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Aircraft Quiz No. 112       
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  Aircraft Quiz No. 112 
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Doug Robertson



Joined: 01 Nov 2005
Posts: 1717
Location: Southern California

PostPosted: Mon Jan 11, 2021 4:51 pm    Post subject: Aircraft Quiz No. 112 Reply with quote

What very first American designed fixed wing aircraft (not a helicopter nor a balloon) can fly as low a speed as 35 MPH and takeoff after a run of only 50 feet?


1. Name the aircraft.

2. Name the aircraft designer.Rolling Eyes

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Timothy Aanerud



Joined: 09 Jul 2006
Posts: 183
Location: KMIC

PostPosted: Mon Jan 11, 2021 7:09 pm    Post subject: Reply with quote

I'll take an early guess.
1. Flyer II
2. Orville and Wilbur Wright

The brothers launched from a track in Huffman Prairie in Dayton, Ohio.

   
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Doug Robertson



Joined: 01 Nov 2005
Posts: 1717
Location: Southern California

PostPosted: Tue Jan 12, 2021 5:58 pm    Post subject: Reply with quote

Well, I am in a bit of a quandary here as I have no exact numbers of the Wright's first flight, not finding any measured exact speeds, etc., back in that time.
The test questions refer to a much later measured speed and distance using a novel wing structure shape and retractable landing gear in a novel "first". Please continue searching.

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  Quiz 112 
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Canonman



Joined: 10 Jul 2017
Posts: 27

PostPosted: Tue Jan 12, 2021 6:30 pm    Post subject: Quiz 112 Reply with quote

Evangel 4500

Carl Mortenson

  Re: Quiz 112 
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Doug Robertson



Joined: 01 Nov 2005
Posts: 1717
Location: Southern California

PostPosted: Wed Jan 13, 2021 4:44 pm    Post subject: Re: Quiz 112 Reply with quote

Canonman wrote:
Evangel 4500

Carl Mortenson


Carl, I am not familiar with the Evangel 4500. What was the first year of its flight? My source for this quiz states the Quiz aircraft slow performance configuration was first dated in 1953. The FAA has a first registration of a 1968 Evangel 4500, so apparently
that is a substantially later aircraft than the Quiz aircraft.

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Doug Robertson



Joined: 01 Nov 2005
Posts: 1717
Location: Southern California

PostPosted: Sat Jan 16, 2021 6:47 pm    Post subject: Reply with quote

With over 150 views this puppy stopped hunting, so here are the answers. Beginning in 1953 Willard Custer, an American aviation engineer experimented with his "channel wing" design for accelerated wing lift at low twin engine aircraft speeds

1.2. With 12 years of experiments with what he called the "channel wing", his inner panels of each low wing have a "U" shape with two strut-mounted engines turning pusher props are strut-mounted, one engine on each wing. The props draw air through the channel on each wing. This decreases pressure over the wing; increasing lift. Testing revealed lift off at aircraft speeds as low as 35 mph and takeoff after only a 50 foot run. The wings also housed retractable landing gear and had an external brace between the lower two channels..

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Ztex



Joined: 28 Aug 2007
Posts: 652
Location: DFW - GKY

PostPosted: Tue Jan 19, 2021 9:29 am    Post subject: Reply with quote

Your quiz is rather wide open to answers of all kinds nowadays... Of course, early aircraft were quite slow, the Wright Flyer had a max speed of @ 35.

And today's STOL competition aircraft are flying down to @ 20 mph and using as little as 11 ft to take off!

But the channel wing machines are quite interesting!

Very Happy Very Happy

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Doug Robertson



Joined: 01 Nov 2005
Posts: 1717
Location: Southern California

PostPosted: Tue Jan 19, 2021 3:32 pm    Post subject: Reply with quote

Well, I conditioned the quiz-by asking for the VERY FIRST aircraft meeting the provided requirements, so that could be only one design meeting the quiz requirements.

Now, onward and upward to dream up another new quiz.

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