aircraft:tmd:airfoil
Differences
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aircraft:tmd:airfoil [2017/03/02 11:15] – [Table of flap coefficients] jh | aircraft:tmd:airfoil [2018/09/30 13:20] – [Minimal] jh | ||
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=== Other Aerodynamic classes === | === Other Aerodynamic classes === | ||
- | [[aerowing]], | + | [[aerowing]], |
===== Angle of attack ===== | ===== Angle of attack ===== | ||
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==== Table of flap coefficients ==== | ==== Table of flap coefficients ==== | ||
- | > These are total values, not the gradients needed | + | Recommended |
- | + | ||
- | ^ Type of flap ^ Delta Cl Flap ^ Delta Cd Flap ^ Delta Cm Flap ^ | + | |
- | | Plain flap | 0.7 ... 1.5 | 0.005 ... 0.06 | -0.15 ... -0.7 | | + | |
- | | Split flap | 0.7 | 0.18 | -0.19 | | + | |
- | | Slotted flap | 0.8 ... 2.0 | 0.06 | -0.14 | | + | |
- | | Fowler flap | 1.4 ... 3.0 | 0.14 ... 0.3 | -0.73 | | + | |
+ | ^ Type of flap ^ ClFlap | ||
+ | | Plain flap | 2.1 | 0.0 | -0.2 ... -0.5 | | ||
+ | | Split flap | 2.4 | 0.2 | -0.2 ... -0.9 | | ||
+ | | Slotted flap | 2.7 | 0.06 | -0.2 | | ||
+ | | Fowler flap | 2.7 ... 3.4 | 0.2 | -0.6 ... -1.1 | | ||
==== ClAlphaBase ==== | ==== ClAlphaBase ==== | ||
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Follows the same principle as the ClAlphaBase attribute. Usually this value is negative and the airfoil creates a pitch down force when the angle of attack increases beyond the stall angle (stable). The aircraft will pitch down on its own and accelerate again. A positive value is destabilizing. | Follows the same principle as the ClAlphaBase attribute. Usually this value is negative and the airfoil creates a pitch down force when the angle of attack increases beyond the stall angle (stable). The aircraft will pitch down on its own and accelerate again. A positive value is destabilizing. | ||
'' | '' | ||
+ | |||
+ | > The lower the value of '' | ||
{{ Airfoil_Stall_ClAlphaBase.png? | {{ Airfoil_Stall_ClAlphaBase.png? | ||
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==== Minimal ==== | ==== Minimal ==== | ||
This will fall back to default values for all attributes. | This will fall back to default values for all attributes. | ||
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==== All ===== | ==== All ===== | ||
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- | <[string8][Name][AirfoilTip]> | + | < |
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aircraft/tmd/airfoil.txt · Last modified: 2020/09/28 22:44 by jh