Max Bank Angle 40º

by Bill Russini in General Tech Discussion 7 years ago

Is this really true the 912ul/s restricted to 40º of aircraft bank angle?

Re: Max Bank Angle 40º

by RotaxOwner Admin » 7 years ago

RotaxOwner Admin

59 1.59k 15.4k

Have a look in the 912 Installation Manual, section 72-00-00 Page 9 and Page 10, there they describe 'bank angle' (from the engine's point of view) in more detail:

"The resulting bank angle β (depending on acceleration/deceleration) may
never exceed the max. bank angle.
NOTE: Pitch or roll angle α is not equal with β, except stabilized
condition (without acceleration)"

IM_bank-angle.png (You do not have access to download this file.)

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Re: Max Bank Angle 40º

by ERNEST BITTEN » 7 years ago

ERNEST BITTEN

7 37 81

So the answer is "yes do not exceed 40 degrees bank angle" ??

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Re: Max Bank Angle 40º

by Rob Seaton » 7 years ago

Rob Seaton

3 1.32k 251

Pitch or roll angle α is not equal with β, except stabilized
condition (without acceleration)"
Translation: 40 degree limit only applies in uncoordinated flight, neg G's or a sustained climb.
If you are in a coordinated turn/climb with positive G's the 40 degree limit does not apply.

Thank you said by: Ken Ryan, Bill Russini, RotaxOwner Admin, Garrett Wysocki

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Re: Max Bank Angle 40º

by Roger Lee » 7 years ago

Roger Lee

128 5.28k 4.98k

Here's why it makes no difference with positive G's or coordinated flight.

https://www.youtube.com/watch?v=V9pvG_ZSnCc

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Thank you said by: RotaxOwner Admin, Garrett Wysocki, Andrew Dunning, Ken Ryan

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Re: Max Bank Angle 40º

by Norvel Swallie » 7 years ago

Norvel Swallie

23 37 73

Good Job! That is an explanation that has impact!

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Max Bank Angle 40º

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