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MBB Bo 105

2,172 bytes added, 18:18, 18 October 2016
Adding better, not-offending passage about realism
# Move stick/yoke to neutral position (center).
# Release autotrim button {{key press|]}}.
The Bo105-model has one of the most realistic fdm regarding flight handling, based on collected detailed datas of the Bo105 from NASA-flight tests, flightmanuals, pilots and published scientific datas from various sources.
Due to its unique flight character, and its nature of being a helicopter, there had been some false assumptions about the realism in the past by many users, including its current maintainer.
Though the BO105 was the first helicopter with a rigid rotor head, the civilian version had never been eqipped with any helping assistence like SAS or even autopilot. The only helping assistence installed is a ForceTrim System by Springloading.
Only the militarian versions BO105 M-P, especially the armed versions, has a YAW-SAS to keep the helicopter better in place while aiming and shooting.
What is confusing to many users is, that they have to pull the stick quite back to hover the helicopter.
This 45% back cyclic is completly true and realistic on the BO105 and are real values, retrieved from two independant sources. Depending on CoG, loads, and flight states the position of the cyclic will vary a lot anyway, so a 0% cyclic at lift-off would make problems on other flight states like fast cruise.
The problem behind is that the rigging of the controls of real helicopters are mostly not symmetrical like the joysticks we use. So the problem is on the hadware side, since realistic and affordable helicopter sim controls are rare. Especially the ForceTrimSystem can't be simulated 100% realistic, and would need corresponding hardware for, which does not exist yet.
To counteract FGFS comes with a generic AutoTrim-function. It can be implemented to every aircraft (See Generic/Nasal/aircraft.nas). The Bo105 makes use of it by pressing | {{key press|]}} while moving the joystick. It has similar effect for joystick-users like a real AutoTrim/ForceTrim-System. Unfortunately it works on the pedals as well, which is unrealistic.
The only thing which makes the BO105 not 100% realistic as it could be are the known YASim-issues and the unrealistic underpowered flightperfomance, as it should have a climbrate twice the size.
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