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Design => Stunt design => Topic started by: Paul Allen on November 19, 2019, 01:47:02 AM

Title: Flap thickness
Post by: Paul Allen on November 19, 2019, 01:47:02 AM
Hi,is there any issue having the flaps slightly thicker then the trailing edge.
Thanks.
Title: Re: Flap thickness
Post by: Brent Williams on November 19, 2019, 11:42:41 AM
David Fitzgerald has that arrangement on his Thundergazer. 
I don't think it has handicapped him very much....
Title: Re: Flap thickness
Post by: Ken Culbertson on November 19, 2019, 12:10:13 PM
David Fitzgerald has that arrangement on his Thundergazer. 
I don't think it has handicapped him very much....
Assuming we are talking about the wing TE and not the flap, this is really good news for my 2020 ship..  I went from a standard DuBro type hinge to a Roberts imbeded flap and in doing so I made the new flaps about 1/32 larger than the TE and didn't actually notice it till I was mounting them for the pre-finish test flights.  I was expecting some weird behavior but got none.  I guess it is not a good thing but it also might not be a bad thing either.

Ken
Title: Re: Flap thickness
Post by: Brent Williams on November 19, 2019, 12:55:42 PM
You are correct Ken, the trailing edge thickness on David's wing is slightly smaller that his flap leading edge thickness.  I had read about it previously so I made sure to look at it while he passed through Utah last July.  When I asked him about the reason for the difference, he laughed and said it is simply because that is the way the lost foam cradles arrived from Bob Hunt.   It was fun to spend some time looking over his plane in detail.
Title: Re: Flap thickness
Post by: Paul Allen on November 19, 2019, 02:59:38 PM
Thanks for the replies,I made the flaps built up, then when I shaped them I was a
little worried about how thin the trailing edge was,so I decided to sheet them,which made
them slightly thicker,then the wing trailing edge.