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Re: Triangle Control Frame or A-Frame

Postby Rick Masters » Wed Oct 18, 2017 7:56 pm

That's a bowsprit!
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Re: Triangle Control Frame or A-Frame

Postby JoeF » Wed Oct 18, 2017 9:27 pm

Berlijn, Duitsland 1912. Foto: Overzicht van een toestel op de tentoonstellling, een motor van Luber-Aviation van 40 PK.
Creatorfotograaf: Fotograaf onbekend
Date of creation1912 Collection Photo collection illustrated magazine Het Leven (1906-1941) InstitutionSpaarnestad Photo
Source [SFA022811836], Het Leven, Spaarnestad Photo
Copyright For more information: Spaarnestad Photo Keyword• Berlijn
• Duitsland


It appears to me the bowsprit Is functioning only to hold the long front end of the Safe-Splat long skids
and not for anchoring any wing bracing.
1912BerlinZooExhibitionTRIANGLEandSafeSplatHolder.JPG
1912BerlinZooExhibitionTRIANGLEandSafeSplatHolder.JPG (118.04 KiB) Viewed 279 times
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Re: Triangle Control Frame or A-Frame

Postby Frank Colver » Wed Oct 18, 2017 10:15 pm

I agree with Joe, that's just a support for the front of the skid frame. I don't see any cables to the wing structure.

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Re: Triangle Control Frame or A-Frame

Postby Rick Masters » Wed Oct 18, 2017 11:03 pm

Yeah. At first glance I thought it was a single surface but I see now that it is shiny metal, no doubt with a structure of some kind within the wing.
Quite a fanciful design.
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Re: Triangle Control Frame or A-Frame

Postby JoeF » Sat Oct 28, 2017 11:40 pm

A contestant for the Peugeot Prize in a 1912 contest focused on human-powered flying
1912TCFmpacontest.jpg
1912TCFmpacontest.jpg (149.94 KiB) Viewed 241 times
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Re: Triangle Control Frame or A-Frame

Postby ARP » Tue Oct 31, 2017 3:14 pm

Frank Colver wrote:I agree with Joe, that's just a support for the front of the skid frame. I don't see any cables to the wing structure.

Frank


The shaft from the engine drives a chain up to the keel where a pusher prop is located. I wonder if the "keel" is extended to provide a drive to a puller prop (not fitted) at the front of the "bow sprit" ?
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Re: Triangle Control Frame or A-Frame

Postby JoeF » Thu Dec 07, 2017 2:39 pm

Thanks much to ARP (Tony Prentice) for reminding of a photo that had been seen years ago, but needs attention at several dimensions.
The photo reminds me of the PhotoFly arranged by Self-Soar Association which we have recently discussed in USHawks forum. I can feel the 1908-or-1909scene. The photo filename has "1909" in it, but the precise date of the event and photo is something someone might find; all are welcome to unfold the photo.

But of special interest is the hang glider to the right side of the photo; the hang glider seems to be a high aspect ratio hang glider featuring the triangle control frame and kingpost that has been mentioned regarding W. Simon of Breslau in 1908 where W. Simon protected the design of his hang glider by some legal papers. But the hang glider and pilot of the presently featured photo does not seem to be W. Simon; all are welcome to uncover the identity of the pilot and the precise details about the hang glider.

I present the full photo with its caption
Der Frankfurter Flugtechnische Verein bei der Arbeit.
which Google translates to : "The Frankfurt aeronautical association at work."


================================
Clip:
The attachment 1908PhotoFlyTCFinHighARhangglider.JPG is no longer available

Added ink on enlarged detail of clip:
1908PhotoFlyTCFinHighARhangglider.JPG
1908PhotoFlyTCFinHighARhangglider.JPG (17.49 KiB) Viewed 140 times
Attachments
TraceOnClipOf1908or1909TCF.jpg
TraceOnClipOf1908or1909TCF.jpg (54.07 KiB) Viewed 140 times
zeitschrift_flugsport_1909_luftsport_luftverkehr_luftfahrt_561_555.jpg
zeitschrift_flugsport_1909_luftsport_luftverkehr_luftfahrt_561_555.jpg (37.74 KiB) Viewed 140 times
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Re: Triangle Control Frame or A-Frame

Postby JoeF » Thu Dec 07, 2017 3:15 pm

==========================================
In some contrast in 1909, see powered ultralight by Hans Grade and his use of the TCF, seat, and some aerodynamic controls.
1909HansGradePoweredTCF.JPG
1909HansGradePoweredTCF.JPG (17.48 KiB) Viewed 138 times


=====================================
Logo of the periodical holding the photo of the above post's photo under study:
OSKAR URSINUS
OskarUrsinusFlugsportSTARTED1908.JPG
OskarUrsinusFlugsportSTARTED1908.JPG (38.1 KiB) Viewed 138 times

===================================
Another high contrast version of the photo under study is found at
HERE
========================================================
clip from first page of first issue of Flugsport published by Oskar Ursinus:
FlugsportNr1Clip.JPG
FlugsportNr1Clip.JPG (68.62 KiB) Viewed 137 times
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Re: Triangle Control Frame or A-Frame

Postby Bob Kuczewski » Thu Dec 07, 2017 10:26 pm

JoeF wrote:==========================================
In some contrast in 1909, see powered ultralight by Hans Grade and his use of the TCF, seat, and some aerodynamic controls.
file-3.jpeg
file-3.jpeg (17.48 KiB) Viewed 131 times

=====================================


That certainly looks like it has all the major features of a modern hang glider.

But I sure wouldn't want to be flying that thing with long legs!!
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Re: Triangle Control Frame or A-Frame

Postby JoeF » Sat Dec 09, 2017 3:24 pm

https://archive.org/details/FlugsportNr1Clip
archiving evidence that the cable-stayed triangle control frame and kingpost were part of sport hang gliding in the first decade of 1900s.
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