Worlds Record Glider (oz8414)

 

Worlds Record Glider (oz8414) by Wally Simmers 1937 - plan thumbnail

About this Plan

World's Record Glider. HLG by Wallace Simmers. Hand Launched glider.

Quote: "A model that set an NAA record of 58.4 seconds for Class B indoor gliders. World's Record Glider, by Wallace Simmers.

THIS model won for me the Class B senior indoor glider record, which has had the good fortune to remain unbroken for two years. The first model of this design made a 57-second flight. Due to deep nicks made in the wing by light suspension cables, further increase in time was impossible. The second model suffered a similar fate. The third model, however, met fate with a smile in the spring of 1936.

At an official NAA record trial contest staged by the Chicago Aeronuts, the present record of 58.4 seconds was set. It was cold and damp, due to recent rains. Any advantage to be gained by the cushioning effect of ground compression was lost because of the hard, lumpy dirt floor. The first flight yielded 56 seconds. Subsequent flights were 57.2 seconds. 58 seconds and finally the record-bolding 58.4 seconds. An inexperienced bystander ruined all chances of any increase in time when he destroyed the ship in an attempt to catch it as it neared the ground on a later trial.

The model used in breaking this record represents the latest developments in present-day glider construction. Every minor detail has been evolved from long experience and painstaking work.

WING: The wing shape varies from the more common so-called double or distorted ellipse. The reason for this variation is two-fold. First, a double elliptical outline tapers too rapidly. It is desirable to have a wide chord for as great a length of the span as pos-sible, in order to get away from the flat plate effect of the thin, narrow tip section, Secondly, it is much easier to make the entire wing a true airfoil section by using less pointed taper.

The airfoil is one which experience has proven to be very good. The L/D ratio is high. This has been proven by flight tests..."

Supplementary file notes

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Worlds Record Glider (oz8414) by Wally Simmers 1937 - model pic

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Worlds Record Glider (oz8414) by Wally Simmers 1937 - pic 003.jpg
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User comments

Hi, you can use this picture for the Simmers' glider on your website if you wish [main pic]. Cheers.
Box - 04/05/2020
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  • Plan File Filesize: 325KB Filename: Worlds_Record_Glider_19in_oz8414.pdf
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