*[options] JIALOC location of jet engine *ROUGFC surface roughness factor DEFAULT=.00016in JEALOC *SREF wing area JIEVLOC *CBARR JELLOC *BLREF wingspan JINLTA jet inlet area [aero config] JERAD jet exit radius JEANGL jet exit angle [craft layout] JEVELO jet exit velocity XCG center of gravity location AMBTMP ambient static temp ZCG AMBSTP ambient static pressure XW wing appex location JESTMP jet exit static temp ZW JETOTP jet exit total pressure ALIW wing angle Datcom Output Comments XH horizontal tail location ZH PINF pressure in freestream XV vertical tail location TINF temp in freestram ZV RNNUB ALIH horizontal tail angle VERTUP vertical panel above reference plane (TRUE=DEFUALT) CL_Total • Total Lift Coefficient due to: [body dimension] CLα CL from Basic geometry NX # X locations/segments CLδf CL from Flap deflection X specific x locations CLδe CL from Elevator Deflection R, P, S half-width and/or periphery and /or area at each x CLq CL from Pitch Rate derivative ZU distance to upper body surface CLαdot CL from Angle of Attack Rate derivative ZL distance to lower body surface Cd_Total • Total Drag Coefficient due to: [airfoils] Cdα Cd from Basic geometry NACA speficied Cdδf Cd from Flap deflection User defined (upper and lower surfaces and spefic points or man chord line and thickenss distribution at specific points) Cdδe Cd from Elevator deflection [wing and tail specs] need for wing, h tail, and v tail Cy_Total • Total Side Force Coefficient due to: CHRDTP chord at wing tip Cnβ Cy from Sideslip CHRDR chord at wind root Cnp Cy from Roll Rate
derivative SSPNE semispan exposed panel length Cnr Cy from Yaw Rate derivative SSPN theoretical semispan exposed panel length Cm_Total • Total Pitching Moment Coefficient due to: SAVSI inboard sweep angle Cmα Cm from Basic geometry CHSTAT reference chord station (0.25) Cmδf Cm from Flap deflection TWISTA twist angle Cmδe Cm from Elevator deflection DHDADI dihedral angle Cmq Cm from Pitch Rate derivative TYPE wing shape (1=straight tapered, 2=delta,3=cranked) Cmαdot Cm from Angle of Attack Rate derivative Cl_Total • Total Rolling Moment Coefficient due to: [Aileron, Wing Flaps, and Elevators] Clδa Cl from Aileron Deflection NDELTA # of deflectionangles to test Clβ Cl from Sideslip DELTA specific deflection angles Clp Cl from Roll Rate derivative SPANFI dimension of flap Clr Cl from Yaw Rate derivative SPANFO Cn_Total • Total Yawing Moment Coefficient CHRDFI (Cyδa) Cn from Aileron deflection CHRDFO (Cyβ) Cn from Sideslip NTYPE nose type (1=round, 2=elliptical, 3=sharp) v(Cyp) Cn from Roll Rate derivative CB average balance chord (Cyr) Cn from Yaw Rate derivative TC average thickness • Misc PHETE tangent of arifoil trailing edge angle ε Horizontal Tail Downwash Angle PHETEP tangent of arifoil trailing edge angle δε/δα Derivative of Downwash Angle Chα Elevator-surface derivative with respect to alpha [power] prop or jet but not both (no turboprop) Chδ Elevator-surface derivative due to Elevator deflection [prop] PROPELLER ENGINE All above values calculated using a moment moment
Cons: On the other hand, although it will be less complex to code up, it forces the microcontroller to write the data twice – once when saving to the microcontroller EEPROM then once again when copying the data to the SD card. Another shortcoming is that in this method, if there is an error with the writing instruction, all the data in that set may be damaged and useless as well. Conclusion: After reviewing both approaches presented, it seems to be a tossup as to which method best suits our needs. One thing to note with both methods is that before data is passed to be written onto the SD card it will be converted into a 32 bit IEEE single float. After thorough discussion it was decided that we should save data in a consistent stream rather than big blocks of data. As defined in the data storage section, all data will be stored in a comma value separated file and these numbers need to be input in the same position each entry. In the rare event that a sensor is unable to calculate data or the microcontroller is unable to grab the value from the specified port in a timely manner, we cannot just skip over this port, because if we go without writing in a value for that certain sensor, it will offset the format of the data recorded. Table 8 displays the complete pinout of the Microchip microcontroller to each sensor. Sensor Type Connection Type Wire Microcontroller Pin# 3-Axis Gyroscope SPI 4-Wire SCK (Clock) P76 SDO (Data Out) P77 SDI (Data In) P80 CS (Chip Select) P81 3-Axis Accelerometer SPI 4-Wire SCK P10 SDO P12 SDI P11 CS P05 Rotary Position Sensor (Angle-of-Attack) Analog Analog In P26 Rotary Position Sensor (Angle-of-Sideslip) Analog Analog In P27 Humidity Sensor Analog Analog P24 Temperature Sensor SPI 4-Wire SCK P39 SDO P40 SDI P38 CS P48 Barometric Pressure Sensor I2C Clock P49 SDA (Data) P50
- Normal Force Rotary Position Sensor - 333.3 DEG - AOA, AOS 2 $5.50 $11.00 Temperature Sensor -Air Density -Calibration of other parts 1 FREE SAMPLE $0.00 Humidity Sensor -Air Density 1 $13.00 $13.00 Force Sensor - FSR 30 $6.44 $193.20 Differential Pressure Sensor -TAS 1 $12.13 $12.13 Barometric Pressure Sensor -Altitude 1 $3.81 $3.81 $261.56 Table 18: Sensor Parts List EQUIPMENT DESCRIPTION Unit Price TOTAL 8:1 Multiplexer -Probe for force sensor lines 4 FREE SAMPLE $0.00 AMPLIFIER -Voltage followers for FSR sensors -Integrator/Differentiator configs 4 $1.66 $6.64 Resistors Normal functioning of Ics * FREE SAMPLE $0.00 Capacitors -Control Power up/down switching transients -Normal functioning of Ics * FREE SAMPLE $0.00 Inductors -Control Power up/down switching transients -Normal functioning of Ics * FREE SAMPLE $0.00 Boom -2X Small Wind Vanes -Header Pins -Connectors 1 $150.00 $150.00 Watts Up Meter -Watt Meter -Power Analizer 1 $49.99 $49.99 Battery Monitoring IC -Voltage,current, and charge monitor 2 FREE SAMPLE $0.00 Current and Power Monitor -Monitors Current and Power 2 $3.78 $7.56 Voltage Regulators -2.5V - 5V ~8 FREE SAMPLE $0.00 1GB microSD Card -Data Storage Device 1 $15.00 $15.00 microSD Card Connector for IC -Mounts microSD card to IC 1 $6.00 $6.00 $235.19 Table 19: Other Parts List Parts List Group TOTAL