Pierre Bonnet Gliders

hesham

hesham

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Hi,


from Sailplane and Glider magazine,here is a drawing to British Bonnet biplane
glider if 1932,I think it was a project only,is that right .
 

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Hi,


from Sailplane and Glider magazine,here is a drawing to British Bonnet biplane
glider if 1932,I think it was a project only,is that right .
 

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Hi,


and here is its page.
 

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hesham said:
...I think it was a project only,is that right .
Click to expand...


In the second column you'll read:

"The machine was built by Pierre Bonnet at Bordeaux ..... It was reported to have been finished and
flown, and to posses good maneuvrability, but since then nothing further has apparently been heard of it."
 
hesham said:
...I think it was a project only,is that right .
Click to expand...


In the second column you'll read:

"The machine was built by Pierre Bonnet at Bordeaux ..... It was reported to have been finished and
flown, and to posses good maneuvrability, but since then nothing further has apparently been heard of it."
 
Thank you my dear Jemiba,


but I never saw a picture to it,so I dubious on this Info,but may be they were right !.
 
Thank you my dear Jemiba,


but I never saw a picture to it,so I dubious on this Info,but may be they were right !.
 
Oh Yeh,sorry,


I didn't see a picture to it,we can transfer it to Aerospace section.
 
Oh Yeh,sorry,


I didn't see a picture to it,we can transfer it to Aerospace section.
 
I managed to extract two slightly higher resolution images of the aircraft structure... quality still isn't great though. I wasn't able to find higher quality images of the glider in flight.

It is a shame that the original 3-view is so unreliable.
 

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I managed to extract two slightly higher resolution images of the aircraft structure... quality still isn't great though. I wasn't able to find higher quality images of the glider in flight.

It is a shame that the original 3-view is so unreliable.
 

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By the way,

Mr. Bonnet had a glider series from BC-1 to BC-7,later I will talk about
them.
 
Interesting. I've seen references to a few of the designs and his powered biplane project.

The Bordeaux is interesting, as it is one of the last attempts at making high performance biplane gliders. If it did achieve a glide ratio of 20 then it did pretty well. My guess is that the goal was to increase the effective aspect ratio by having four narrower wings instead of two thicker ones? Or was there another reason for the biplane design?
 
From Aerophile 1934.
 

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From Aerophile 1934.
 

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It is strange.
A biplane glider. Why?
It is hard to see if the canopy is transparent.
What is that on the fuselage bottom? First it reminded me of seaplanes. Or can it be a skid for launching or landing? It looks as if it is soft, and conforming to the ground. Inflatable?
 
perttime said:
It is strange.
A biplane glider. Why?
It is hard to see if the canopy is transparent.
What is that on the fuselage bottom? First it reminded me of seaplanes. Or can it be a skid for launching or landing? It looks as if it is soft, and conforming to the ground. Inflatable?
Click to expand...
It is fairly common to place heavy fabric over the side of the skid to the fuselage on vintage gliders - reminds me of that.

I bought these - will post scans after they arrive. Thanks Sienar for the find!

Enjoy the Day! Mark
 
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Many thanks to you my dear Jemiba,

and for Bonnet,he began with BC-1 with Louis Clement in 1922,Type-2 was a
monoplane of 1923,Type-3 was a biplane of 1925,Type-4 was called Bonnet-
Duprat of 1932,Type-5 Double Monoplane of 1933,Type-6 was Multiplane of
1933 and later BC-7,it was a motor glider.
 

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Mark Nankivil said:
The photos arrived - enjoy! Mark
Click to expand...
Thanks for sharing! Very elegant design, reminds me some Luigi Collani futuristic works.
But I wonder, how upper wing would transfer loads via single vertical pylon? Such structural decision isn't common and pure cantilever wing, attached to fuselage by such way, isn't popular both for aircraft and gliders.

P.S. This glider reminds me another famous glider - Bowlus Du Pont 1 S 2100 Senior Albatross "Falcon"

NASM-A19350058000-NASM2019-01758.jpg
 
hesham said:
Please Moderator merge these topics,we have it here
Click to expand...
The topics have been merged.

Jemiba said:
"The machine was built by Pierre Bonnet at Bordeaux ..... It was reported to have been finished and
flown, and to posses good maneuvrability, but since then nothing further has apparently been heard of it."
Click to expand...

It is confirmed by these three low quality photos from Les Ailes, Dec. 21, 1933. This bird HAS flown!

Les Ailes, 1933-12-21.jpg

And here is an article about the BC-7 motor glider from the same issue, which explains that Bonnet was having trouble testing his machine because the supervisor of the local airfield refused to let him fly it there, although legally Bonnet could test it since 1°) there was no regulation preventing him to, so long as he stayed within the confines of the private airfield's air space; and 2°) the airfield he wanted to choose was a new extension and had not yet been open to traffic. The article states that Bonnet had designed himself and built seven gliders at that point.

Les Ailes, 1933-12-21.jpg
 
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