34
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YASim: Difference between revisions
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→Propeller: note about constant-speed propellers.
(→piston-engine: Fix heading level error) |
(→Propeller: note about constant-speed propellers.) |
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* '''takeoff-power:''' The takeoff power required by the propeller... | * '''takeoff-power:''' The takeoff power required by the propeller... | ||
* '''takeoff-rpm:''' ...at the given takeoff RPM. | * '''takeoff-rpm:''' ...at the given takeoff RPM. | ||
* '''gear-ratio:''' The factor by which the engine RPM is multiplied to produce the propeller RPM. Optional (defaults to 1.0). | |||
* '''contra:''' When set (contra="1"), this indicates that the propeller is a contra-rotating pair. It will not contribute to the aircraft's net gyroscopic moment, nor will it produce asymmetric torque on the aircraft body. Asymmetric slipstream effects, when implemented, will also be zero when this is set. | |||
YASim assumes a fixed-pitch propeller by default. If your engine is using a constant-speed propeller, you'll also need to provide these attributes: | |||
* '''min-rpm:''' The minimum operational RPM for a constant speed propeller. This is the speed to which the prop governor will seek when the blue lever is at a minimum. The coarse-stop attribute limits how far the governor can go into trying to reach this RPM. | * '''min-rpm:''' The minimum operational RPM for a constant speed propeller. This is the speed to which the prop governor will seek when the blue lever is at a minimum. The coarse-stop attribute limits how far the governor can go into trying to reach this RPM. | ||
* '''max-rpm:''' The maximum operational RPM for a constant speed propeller. See above. The fine-stop attribute limits how far the governor can go in trying to reach this RPM. | * '''max-rpm:''' The maximum operational RPM for a constant speed propeller. See above. The fine-stop attribute limits how far the governor can go in trying to reach this RPM. | ||
* '''fine-stop:''' The minimum pitch of the propeller (high RPM) as a ratio of ideal cruise pitch. This is set to 0.25 by default -- a higher value will result in a lower RPM at low power settings (e.g. idle, taxi, and approach). | * '''fine-stop:''' The minimum pitch of the propeller (high RPM) as a ratio of ideal cruise pitch. This is set to 0.25 by default -- a higher value will result in a lower RPM at low power settings (e.g. idle, taxi, and approach). | ||
* '''coarse-stop:''' The maximum pitch of the propeller (low RPM) as a ratio of ideal cruise pitch. This is set to 4.0 by default -- a lower value may result in a higher RPM at high power settings. | * '''coarse-stop:''' The maximum pitch of the propeller (low RPM) as a ratio of ideal cruise pitch. This is set to 4.0 by default -- a lower value may result in a higher RPM at high power settings. | ||
===== piston-engine ===== | ===== piston-engine ===== | ||