REFLECTOR: Elevator trim

[Laurence Coen]

Thanks Sid, I couldn't have said it better myself.

Larry Coen
N136LC

--------------------------------------------------
From: "sbjknox" <sbjknox at earthlink.net>
Sent: Tuesday, January 10, 2012 4:24 PM
To: <geoff.gerhardt at gmail.com>; "Velocity Aircraft Owners and Builders list" 
<reflector at tvbf.org>
Subject: Re: REFLECTOR: Elevator trim

>
> ----- Original Message ----- 
> From: "Geoff Gerhardt" <geoff.gerhardt at gmail.com>
>
>> Can you explain what you mean by "dynamic braking of the trim motor?"
>>
>> Geoff
>>
> Look at the drawing from Laurence Coen.  Dynamic braking is when the 
> circuit does not simply disconnect a DC motor to stop it but additionally 
> connects its two terminals together to act as a 'short-circuit' across the 
> still turning motor (now acting as a generator) and causing it to stop 
> dead.
>
> Sid
> Oklahoma
>
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