OTOP

[Mark Hunt]

I saw a 40%'er setup this way and when he performed an upright "elevator" 
from up high, down to the runway, it sounded like 40 fingernails comin' down 
the chaulkboard!


----- Original Message ----- 
From: "Grow Pattern" <pattern4u at comcast.net>
To: <discussion at nsrca.org>
Sent: Monday, June 06, 2005 10:59 PM
Subject: Re: OTOP


> The screech occurs when the aileron goes up. I sealed the ends and the 
> wing openings etc. It's a waste of time. It made no difference. If I raise 
> both ailerons in landing config. it squeals all the way home....
>
> Eric.
>
>
> ----- Original Message ----- 
> From: "Bob Richards" <bob at toprudder.com>
> To: <discussion at nsrca.org>
> Sent: Monday, June 06, 2005 9:42 AM
> Subject: Re: OTOP
>
>
>> I've heard high pitch squeals coming from pilots
>> before. Depends somewhat on what they ate the night
>> before, as well as the "pucker factor" of the
>> particular maneuver. In some maneuvers, such as the
>> reverse avalanche, I believe the pucker factor can
>> actually cause the pitch of the squeal to exceed the
>> frequency limits of human hearing. You'll know this is
>> the case when the dogs suddenly start howling in the
>> middle of a Masters sequence.
>>
>> :-)
>>
>> Bob R.
>>
>> --- Keith Black <tkeithb at comcast.net> wrote:
>>
>>> Let me get this straight, does Tom make the
>>> high-pitched squeal or does his plane? ;-D
>>>
>>> Keith
>>>   ----- Original Message ----- 
>>>   From: Verne Koester
>>>   To: discussion at nsrca.org
>>>   Sent: Sunday, June 05, 2005 9:56 PM
>>>   Subject: Re: OTOP
>>>
>>>
>>>   Greg,
>>>   Tom Weedon almost always makes a high-pitched
>>> squeal when he does a snap roll. I've heard a number
>>> of composite airplanes do it as well. First one I
>>> ever heard was Dave vonLinsowe's Fiber Classics
>>> Giles. As I recall, it made the squeal in a number
>>> of different maneuvers.
>>>
>>>   Verne
>>>
>>>     ----- Original Message ----- 
>>>     From: GSailwhale at aol.com
>>>     To: discussion at nsrca.org
>>>     Sent: Sunday, June 05, 2005 8:23 PM
>>>     Subject: OTOP
>>>
>>>
>>>     I test flew the OTOP today and when I entered
>>> any kind of snap roll the airplane made a real high
>>> pitch squeal. It only does it in the snap roll.
>>> Someone at the field said that they have heard of
>>> the composite airplanes doing that because of the
>>> hollow ailerons. That didn't seem to make sense to
>>> me so I thought I'd pose it to everyone to see if
>>> they have had this before in a composite airplane.
>>>
>>>     Greg Grigsby
>>
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>
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