# வார்ப்புரு:Aircraft specs/doc

## Syntax

### Engines

At present, the template allows for up to three different types of engines on an aircraft. Typically, this will be used for mixed-power aircraft with piston-engines and jets, or jets and rockets, but occasionally an aircraft will be fitted with more than one type of piston engine. Please do not use this for APUs, or for alternative engine fits.  
- **<code>|eng number=</code>** – the number of this type of engine, expressed with a digit  
- **<code>|eng name=</code>** the manufacturer and model of the engine. You need to specify something here otherwise nothing will be shown. Please make sure to wikilink this to the engine article. Please do not simply link to the engine manufacturer to avoid a redlink here. Redlinks are good! They help us grow! Example: <code></code>.  
- **<code>|eng type=</code>** Examples: <code></code>, <code></code>, <code></code>.  
- **<code>|eng kw=</code>**, **<code>|eng hp=</code>** and **<code>|eng shp=</code>**– the rated power of a propeller engine (whether piston or turbine-driven)  
- **<code>|power original=</code>** For some engines the power output may have been originally measured in an unconventional unit. For example, older German engines originally had their power measured in Pferdestärke (PS). Sample usage of this parameter: **<code></code>**  
- **<code>|eng kn=</code>** and **<code>|eng lbf=</code>** – the rated dry thrust of a jet or rocket engine  
- **<code>|thrust original=</code>** Some jet or rocket engines had their original measurements taken in unconventional units. For example, many Russian and Soviet engines were originally rated using kilogram-force.  
- **<code>|eng kn-ab=</code>** and **<code>|eng lbf-ab=</code>** – the afterburning thrust of a jet engine so equipped.  
- **<code>|eng note=</code>** - a note that appears after the thrust value. Use this for when data does not fit in the other parameters eg expressing a range of power value.  
- **<code>|prop blade number=</code>** – the number of propellers on a propeller aircraft.  
- **<code>|prop name==</code>** – description of the propellers.  
- **<code>|prop dia=</code>** – the diameter of the propeller(s)  
- **<code>|rot number=</code>** – the number of main (lifting) rotors on a rotary-wing aircraft. This will only be displayed if the number is greater than 1  
- **<code>|rot dia=</code>** – the diameter of the main (lifting) rotor(s) on a rotary-wing aircraft  
- **<code>|rot area=</code>** – the area of the main (lifting) rotor(s) of a rotary-wing aircraft. For multi-rotor aircraft, this is the sum of all rotor areas.  
- **<code>|more power=</code>** - A place to put anything relevant not included already under the engine parameters  
- **<code>|perfhide=</code>** allows the "Performance" heading to be manually turned off in the rare case that of the data in this section is available. Enter <code>|perfhide=Y</code> to do this. If using this parameter, please leave a hidden note so that other editors will know to remove this line to turn the heading back on again.
::Example
:::  
- **<code>|max speed=</code>** – the maximum speed of the aircraft  
- **<code>|cruise speed=</code>** – the maximum cruising speed of the aircraft (usually only specified where the maximum speed is unknown)  
- **<code>|stall speed=</code>** – the stall speed of the aircraft  
- **<code>|never exceed speed=</code>** – never exceed speed (Vne) of the aircraft  
- **<code>|minimum control speed kmh=</code>** – minimum control speed (VMC) of the aircraft  
- **<code>|range=</code>** – the maximum unrefuelled range of the aircraft  
- **<code>|combat range=</code>** – the maximum range of the aircraft loaded for combat  
- **<code>|ferry range=</code>** – the maximum range of the aircraft with ferry fuel  
- **<code>|endurance=</code>** – the maximum flight endurance of the aircraft, where the range is unknown (this is particularly common in specifications of early aircraft).  
- **<code>|ceiling=</code>** – the service ceiling of the aircraft  
- **<code>|glide ratio=</code>** – the maximum glide ratio of an aircraft. Please only include this specification when describing gliders and sailplanes.  
- **<code>|climb rate=</code>** – the maximum rate of climb for a powered aircraft  
- **<code>|time to altitude=</code>** - *referenced* time to climb to altitude , usually in "minutes to x thousand feet"  
- **<code>|sink rate=</code>** – the minimum rate of sink for an aircraft. Please only include this specification when describing gliders and sailplanes.  
- **<code>|lift to drag=</code>** – the Lift-to-drag ratio. A unitless number.  
- **<code>|wing loading=</code>** – the loaded weight of the aircraft divided by the area of the wing.  
- **<code>|disk loading=</code>** – the loaded weight of the aircraft divided by the area of the rotor.  
- **<code>|fuel consumption=</code>** – fuel burn (kg/km or lb/mi).  
- **<code>|avionics=</code>** – a place to put any specific avionics used.  
- **<code>|power/mass=</code>** - the power to weight ratio  
- **<code>|thrust/weight=</code>** - the thrust to weight ratio - dimensionless  
:Note: calculating these from other values is considered OR, these should therefore quoted from a source  
- **<code>|more performance=</code>** – A place to put anything relevant not included already under the performance parameters