[TheForge] Safety -- Turning Things Off

[Peter Hirst]

This is not my field, but I just did a little reading and its pretty simple. 
A lot of right aileron, AND just a little right rudder.  Apparently all that 
right aeleron increases drag asymmetrically, and a LITTLE right rudder is 
needed to balance it.

Sheesh, doesn't everybody have Google?

:-)


----- Original Message ----- 
From: "Andrew Vida" <osan at netlabs.net>
To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Tuesday, May 27, 2008 9:15 AM
Subject: Re: [TheForge] Safety -- Turning Things Off


>
>
> Jerry Frost wrote:
>> Aileron.
>>
>> The rudder controls yaw, ailerons control roll and engine torque causes 
>> roll.
>>
>> Things were FAR harder in radial engine aricraft. They had so much 
>> gyroscopic force from the engine all control actions were through 90*. 
>> Pull back on the stick and turn left, push forward and turn right.
>>
>> Killed a lot of pilots taking off, some just taxiing.
>
>    Oh yeah, that was the other big torque hazard.  When throttling up, you 
> have to go slow and easy.  Engine would otherwise flip the plane right 
> over where it stood.
>
>    Those radial engines were such works of art.  I used to have the master 
> rod out of an old 9 cylinder Franklin.  The Franklin Institute in Philly 
> has a Pratt & Whitney R3000 cutaway on a stand.  IIRC it was the largest, 
> most powerful, and most complex radial engine ever made.  You should see 
> it... the complexity of the mechanism will make your head hurt just trying 
> to take it all in.  Thousands of parts... maybe 10 thousand, I do not 
> know.  It is mind numbing to think that each and every one of those bit 
> were designed completely by hand, so to speak. Not a computer used in any 
> of it.  I wonder if contemporary engineers could do the same?  The R3000 
> is a triple radial and each row of cylinders has several superchargers 
> running off of PTO shafting geared to the crank.  If you're ever in 
> Philly, I highly recommend the Franklin.  Go see the engine, but bring 
> your aspirin - you'll probably need it. :)
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