[JoeF]

Larry Hall and his quadruplane hang glider

LarryHallquadruplane.jpg (70.61 KiB) Viewed 9836 times

History of any and all quadruplane hang gliders is invited in this topic.

Random start:
Larry Hall's quadruplane hang glider
[spelling challenge: a or u ? quadruplane or quadraplane ??]

Sellers:
http://www.rootsweb.ancestry.com/~kycar ... ellers.pdf

General quadruplane images: http://tinyurl.com/Quadruplanes

[JoeF]

Mathew B. Seller's patent filed on January 31, 1908: Click for full PDF of the patent. Rotate images to see them best, as needed.
Notes and study are invited from All.
Pilot hung from airframe behind basebar held by the two uprights of the control frame.

[JoeF]

328
Fyodorov Split-wing Machine.
Designed and built by Yevgeny Stepanovich Fyodorov [Евгений Степанович Фёдоров] during the period 1895 until 1903. Fyodorov had a career in the military as an engineer, where in 1895 he presented a model aeroplane project with a “split-wing” [самолёта-пятиплана]. This model was successfully flown behind an automobile, which towed the model. On the results of the tests with this model Fyodorov decided to built a full scale aeroplane at his own expense. According to sources (Shavrov / Шавров) it was finished, but never flight tested. The machine of Fyodorov is considered the second constructed flying machine after the one of Mozhaiski [Можа́йский].

Studying a powered version of Fyodorov while imagining a hang glider version.... ??

[ARP]

Hargraves compressed air powered quadraplane:- http://www.century-of-flight.net/Aviati ... rgrave.htm

[ARP]

Depending on how you count them Chanute's multiwing could be a quadruplane:- http://spicerweb.org/Chanute/katydid.aspx

[JoeF]

Chanute's_Ladder_Kite.jpg (64.03 KiB) Viewed 9824 times

Nice, ARP.
Leads to :
http://digital.library.cornell.edu/cgi/t/text/pageviewer-idx?c=cent&cc=cent&idno=cent0054-1&node=cent0054-1%3A1&view=image&seq=82&size=150

[JoeF]

And more Katydid:

Detail study of basebar of control frame:

[JoeF]

LawrenceHargraveDEMO.jpg

Hargrave888demo.jpg (135.35 KiB) Viewed 9814 times

Hargraves compressed air powered quadraplane:- http://www.century-of-flight.net/Aviati ... rgrave.htm

==


Very neat!

Lawrence Hargrave ... about 1890.

HargraveAbout1890.jpg (14.87 KiB) Viewed 9814 times

Hargrave in several instances showed full understanding of pilot hanging behind control frame.
His quadruplane compressed-air craft upon running out of propulsion would be a glider with the mass of the payload hanging beneath the planes; he utilized the A-frame with wheels and had a tail wheel for utility during takeoff and landing the craft. A full study of Hargrave would be exciting.
[ Some text holds an extraneous "s" at the end of his name Hargraves;
it seems that without the "s" is the correct: http://en.wikipedia.org/wiki/Lawrence_Hargrave[/b] ]

Study of this photo is invited by all. What do you see? Hung seat? Pilot behind controls? Tension meter? Four planes? Five wings. Anchor. Towlines. This is not the quadruplane ARP linked for us, but this is another way of having four planes in a quadruplane kite-glider.

LawrenceHargraveDEMO.jpg

Hargrave888demo.jpg (135.35 KiB) Viewed 9814 times

http://www.design-technology.org/hargraves.htm holds some neat hang glider models (hung mass under high parasol wings).
Courtesy of Royal Aeronautical Society:

[JoeF]

Hang gliders with four planes in them seem to be part of spectrum:

http://airandspace.si.edu/images/collec ... 00cp04.jpg


Another source of the poster that has a Zoom tool for getting up good and close and clear for each part of the poster: HERE.

Quad:
but the glide ratio is not real super when pilot rests and is in glide mode just hanging on !

Another Quad effort ..

And another: When he rests into just hang gliding, then he might enter an autorotation during the glide.

I count four planes of aerodynamic action in this early effort: _

[JoeF]

Counting four layers ... perhaps inspiration to others later:

Early quad (four layers of feathers here in early Egyptian art): http://www.gutenberg.org/files/28397/28 ... 8397-h.htm
Bronze égyptien représentant un homme volant.

device driving Besnier. Reproduction by photogravure of the figure of the Journal of learned men (1678). Quad, four: