Patent Publication Number: US-11662235-B2

Title: Air data probe with enhanced conduction integrated heater bore and features

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application is related to U.S. application Ser. No. 17/492,319, entitled AIR DATA PROBE WITH INTEGRATED HEATER BORE AND FEATURES, filed concurrently, which is incorporated by reference in its entirety. 
     BACKGROUND 
     The present disclosure relates generally to air data probes, and in particular, to heaters for air data probes. 
     Air data probes are installed on aircraft to measure air data parameters. Air data parameters may include barometric static pressure, altitude, air speed, angle of attack, angle of sideslip, temperature, total air temperature, relative humidity, and/or any other parameter of interest. Examples of air data probes include pitot probes, total air temperature probes, or angle of attack sensors. 
     Air data probes are mounted to an exterior of an aircraft in order to gain exposure to external airflow. Thus, air data probes are exposed to the environmental conditions exterior to the aircraft, which are often cold. As such, heaters are positioned within air data probes to ensure the air data probes function properly in liquid water, ice crystal, and mixed phase icing conditions. It can be difficult to successfully arrange the heater within the air data probe. 
     SUMMARY 
     A probe head of an air data probe includes a body extending from a first end to a second end of the probe head and a rod heater. The body includes an inlet adjacent the first end of the probe head, an air passageway extending through the body from the inlet to a second end of the probe head, a water dam extending radially through the body such that the air passageway is redirected around the water dam, a heater bore extending within the body, and an enhanced conduction area between heater bore and an exterior surface of the probe head. The inlet, the air passageway, the water dam, and the heater bore are all unitary to the body. The rod heater is positioned within the heater bore. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view of an air data probe. 
         FIG.  2 A  is a partial perspective view of a probe head of the air data probe. 
         FIG.  2 B  is a cut away view of a probe head of the air data probe. 
         FIG.  2 C  is a cross-sectional view of the probe head of the air data probe. 
         FIG.  2 D  is a cross-sectional view of the probe head of the air data probe. 
         FIG.  2 E  is a cross-sectional view of the probe head of the air data probe. 
         FIG.  2 F  is a front view of the probe head of the air data probe. 
         FIG.  3 A  is a partial perspective view of a second embodiment of a probe head. 
         FIG.  3 B  is a cut away view of a second embodiment of the probe head. 
         FIG.  3 C  is a cross-sectional view of the second embodiment of the probe head. 
         FIG.  3 D  is a cross-sectional view of the second embodiment of the probe head. 
         FIG.  3 E  is an end view of the second embodiment of the probe head. 
         FIG.  4 A  is a perspective top view of the air data probe showing enhanced conduction areas of a third embodiment of the probe head. 
         FIG.  4 B  is a partial perspective front view of the third embodiment of the probe head showing the enhanced conduction areas. 
         FIG.  4 C  is a partial perspective front view of the third embodiment of the probe head with part of the body of the probe head removed to show the enhanced conduction areas. 
         FIG.  4 D  is a cross-sectional view of the third embodiment of the probe head taken along line D-D of  FIG.  4 A . 
         FIG.  4 E  is a cross-sectional view of the third embodiment of the probe head taken along line E-E of  FIG.  4 A . 
         FIG.  5 A  is a perspective top view of the air data probe showing an enhanced conduction area of the fourth embodiment of the probe head. 
         FIG.  5 B  is a partial perspective front view of the fourth embodiment of the probe head showing the enhanced conduction area. 
         FIG.  5 C  is a partial perspective front view of the fourth embodiment of the probe head with part of the body of the probe head removed to show the enhanced conduction area. 
         FIG.  5 D  is a cross-sectional view of the fourth embodiment of the probe head taken along line D-D of  FIG.  5 A . 
         FIG.  5 E  is a cross-sectional view of the fourth embodiment of the probe head taken along line E-E of  FIG.  5 A . 
     
    
    
     DETAILED DESCRIPTION 
     In general, the present disclosure describes an air data probe with a probe head that has an additively manufactured body including unitary water dams, air passageways, and one or more heater bores for a rod heater or heaters, resulting in simplified assembly, enhanced repeatability, and efficient heat distribution. The probe head may also include one or more enhanced conduction areas between or extending from one or more heater bores and an exterior surface of the body to increase and further tailor the heat distribution. 
       FIG.  1    is a perspective view of air data probe  10 . Air data probe  10  includes probe head  12 , strut  14 , and mounting flange  16 . Probe head  12  includes first end  18  and second end  20 . 
     Air data probe  10  may be a pitot probe, a pitot-static probe, or any other suitable air data probe. Probe head  12  is the sensing head of air data probe  10 . Probe head  12  is a forward portion of air data probe  10 . Probe head  12  has one or more ports positioned in probe head  12 . Internal components of air data probe  10  are located within probe head  12 . Probe head  12  is connected to a first end of strut  14 . Strut  14  is blade-shaped. Internal components of air data probe  10  are located within strut  14 . Strut  14  is adjacent mounting flange  16 . A second end of strut  14  is connected to mounting flange  16 . Mounting flange  16  makes up a mount of air data probe  10 . Mounting flange  16  is connectable to an aircraft. 
     Probe head  12  has first end  18  at one end, or an upstream end, and second end  20  at an opposite end, or a downstream end. First end  18  of probe head  12  makes up a tip of probe head  12 . Second end  20  of probe head  12  is connected to strut  14 . 
     Air data probe  10  is configured to be installed on an aircraft. Air data probe  10  may be mounted to a fuselage of the aircraft via mounting flange  16  and fasteners, such as screws or bolts. Strut  14  holds probe head  12  away from the fuselage of the aircraft to expose probe head  12  to external airflow. Probe head  12  takes in air from surrounding external airflow and communicates air pressures pneumatically through internal components and passages of probe head  12  and strut  14 . Pressure measurements are communicated to a flight computer and can be used to generate air data parameters related to the aircraft flight condition. 
       FIG.  2 A  is a partial perspective view of probe head  12  of air data probe  10 .  FIG.  2 B  is a cut away view of probe head  12  of air data probe  10 .  FIG.  2 C  is a cross-sectional view of probe head  12  of air data probe  10 .  FIG.  2 D  is a cross-sectional view of probe head  12  of air data probe  10 .  FIG.  2 E  is a cross-sectional view of probe head  12  of air data probe  10 .  FIG.  2 F  is a front view of probe head  12  of air data probe  10 .  FIGS.  2 A,  2 B,  2 C,  2 D,  2 E, and  2 F  will be discussed together. Air data probe  10  includes probe head  12 . Probe head  12  includes first end  18 , second end  20 , body  22 , and heater  24 . Body  22  includes exterior surface  26 , inlets  28 A,  28 B,  28 C, and  28 D, air passageways  30 A,  30 B,  30 C, and  30 D, water dams  32 A and  32 B, and heater bore  34 . Heater bore  34  includes interior surface  36 . 
     Probe head  12  has first end  18  making up the tip of probe head  12 . Second end  20  is opposite first end  18 . Second end  20  of probe head  12  is connected to strut  14  (shown in  FIG.  1   ). Body  22  of probe head  12  extends from first end  18  to second end  20 . Body  22  is a unitary, or single-piece, structure. Body  22  is additively manufactured and made of nickel or any other suitable material. Heater  24  is positioned within body  22 . In this embodiment, a single heater  24  extends through a center, or down the middle, of body  22 . Heater  24  is a rod heater, which includes both rod and rod-like structures. Heater  24  may be comprised of an electric resistive wire heater helically wound around a ceramic rod-like core. Heater  24  may be tailored such that heater  24  has a varying amount of power, or different amounts of power axially along heater  24 . For example, electric resistive wire may be wound to result in tighter or looser coils on ceramic core to increase or decrease the amount of coils, and thus the power density along heater  24 . Heater  24  may have more tightly wound coils at an end of heater  24  adjacent first end  18  of probe head  12  to deliver a greater amount of heat to the tip. Alternatively, heater  24  may be uniform such that the power density of heater  24  is uniform axially along heater  24 . 
     Exterior surface  26  of body  22  is an outer surface of body  22 . Exterior surface  26  of body  22  is the outer surface of probe head  12 . As such, external airflow contacts exterior surface  26 . Body  22  has inlets  28 A,  28 B,  28 C, and  28 D near first end  18  of probe head  12 . Inlets  28 A,  28 B,  28 C, and  28 D are openings in body  22 . In this embodiment, body  22  has four inlets  28 A,  28 B,  28 C, and  28 D. In alternate embodiments, body  22  has any suitable number of inlets  28 . Each inlet  28 A,  28 B,  28 C,  28 D is connected to a respective air passageway  30 A,  30 B,  30 C, and  30 D. As such, body  22  has four air passageways  30 A,  30 B,  30 C, and  30 D. Air passageways  30 A,  30 B,  30 C, and  30 D extend from respective inlets  28 A,  28 B,  28 C, and  28 D to second end  20  of probe head  12 . Air passageways  30 A,  30 B,  30 C, and  30 D surround heater  24  such that air passageways  30 A,  30 B,  30 C, and  30 D are between heater  24  and exterior surface  26  of body  22 . Air passageways  30 A,  30 B,  30 C, and  30 D extend in substantially straight lines and twist up to 90 degrees around water dams  32 A and  32 B. As such, air passageways  30 A,  30 B,  30 C, and  30 D may have an undulating geometry from first end  18  to second end  20  such that air passageways  30 A,  30 B,  30 C, and  30 D are redirected around water dams  32 A and  32 B. Water dams  32 A and  32 B are positioned in lines of sight of inlets  28 A,  28 B,  28 C, and  28 D. Water dams  32 A extend radially. In this embodiment, body  22  has two water dams  32 A and  32 B spaced axially from each other. In alternate embodiments, body  22  may have any number of water dams  32 A and  32 B. 
     Heater bore  34  is a cylindrical opening, or well, extending through a center of body  22 . Heater bore  34  is positioned between first end  18  and second end  20 . Heater bore  34  is shaped to accept rod heater  24 . In this embodiment, body  22  has a single heater bore  34  for a single heater  34 . In alternate embodiments, body  22  may have a plurality of heater bores  34  to accommodate a plurality of heaters  34 . Heater bore  34  has annular interior surface  36  that contacts heater  24 . Specifically, heater  24  is slid into heater bore  34  such that heater  24  is in contact with interior surface  36  of heater bore  34 . 
     Heater  24  connects to heater circuitry (not shown) at second end  20  of probe head  12 , the circuitry going down strut  14  (shown in  FIG.  1   ) to connect to and get power from internal components of air data probe  10 . Heater  24  can have different amounts of power along rod heater  24  to distribute more heat or less heat depending on the needs of probe head  12 , or power can be uniform along heater  24  to further simplify manufacturing of heater  24 . 
     Thermal resistance of body  22  varies, particularly from heater  24  to exterior surface  26 , from first end  18  to second end  20  of probe head  12  due to different amounts of material between heater  24  and exterior surface  26  moving axially from first end  18  to second end  20  of probe head  12 . For example, air passageways  30 A,  30 B,  30 C, and  30 D can increase or decrease in diameter to increase or decrease the amount of material between heater bore  34  and exterior surface  26 , varying the thermal resistance of probe head  12  by having more or less metal to carry heat radially outward from heater  24 . Less metal in probe head  12  moving from first end  18  to second end  20  reduces the thermal resistance and results in less heat conduction from heater  24  to exterior surface  26  of probe head  12  moving from first end  18  to second end  20 . As such, probe head  12  is conducting less heat near second end  20  and diverting more heat toward first end  18 , or tip, of probe head  12 . 
     Air passageways  30 A,  30 B,  30 C, and  30 D are not fully linear and twist, or undulate, around heater bore  34  and water dams  32 A and  32 B to result in a line-of-sight deflection from first end  18 . An absence of a straight path from inlets  28 A,  28 B,  28 C, and  28 D, at first end  18 , to second end  20  of probe head  12 , as shown in  FIG.  2 F , assists in managing water that could get into probe head  12 . Water dams  32 A and  32 B redirect, or knock down, water particles in the airflow moving through air passageways  30 A,  30 B,  30 C, and  30 D. Water dams  32 A and  32 B block ice and water particles in exterior airflow and prevent ice and water particles from having a direct route down air passageways  30 A,  30 B,  30 C, and  30 D and through probe head  12 . 
     Traditional air data probes have a wire heater brazed to a body of a probe head. Other components, such as water dams, may also be positioned within and brazed onto traditional probe heads. As such, probe heads of traditional air data probes have complex heaters incorporated into multi-piece assemblies. 
     Additive manufacturing allows for more complex internal geometry, including air passageways  30 A,  30 B,  30 C, and  30 D, water dams  32 A and  32 B, and heater bore  34 , of probe head  12 , which is needed for optimal functionality of air data probe  10 . Because body  22  is a single unitary piece, air passageways  30 A,  30 B,  30 C, and  30 D, water dams  32 A and  32 B, and heater bore  34  are uniform in size, shape, and position among probe heads  12  to ensure optimal fit and performance as well as repeatability. For example, heater bore  34 , water dams  32 A and  32 B, and air passageways  30 A,  30 B,  30 C, and  30 D are combined with rod heater  24  and body  22  ensures the best fit between heater  24  and body  22 . Additively manufactured body  22  of probe head  12  allows for easier and more effective use of rod-shaped heater  24 . 
     Rod heater  24  is simpler than a traditional complex heater brazed into a probe head. Because the power density of rod heater  24  can change axially along heater  24 , heater  24  still maintains the ability to tailor heat distribution within probe head  12  by enhancing conduction to the portions of probe head  12  that need heat via varied power density of heater  24 . Rod heater  24  can be a standardized heater among probe heads  12 . Heater  24  is also easier to manufacture and simplifies the assembly process of probe head  12 . 
     The geometry of air passageways  30 A,  30 B,  30 C, and  30 D allows air passageways  30 A,  30 B,  30 C, and  30 D to twist around water dams  32 A and  32 B positioned in their direct path from first end  18 . Water dams  32 A and  32 B prevent ice and water particles from external airflow from moving through probe head  12  and decreasing functionality of air data probe  10 . 
     Utilizing additive manufacturing to create more complex internal geometry of body  22 , which has a complex one-piece shape that includes air passageways  30 A,  30 B,  30 C, and  30 D, water dams  32 A and  32 B, and heater bore  34 , and integrating a simpler form of a heater via rod heater  24  achieves the internal shapes and passages needed for optimal functionality of probe head  12  while enhancing heat conduction and simplifying manufacturing and assembly of probe head  12 . 
       FIG.  3 A  is a partial perspective view of probe head  112 .  FIG.  3 B  is a cut away view of probe head  112 .  FIG.  3 C  is a cross-sectional view of probe head  112 .  FIG.  3 D  is a cross-sectional view of probe head  112 .  FIG.  3 E  is an end view of probe head  112 .  FIGS.  3 A,  3 B,  3 C,  3 D, and  3 E  will be discussed together. Probe head  112  includes first end  118 , second end  120 , body  122 , and heaters  124 A and  124 B. Body  122  includes exterior surface  126 , inlet  128 , air passageway  130 , water dam  132 , and heater bores  134 A and  134 B. Heater bore  134 A includes interior surface  136 A. Heater bore  134 B includes interior surface  136 B. 
     Probe head  112  has first end  118  making up the tip of probe head  112 . Second end  120  is opposite first end  118 . Second end  120  of probe head  112  is connected to strut  14  (shown in  FIG.  1   ). Body  122  of probe head  112  extends from first end  118  to second end  120 . Body  122  is a unitary, or single-piece, structure. Body  122  is additively manufactured and made of nickel or any other suitable material. Heaters  124 A and  124 B are positioned within body  122 . In this embodiment, probe head  112  has two side-by-side heaters  124 A and  124 B. Heaters  124 A and  124 B are spaced radially from each other. As such, heaters  124 A and  124 B are positioned adjacent exterior surface  126  of body  126 . Heaters  124 A and  124 B are rod heaters, which includes both rod and rod-like structures. Each heater  124 A,  124 B may be comprised of an electric resistive wire heater helically wound around a ceramic rod-like core. Each heater  124 A,  124 B may be tailored such that heater  124 A,  124 B has different amounts of power along heater  124 A,  124 B. For example, electric resistive wire may be wound to result in tighter or looser coils on ceramic core to increase or decrease the amount of coils, and thus the power density along heater  124 A,  124 B. Heater  124 A,  124 B may have more tightly wound coils at an end of heater  124 A,  124 B adjacent first end  118  of probe head  112  to deliver a greater amount of heat to the tip. Alternatively, heater  124 A,  124 B may be uniform such that the power density of heater  124 A,  124 B is uniform along heater  124 A,  124 B. 
     Exterior surface  126  of body  122  is an outer surface of body  122 . Exterior surface  126  of body  122  is the outer surface of probe head  112 . As such, external airflow contacts exterior surface  126 . Body  122  has inlet  128  near first end  118  of probe head  112 . Inlet  128 A is an opening in body  122 . In this embodiment, body  122  has a single inlet  128 A. Inlet  128  is connected to air passageway  130 . As such, body  122  has a single air passageway  130 . Air passageway  130  extends from inlets  128  to second end  120  of probe head  112 . Air passageway  130  extends through a center, or down the middle, of body  122 . A majority of air passageway  130  extends between heaters  124 A and  124 B such that heaters  124 A and  124 B are between a majority of air passageway  130  and exterior surface  126  of body  122 . Air passageway  130  extends in a substantially straight line and twists up to 90 degrees around water dam  132 . As such, air passageway  130  may have an undulating geometry from first end  118  to second end  120  such that air passageway  130  is redirected around water dam  132 . Water dam  132  is positioned in the line of sight of inlet  128 . Water dam  132  extends radially. In this embodiment, body  122  has a single water dam  132 . 
     Each heater  124 A,  124 B is positioned within a heater bore  134 A,  134 B. Heater bores  134 A and  134 B are cylindrical openings, or wells, extending along body  122  adjacent exterior surface  126 . Heater bores  134 A and  134 B are positioned between first end  118  and second end  120 . Heater bores  134 A and  134 B are not aligned. Rather, heater bores  134 A and  134 B are uniformly offset from exterior surface  126  of probe head  112 , which is slightly tapered. Each heater bore  134 A,  134 B is shaped to accept a respective rod heater  124 A,  124 B. In this embodiment, body  122  has two heater bores  134 A and  134 B to accommodate two heaters  134 A and  134 B. In alternate embodiments, probe head  112  may have one or more than two heaters  124 A and  124 B, each heater  124 A,  124 B positioned within a respective heater bore  134 A,  134 B. Each heater bore  134 A,  134 B has annular interior surface  136 A,  136 B that contacts respective heater  124 A,  124 B. Each heater  124 A,  124 B is slid into a respective heater bore  134 A,  134 B such that each heater  124 A,  124 B is in contact with an interior surface of heater bore  134 A,  134 B. 
     Heaters  124 A and  124 B connect to heater circuitry (not shown) at second end  120  of probe head  112 , the circuitry going down strut  14  (shown in  FIG.  1   ) to connect to and get power from internal components of air data probe  10 . Heaters  124 A and  124 B can have different amounts of power along rod heaters  124 A and  124 B to distribute more heat or less heat depending on the needs of probe head  112 , or power can be uniform along heaters  124 A and  124 B to further simplify manufacturing of heaters  124 A and  124 B. 
     Thermal resistance of body  122  varies, particularly from each heater  124 A,  124 B to exterior surface  126 , from first end  118  to second end  120  of probe head  112  due to different amounts of material between each heater  124 A,  124 B and exterior surface  126  moving axially from first end  118  to second end  120  of probe head  112 . The thermal resistance of probe head  112  can be varied by having more or less metal to carry heat radially outward from heaters  124 A and  124 B. Less metal in probe head  112  moving from first end  118  to second end  120  reduces the thermal resistance and results in less heat conduction from heaters  124 A and  124 B to exterior surface  126  of probe head  112  moving from first end  118  to second end  120 . As such, probe head  112  may conduct less heat near second end  120  and divert more heat toward first end  118 , or tip, of probe head  112 . 
     Air passageway  130  is not fully linear and twists, or undulates, around heater bores  134 A and  134 B and water dam  132  to result in a line-of-sight deflection from first end  118 . An absence of a straight path from inlet  128  at first end  118  to second end  120  of probe head  112 , as shown in  FIG.  3 E , assists in managing water that could get into probe head  112 . Water dam  132  redirects, or knocks down, water particles in the airflow moving through air passageway  130 . Water dam  132  blocks ice and water particles in exterior airflow and prevents ice and water particles from having a direct route down air passageway  130  and through probe head  112 . 
     Additive manufacturing allows for more complex internal geometry, including air passageway  130 , water dam  132 , and heater bores  134 A and  134 B, of probe head  112 , which is needed for optimal functionality of air data probe  10 . For example, probe head  112  is able to have two heater bores  134 A and  134 B, positioned exactly where needed, as well as the required internal geometry of air passageway  130  and water dam  132  that probe head  112  requires in order to function properly due to additively manufacturing probe head  112 . Because body  122  is a single unitary piece, air passageway  130 , water dam  132 , and heater bores  134 A and  134 B are uniform in size, shape, and position among probe heads  112  to ensure optimal fit and performance as well as repeatability. For example, heater bores  134 A and  134 B, water dam  132 , and air passageway  130  are combined with rod heaters  124 A and  124 B and body  122  ensures the best fit between heaters  124 A and  124 A and  124 B and body  122 . Additively manufactured body  122  of probe head  112  allows for easier and more effective use of rod-shaped heaters  124 A and  124 B. 
     Additive manufacturing allows for two heaters  124 A and  124 B, positioned side-by-side, to increase the heating ability of probe head  112  compared to probe head  12  that has a single heater  24 , as shown in  FIGS.  2 A- 2 F , when more heat is required. Probe head  112  can respond to increased heat demands. Heater bores  134 A and  134 B are additively manufactured exactly where heat is needed such that heaters  124 A and  124 B provide enough heat within probe head  112 . Further, water dam  132  and air passageway  130  are additively manufactured and shaped differently to accommodate multiple heater bores  134 A and  134 B. The geometry of air passageway  130  allows air passageway  130  to twist around water dams  132  positioned in its direct path from first end  118 . Water dam  132  prevents ice and water particles from external airflow from moving through probe head  112  and decreasing functionality of air data probe  110 . 
     Rod heaters  124 A and  124 B are simpler than a traditional complex heater brazed into a probe head. Because the power density of rod heaters  124 A and  124 B can change axially along heaters  124 A and  124 B, heaters  124 A and  124 B still maintain the ability to tailor heat distribution within probe head  112  by enhancing conduction to the portions of probe head  112  that need heat via varied power density of heaters  124 A and  124 B. Rod heaters  124 A and  124 B can be standardized heaters among probe heads  112 . Heaters  124 A and  124 B are also easier to manufacture and simplify the assembly process of probe head  112 . 
     Utilizing additive manufacturing to create more complex internal geometry of body  122 , which has a complex one-piece shape that includes air passageway  130 , water dams  132 , and heater bores  134 A and  134 B, and integrating a simpler form of heaters via rod heaters  124 A and  124 B achieves the internal shapes and passages needed for optimal functionality of probe head  112  while enhancing heat conduction and simplifying manufacturing and assembly of probe head  112 . 
       FIG.  4 A  is a perspective top view of air data probe  210  showing enhanced conduction areas  238  of probe head  212 .  FIG.  4 B  is a partial perspective front view of probe head  212  showing enhanced conduction areas  238 A,  238 B,  238 C, and  238 D.  FIG.  4 C  is a partial perspective front view of probe head  212  with part of body  222  of probe head  212  removed to show enhanced conduction areas  238 A,  238 B,  238 C, and  238 D.  FIG.  4 D  is a cross-sectional view of probe head  212  taken along line D-D of  FIG.  4 A .  FIG.  4 E  is a cross-sectional view of probe head  212  taken along line E-E of  FIG.  4 A .  FIGS.  4 A,  4 B,  4 C,  4 D, and  4 E  will be discussed together. Air data probe  210  includes probe head  212 , strut  214 , and mounting flange  216 . Probe head  212  includes first end  218 , second end  220 , body  222 , and heater  224 . Body  222  includes exterior surface  226 , inlets  228 A,  228 B,  228 C, and  228 D, air passageways  230 A,  230 B,  230 C, and  230 D, water dams  232 A and  232 B, heater bore  234  (including interior surface  236 ), and enhanced conduction areas  238 A,  238 B,  238 C, and  238 D. 
     Probe head  212  has first end  218  making up the tip of probe head  212 . Second end  220  is opposite first end  218 . Second end  220  of probe head  212  is connected to strut  214 . Body  222  of probe head  212  extends from first end  218  to second end  220 . Body  222  may be a unitary, or single-piece, structure. Body  222  is additively manufactured and made of nickel or any other suitable material. Heater  224  is positioned within body  222 . In this embodiment, a single heater  224  extends through a center, or down the middle, of body  222 . Heater  224  is a rod heater, which includes both rod and rod-like structures. Heater  224  may be comprised of an electric resistive wire heater helically wound around a ceramic rod-like core. Heater  224  may be tailored such that heater  224  has different amounts of power along heater  224 . For example, electric resistive wire may be wound to result in tighter or looser coils on ceramic core to increase or decrease the amount of coils, and thus the power density along heater  224 . Heater  224  may have more tightly wound coils at an end of heater  224  adjacent first end  218  of probe head  212  to deliver a greater amount of heat to the tip. Alternatively, heater  224  may be uniform such that the power density of heater  224  is uniform along heater  224 . 
     Exterior surface  226  of body  222  is an outer surface of body  222 . Exterior surface  226  of body  222  is the outer surface of probe head  212 . As such, external airflow contacts exterior surface  226 . Body  222  has inlets  228 A,  228 B,  228 C, and  228 D near first end  218  of probe head  212 . Inlets  228 A,  228 B,  228 C, and  228 D are openings in body  222 . In this embodiment, body  222  has four inlets  228 A,  228 B,  228 C, and  228 D. In alternate embodiments, body  222  has any suitable number of inlets  228 . Each inlet  228 A,  228 B,  2228 C,  28 D is connected to a respective air passageway  230 A,  230 B,  230 C, and  230 D. As such, body  222  has four air passageways  230 A,  230 B,  230 C, and  230 D. Air passageways  230 A,  230 B,  230 C, and  230 D extend from respective inlets  228 A,  228 B,  228 C, and  228 D to second end  220  of probe head  212 . Air passageways  230 A,  230 B,  230 C, and  230 D surround heater  224  such that air passageways  230 A,  230 B,  230 C, and  230 D are between heater  224  and exterior surface  226  of body  222 . Air passageways  230 A,  230 B,  230 C, and  230 D extend in substantially straight lines and twist up to 90 degrees around water dams  232 A and  232 B. As such, air passageways  230 A,  230 B,  230 C, and  230 D may have an undulating geometry from first end  218  to second end  220  such that air passageways  230 A,  230 B,  230 C, and  230 D are redirected around water dams  232 A and  232 B. Water dams  232 A and  232 B are positioned in lines of sight of inlets  228 A,  228 B,  228 C, and  228 D. Water dams  232 A extend radially. In this embodiment, body  222  has two water dams  232 A and  232 B spaced axially from each other. In alternate embodiments, body  222  may have any number of water dams  232 A and  232 B. 
     Heater bore  234  is a cylindrical opening, or well, extending through a center of body  222 . Heater bore  234  is positioned between first end  218  and second end  220 . Heater bore  234  is shaped to accept rod heater  224 . In this embodiment, body  222  has a single heater bore  234  for a single heater  234 . In alternate embodiments, body  222  may have a plurality of heater bores  234  to accommodate a plurality of heaters  234 . Heater bore  234  has annular interior surface  236  that contacts heater  224 . Specifically, heater  224  is slid into heater bore  234  such that heater  224  is in contact with interior surface  236  of heater bore  234 . Exterior surface  226 , inlets  228 A,  228 B,  228 C, and  228 D, air passageways  230 A,  230 B,  230 C, and  230 D, water dams  232 A and  232 B, and heater bore  234  are all unitary to body  222 , forming a single-piece structure. 
     Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D are between heater bore  234  and exterior surface  226  of probe head  212 . Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D are areas of enhanced thermal conduction. Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D fill spaces in body  222  between internal components including air passageways  230 A,  230 B,  230 C, and  230 D, water dams  232 A and  232 B, and heater bore  234 . Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D are as large as possible, filling areas between internal components of body  222  while maintaining a uniform minimum wall thickness (such as about 25 thousandths of an inch) of, or offset from, internal components and exterior surface  226 . Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D are comprised of material having a higher thermal conductivity than the material forming the rest of body  222 . For example, enhanced conduction areas  238 A,  238 B,  238 C, and  238 D may be a silver-copper alloy, which has heat conductivity about 3.5 times that of nickel. 
     Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D are created by forming one or more cavities, or pockets, in body  222  during additive manufacturing of body  222  and filling the cavities with material having a higher conductivity than the material forming the rest of body  222 . For example, the cavities may be filled with a silver-copper alloy. The cavities may be filled via multi-material additive manufacturing, via a two-step process by melting in the higher conductivity material in a vacuum furnace process, or via any other suitable process. As such, enhanced conduction areas  238 A,  238 B,  238 C, and  238 D may also be unitary to body  222 . The higher conductivity material may be in the form of a powder, a wire (such as a pelletized wire), or in any other suitable form prior to filling cavities within body  222 . 
     Heater  224  connects to heater circuitry (not shown) at second end  220  of probe head  212 , the circuitry going down strut  214  to connect to and get power from internal components of air data probe  210 . Heater  224  can have different amounts of power along rod heater  224  to distribute more heat or less heat depending on the needs of probe head  212 , or power can be uniform along heater  224  to further simplify manufacturing of heater  224 . 
     Thermal resistance of body  222  varies, particularly from heater  224  to exterior surface  226 , from first end  218  to second end  220  of probe head  212  due to different amounts of material between heater  224  and exterior surface  226  moving axially from first end  218  to second end  220  of probe head  212 . For example, air passageways  230 A,  230 B,  230 C, and  230 D can increase or decrease in diameter to increase or decrease the amount of material between heater bore  234  and exterior surface  226 , varying the thermal resistance of probe head  212  by having more or less metal to carry heat radially outward from heater  224 . Less metal in probe head  212  moving from first end  218  to second end  220  reduces the thermal resistance and results in less heat conduction from heater  224  to exterior surface  226  of probe head  212  moving from first end  218  to second end  220 . As such, probe head  212  is conducting less heat near second end  220  and diverting more heat toward first end  218 , or tip, of probe head  212 . Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D maximize heat conduction by filling the space between internal components of body  222  while maintaining a uniform offset from, or wall thickness of, internal components and exterior surface  226  needed for the functionality of probe head  212 . As such, enhanced conduction areas  238 A,  238 B,  238 C, and  238 D may also increase or decrease in size moving axially from first end  218  to second end  220  of probe head  212 . For example, enhanced conduction areas  238 A,  238 B,  238 C, and  238 D may be larger near tip, or first end  218 , of probe head  212 , resulting in higher thermal conductivity and greater heat conduction to first end  218 . 
     Air passageways  230 A,  230 B,  230 C, and  230 D are not fully linear and twist, or undulate, around heater bore  234  and water dams  232 A and  232 B to result in a line-of-sight deflection from first end  218 . An absence of a straight path from inlets  228 A,  228 B,  228 C, and  228 D, at first end  218 , to second end  220  of probe head  212 , as shown in  FIG.  4 D , assists in managing water that could get into probe head  212 . Water dams  232 A and  232 B redirect, or knock down, water particles in the airflow moving through air passageways  230 A,  230 B,  230 C, and  230 D. Water dams  232 A and  232 B block ice and water particles in exterior airflow and prevent ice and water particles from having a direct route down air passageways  230 A,  230 B,  230 C, and  230 D and through probe head  212 . 
     Traditional air data probes have a wire heater brazed to a body of a probe head. Other components, such as water dams, may also be positioned within and brazed onto traditional probe heads. As such, probe heads of traditional air data probes have complex heaters incorporated into multi-piece assemblies. Additionally, probe head bodies are typically formed of a single material. 
     Additive manufacturing allows for more complex internal geometry, including air passageways  230 A,  230 B,  230 C, and  230 D, water dams  232 A and  232 B, heater bore  234 , and enhanced conduction areas  238 A,  238 B,  238 C, and  238 D of probe head  212 , which contribute to optimal functionality of air data probe  210 . Because exterior surface  226 , inlets  228 A,  228 B,  228 C, and  228 D, air passageways  230 A,  230 B,  230 C, and  230 D, water dams  232 A and  232 B, heater bore  234  of body  222  form a single unitary piece, air passageways  230 A,  230 B,  230 C, and  230 D, water dams  232 A and  232 B, and heater bore  234  are uniform in size, shape, and position among probe heads  212  to ensure optimal fit and performance as well as repeatability. For example, heater bore  234 , water dams  232 A and  232 B, and air passageways  230 A,  230 B,  230 C, and  230 D are combined with rod heater  224  and body  222  ensures the best fit between heater  224  and body  222 . Further, enhanced conduction areas  238 A,  238 B,  238 C, and  238 D formed via multi-material additive manufacturing are uniform among probe heads  212 , also ensuring optimal performance and repeatability. Additively manufactured body  222  of probe head  212  allows for easier and more effective use of rod-shaped heater  224  and enhanced conduction areas  238 A,  238 B,  238 C, and  238 D. 
     Rod heater  224  is simpler than a traditional complex heater brazed into a probe head. Because the power density of rod heater  224  can change axially along heater  224 , heater  224  still maintains the ability to tailor heat distribution within probe head  212  by enhancing conduction to the portions of probe head  212  that need heat via varied power density of heater  224 . Rod heater  224  can be a standardized heater among probe heads  212 . Heater  224  is also easier to manufacture and simplifies the assembly process of probe head  212 . Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D are also integrated into body  222  to further tailor heat distribution within probe head  212 . Enhanced conduction areas  238 A,  238 B,  238 C, and  238 D allow for more heat conduction toward first end  218 , or tip, of probe head  212  while maintaining a simple manufacture and assembly of probe head  212 . 
     The geometry of air passageways  230 A,  230 B,  230 C, and  230 D allows air passageways  230 A,  230 B,  230 C, and  230 D to twist around water dams  232 A and  232 B positioned in their direct path from first end  218 . Water dams  232 A and  232 B prevent ice and water particles from external airflow from moving through probe head  212  and decreasing functionality of air data probe  210 . 
     Utilizing additive manufacturing to create more complex internal geometry of body  222 , which has a complex one-piece shape that includes air passageways  230 A,  230 B,  230 C, and  230 D, water dams  232 A and  232 B, heater bore  234 , and enhanced conduction areas  238 A,  238 B,  238 C, and  238 D and integrating a simpler form of a heater via rod heater  224  achieves the internal shapes and passages needed for optimal functionality of probe head  212  while enhancing heat conduction and simplifying manufacturing and assembly of probe head  212 . 
       FIG.  5 A  is a perspective top view of air data probe  310  showing enhanced conduction area  338  of probe head  312 .  FIG.  5 B  is a partial perspective front view of probe head  312  showing enhanced conduction area  338 .  FIG.  5 C  is a partial perspective front view of probe head  312  with part of body  322  of probe head  312  removed to show enhanced conduction area  338 .  FIG.  5 D  is a cross-sectional view of probe head  312  taken along line D-D of  FIG.  5 A .  FIG.  5 E  is a cross-sectional view of probe head  312  taken along line E-E of  FIG.  5 A .  FIGS.  5 A,  5 B,  5 C,  5 D, and  5 E  will be discussed together. Air data probe  310  includes probe head  312 , strut  314 , and mounting flange  316 . Probe head  312  includes first end  318 , second end  320 , body  322 , and heaters  324 A and  324 B. Body  326  includes exterior surface  326 , inlet  328 , air passageway  330 , water dam  332 , and heater bores  334 A and  334 B (including interior surface  336 A and interior surface  336 B, respectively) and enhanced conduction area  338 . 
     Probe head  312  has first end  318  making up the tip of probe head  312 . Second end  320  is opposite first end  318 . Second end  320  of probe head  312  is connected to strut  314 . Body  322  of probe head  312  extends from first end  318  to second end  320 . Body  322  may be a unitary, or single-piece, structure. Body  322  is additively manufactured and made of nickel or any other suitable material. Heaters  324 A and  324 B are positioned within body  322 . In this embodiment, probe head  312  has two side-by-side heaters  324 A and  324 B. Heaters  324 A and  324 B are spaced radially from each other. As such, heaters  324 A and  324 B are positioned adjacent exterior surface  326  of body  326 . Heaters  324 A and  324 B are rod heaters, which includes both rod and rod-like structures. Each heater  324 A,  324 B may be comprised of an electric resistive wire heater helically wound around a ceramic rod-like core. Each heater  324 A,  324 B may be tailored such that heater  324 A,  324 B has different amounts of power along heater  324 A,  324 B. For example, electric resistive wire may be wound to result in tighter or looser coils on ceramic core to increase or decrease the amount of coils, and thus the power density along heater  324 A,  324 B. Heater  324 A,  324 B may have more tightly wound coils at an end of heater  324 A,  324 B adjacent first end  318  of probe head  312  to deliver a greater amount of heat to the tip. Alternatively, heater  324 A,  324 B may be uniform such that the power density of heater  324 A,  324 B is uniform along heater  324 A,  324 B. 
     Exterior surface  326  of body  322  is an outer surface of body  322 . Exterior surface  326  of body  322  is the outer surface of probe head  312 . As such, external airflow contacts exterior surface  326 . Body  322  has inlet  328  near first end  318  of probe head  312 . Inlet  328 A is an opening in body  322 . In this embodiment, body  322  has a single inlet  328 A. Inlet  328  is connected to air passageway  330 . As such, body  322  has a single air passageway  330 . Air passageway  330  extends from inlets  328  to second end  320  of probe head  312 . Air passageway  330  extends through a center, or down the middle, of body  322 . A majority of air passageway  330  extends between heaters  324 A and  324 B such that heaters  324 A and  324 B are between a majority of air passageway  330  and exterior surface  326  of body  322 . Air passageway  330  extends in a substantially straight line and twists up to 90 degrees around water dam  332 . As such, air passageway  330  may have an undulating geometry from first end  318  to second end  320  such that air passageway  330  is redirected around water dam  332 . Water dam  332  is positioned in the line of sight of inlet  328 . Water dam  332  extends radially. In this embodiment, body  322  has a single water dam  332 . 
     Each heater  324 A,  324 B is positioned within a heater bore  334 A,  334 B. Heater bores  334 A and  334 B are cylindrical openings, or wells, extending along body  322  adjacent exterior surface  326 . Heater bores  334 A and  334 B are positioned between first end  318  and second end  320 . Heater bores  334 A and  334 B are not aligned. Rather, heater bores  334 A and  334 B are offset from exterior surface  326  of probe head  312 , which is slightly tapered. Each heater bore  334 A,  334 B is shaped to accept a respective rod heater  324 A,  324 B. In this embodiment, body  322  has two heater bores  334 A and  334 B to accommodate two heaters  334 A and  334 B. In alternate embodiments, probe head  312  may have one or more than two heaters  324 A and  324 B, each heater  324 A,  324 B positioned within a respective heater bore  334 A,  334 B. Each heater bore  334 A,  334 B has annular interior surface  336 A,  336 B that contacts respective heater  324 A,  324 B. Each heater  324 A,  324 B is slid into a respective heater bore  334 A,  334 B such that each heater  324 A,  324 B is in contact with an interior surface of heater bore  334 A,  334 B. Exterior surface  326 , inlets  328 , air passageway  330 , water dam  332 , and heater bores  334 A and  334 B are all unitary to body  322 , forming a single-piece structure. 
     Enhanced conduction area  338  is between heater bores  334 A and  334  and exterior surface  326  of probe head  312 . Enhanced conduction area  338  is an area of enhanced thermal conduction. Enhanced conduction area  338  surrounds inlet  328 , air passageway  330 , and water dam  232 . Enhanced conduction area  338  fills space in body  322  between internal components. Enhanced conduction area  338  is as large as possible in a portion of body  322  adjacent first end  318 , filling areas between internal components of body  322  while maintaining a uniform minimum wall thickness (such as about 25 thousandths of an inch) of, or offset from, internal components and exterior surface  326 . In this embodiment, enhanced conduction area  338  does not extend to second end  320 . Enhanced conduction area  338  is comprised of material having a higher thermal conductivity than the material forming the rest of body  322 . For example, enhanced conduction area  338  may be a silver-copper alloy, which has a heat conductivity about 3.5 times that of nickel. 
     Enhanced conduction area  338  is created by forming a cavity, or pocket, in body  322  during additive manufacturing of body  322  and filling the cavity with material having a higher conductivity than the material forming the rest of body  322 . For example, the cavity may be filled with a silver-copper alloy. The cavities may be filled via multi-material additive manufacturing, via a two-step process by melting in the higher conductivity material in a vacuum furnace process, or via any other suitable process. As such, enhanced conduction area  338  may also be unitary to body  322 . The higher conductivity material may be in the form of a powder, a wire (such as a pelletized wire), or in any other suitable form prior to filling cavities within body  322 . 
     Heaters  324 A and  324 B connect to heater circuitry (not shown) at second end  320  of probe head  312 , the circuitry going down strut  314  to connect to and get power from internal components of air data probe  310 . Heaters  324 A and  324 B can have different amounts of power along rod heaters  324 A and  324 B to distribute more heat or less heat depending on the needs of probe head  312 , or power can be uniform along heaters  324 A and  324 B to further simplify manufacturing of heaters  324 A and  324 B. 
     Thermal resistance of body  322  varies, particularly from each heater  324 A,  324 B to exterior surface  326 , from first end  318  to second end  320  of probe head  312  due to different amounts of material between each heater  324 A,  324 B and exterior surface  326  moving axially from first end  318  to second end  320  of probe head  312 . The thermal resistance of probe head  312  can be varied by having more or less metal to carry heat radially outward from heaters  324 A and  324 B. Less metal in probe head  312  moving from first end  318  to second end  320  reduces the thermal resistance and results in less heat conduction from heaters  324 A and  324 B to exterior surface  326  of probe head  312  moving from first end  318  to second end  320 . As such, probe head  312  may conduct less heat near second end  320  and divert more heat toward first end  318 , or tip, of probe head  312 . Enhanced conduction area  238  maximizes heat conduction, particularly near first end  318 , by filling the space between internal components of body  322  in a front portion of body  322  near first end  318  while maintaining a uniform offset from, or wall thickness of, internal components and exterior surface  326  needed for the functionality of probe head  312 . As such, enhanced conduction area  338  may also increase or decrease in size moving axially away from first end  318  toward second end  320  of probe head  312 . For example, enhanced conduction area  338  may be larger near tip, or first end  318 , of probe head  312 , resulting in higher thermal conductivity and greater heat conduction to first end  318 . Enhanced conduction area  338  is also fully annular closer to, or adjacent, first end  318 , resulting in greater heat conduction to tip, or first end  318 . 
     Air passageway  330  is not fully linear and twists, or undulates, around heater bores  334 A and  334 B and water dam  332  to result in a line-of-sight deflection from first end  318 . An absence of a straight path from inlet  328  at first end  318  to second end  320  of probe head  312 , as shown in  FIG.  5 D , assists in managing water that could get into probe head  312 . Water dam  332  redirects, or knocks down, water particles in the airflow moving through air passageway  330 . Water dam  332  blocks ice and water particles in exterior airflow and prevents ice and water particles from having a direct route down air passageway  330  and through probe head  312 . 
     Additive manufacturing allows for more complex internal geometry, including air passageway  330 , water dam  332 , heater bores  334 A and  334 B, and enhanced conduction area  338  of probe head  312 , which contribute to optimal functionality of air data probe  310 . For example, probe head  312  is able to have two heater bores  334 A and  334 B, positioned exactly where needed, and enhanced conduction area  238  as well as the required internal geometry of air passageway  330  and water dam  332  that probe head  312  requires in order to function properly due to additively manufacturing probe head  312 . Because exterior surface  326 , inlets  328 , air passageway  330 , water dam  332 , heater bores  334 A and  334 B of body  322  form a single unitary piece, air passageway  330 , water dam  332 , and heater bores  334 A and  334 B are uniform in size, shape, and position among probe heads  312  to ensure optimal fit and performance as well as repeatability. For example, heater bores  334 A and  334 B, water dam  332 , and air passageway  330  are combined with rod heaters  324 A and  324 B and body  322  ensures the best fit between heaters  324 A and  324 A and  324 B and body  322 . Further, enhanced conduction area  238  formed via multi-material additive manufacturing is uniform among probe heads  312 , also ensuring optimal performance and repeatability. Additively manufactured body  322  of probe head  312  allows for easier and more effective use of rod-shaped heaters  324 A and  324 B and enhanced conduction area  338 . 
     Additive manufacturing allows for two heaters  324 A and  324 B, positioned side-by-side, to increase the heating ability of probe head  312  compared to probe head  12  that has a single heater  24 , as shown in  FIGS.  2 A- 2 F , when more heat is required. Probe head  312  can respond to increased heat demands. Heater bores  334 A and  334 B are additively manufactured exactly where heat is needed such that heaters  324 A and  324 B provide enough heat within probe head  312 . Further, water dam  332 , air passageway  330 , and enhanced conduction area  338  are additively manufactured and shaped differently to accommodate multiple heater bores  334 A and  334 B. The geometry of air passageway  330  allows air passageway  330  to twist around water dams  332  positioned in its direct path from first end  318 . Water dam  332  prevents ice and water particles from external airflow from moving through probe head  312  and decreasing functionality of air data probe  310 . A forward end of enhanced conduction area  338  is forward of heaters  324 A and  324 B in order to provide increased heat distribution to first end  318 , which is subject to most extreme icing conditions. 
     Rod heaters  324 A and  324 B are simpler than a traditional complex heater brazed into a probe head. Because the power density of rod heaters  324 A and  324 B can change axially along heaters  324 A and  324 B, heaters  324 A and  324 B still maintain the ability to tailor heat distribution within probe head  312  by enhancing conduction to the portions of probe head  312  that need heat via varied power density of heaters  324 A and  324 B. Rod heaters  324 A and  324 B can be standardized heaters among probe heads  312 . Heaters  324 A and  324 B are also easier to manufacture and simplify the assembly process of probe head  312 . Enhanced conduction area  238  is also integrated into body  322  to further tailor heat distribution within probe head  312 . Enhanced conduction area  238  allows for more heat conduction toward first end  318 , or tip, of probe head  312  while maintaining a simple manufacture and assembly of probe head  312 . 
     Utilizing additive manufacturing to create more complex internal geometry of body  322 , which has a complex one-piece shape that includes air passageway  330 , water dams  332 , heater bores  334 A and  334 B, and enhanced conduction area  338  and integrating a simpler form of heaters via rod heaters  324 A and  324 B achieves the internal shapes and passages needed for optimal functionality of probe head  312  while enhancing heat conduction and simplifying manufacturing and assembly of probe head  312 . 
     DISCUSSION OF POSSIBLE EMBODIMENTS 
     The following are non-exclusive descriptions of possible embodiments of the present invention. 
     A probe head of an air data probe includes a body extending from a first end to a second end of the probe head, the body comprising: an inlet adjacent the first end of the probe head; an air passageway extending through the body from the inlet to a second end of the probe head; a water dam extending radially through the body such that the air passageway is redirected around the water dam; a heater bore extending within the body; and an enhanced conduction area between heater bore and an exterior surface of the probe head; wherein the inlet, the air passageway, the water dam, and the heater bore are all unitary to the body; and a rod heater positioned within the heater bore. 
     The probe head of the preceding paragraph can optionally include, additionally and/or alternatively, any one or more of the following features, configurations and/or additional components: 
     The enhanced conduction area is comprised of a material having a higher thermal conductivity than a material forming the inlet, the air passageway, the water dam, and the heater bore of the body. 
     The enhanced conduction area is formed by filling a cavity within the body with a material having a higher conductivity than a material forming the inlet, the air passageway, the water dam, and the heater bore of the body. 
     The material forming the inlet, the air passageway, the water dam, and the heater bore is nickel. 
     The material having a higher conductivity than the material forming the inlet, the air passageway, the water dam, and the heater bore of the body is a silver-copper alloy. 
     The cavity within the body is filled via multi-material additive manufacturing. 
     The cavity within the body is filled by melting the material having a higher conductivity into the cavity after the body is additively manufactured. 
     The body further comprises an exterior surface that is unitary to the inlet, the air passageway, the water dam, and the heater bore of the body. 
     The enhanced conduction area is as large as possible while maintaining a uniform offset from the air passageway, the water dam, the heater bore, and an exterior surface of the body. 
     The uniform offset is about 25 thousandths of an inch. 
     The enhanced conduction area is unitary to the body. 
     The enhanced conduction area does not extend to the second end of the probe head. 
     The enhanced conduction area is fully annular adjacent the first end of the probe head. 
     The body comprises a plurality of enhanced conduction areas. 
     The enhanced conduction area is larger near the first end of the probe head. 
     The body includes a plurality of water dams. 
     The body includes a plurality of air passageways. 
     A plurality of rod heaters and wherein the body includes a plurality of heater bores, each rod heater being positioned in a heater bore. 
     The air passageway undulates around the water dam. 
     The single rod heater extends through a center of the body. 
     While the invention has been described with reference to an exemplary embodiment(s), it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment(s) disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.