Today's Message Index:
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1. 03:41 AM - Re: Re: AOA LIMITER (Alec)
2. 07:42 AM - Re: AOA LIMITER (user9253)
Message 1
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The DA42 has (or had - I think it can be removed) a stick limiter to prevent overrotation
during a go-around. It was engaged when the flaps were lowered.
How will your system distinguish when its safe to allow the AoA to increase for
landing, and when it isnt?
Sent from my iPhone
> On May 23, 2025, at 13:17, user9253 <fransew@gmail.com> wrote:
>
>
> Dan T.
> Thanks for your suggestion.
> Anything that will help prevent the pilot from stalling the airplane is beneficial.
> But pilots have been known to ignore blaring stall warning horns and stick shakers
> and still manage to stall and spin in. A stall proof aircraft will save lives.
> The challenge will be designing an AOL Limiter system that will not create
> a dangerous situation when it fails.
>
> --------
> Joe Gores
>
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>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=515427#515427
>
>
>
>
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>
>
Message 2
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The AOA Limiter that I envision would not limit the stick to a fixed position.
The aft limit of stick position would contently change and be determined by the
AOA.
Think of it as an autopilot, not for heading, but for AOA. The automatic system
would do the same thing that a human does on approach to landing on a short runway.
It would allow the pilot to pull the stick back as far as possible without actually
stalling the wings.
If the pilot pulls the stick back too far, then just before the wings stall, the
AOA
Limiter would push the stick forward just enough to prevent the stall while still
allowing the plane to fly as slowly as possible.
Think of the AOA Limiter as a muscular flight instructor teaching a student to
land
as short as possible while approaching over obstacles. The student is about to
stall right over the trees when the flight instructor overpowers the student
and pushes the stick slightly forward.
The AOA Limiter would allow the pilot to move the stick as normal except it
would not allow the pilot to stall the wings.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=515433#515433
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