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Old 14th Aug 2007, 19:40
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Mad (Flt) Scientist
 
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What we need to know is stuff like;
- In a roll, do ALL the rollspoilers on the LOW wing deploy,
or does is the number of spoilers depend on Control Wheel input?
- Is it correct that CW input needs to be greater than 11 deg for
deployment of rollspoilers?
- You are in level flight WITH speedbrakes, then do a sharp turn,
what happens? Do the UP wing spoilers retract?
- what are the max deflections in degrees for speedbrakes and rollspoilers?
Other useful information would be appreciated as well, also
on similar types of acf.
Reference the last part (only) : for various Bombardier aircraft...

(1) On some of our types it's all spoilerons, on some there is a schedule where one spoiler is deployed first, then a second, and on some one pair is a reversionary mode following a failure which disables the primary spoilerons.

(2) to avoid spoiler deployment for small amounts of roll input, a control wheel deadband is common. Magnitude varies with aircraft.

(3) Roll control usually has priority over speedbrake mode for a multi-function spoiler, so, yes, the 'other' spoilers retract

(4) specifics not going to be much use for you on the wrong aircraft, but beware of hingewise vs streamwise conversions, which can be significant for swept hingelines.
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