|Année du premier vol
(ou de design, si seul projet)
|Premier constructeur||Mercury Glider Club|
|Profil aile||Clark Y|
|Masse à vide||--|
|Taux de chute mini||--|
|Structure||Bois et toile|
|Histoire résumée||The maiden flight of the first Schweizer glider (SGP 1-1) took place June 19th when Ernie, Paul and William Schweizer were 18,17, and 12 years old, respectively. The materials used to build this glider cost $135. The Schweizer brothers taught themselves to fly in this aircraft and then went on to design and buildan improved glider, the SGU 1-2.|
The Schweizer SGP 1-1 is an American, amateur-built, single-seat, high-wing primary glider that was designed by Ernest Schweizer and constructed by the Mercury Glider Club between 1929 and 1930.
The 1-1 became the first in a line of 38 glider designs that the Schweizers created and the first of over 5700 aircraft built by them.
A replica of the original 1-1 was constructed by a group of volunteers led by Ernst Schweizer in 1989 to celebrate 50 years of Schweizer sailplane construction.
The SGP 1-1 has also been referred to as the SGU 1-1.
Ernst Schweizer designed the then-unnamed primary glider, drawing inspiration from photographs of German designs then in use. The teenagers estimated that the glider would cost USD$100 to complete and saved their busfare money by walking to and from school. They were not permitted to own bicycles or to hitchhike, as their father considered those methods of transportation too dangerous. They hid the glider construction project from him, even though it was built in the Schweizer's barn.
The glider was built with a wooden structure and steel fittings. The wings and tail surfaces were covered in fabric. Typical of the primary gliders of its day, the fuselage was open and featured an open seat with stick and rudder three-axis controls. The aircraft was designed to be bungee launched with an elastic shock cord and had a single skid for landing gear.
Ernest Schweizer recognized the need to ensure that the glider was designed properly and so, even though he was still in high school, he conducted a stress analysis of the design.
The Schweizer brothers were concerned that their father might not let them fly the glider when it was completed and so they built it in secret. Their father worked in New York City during the week and would only enter his barn on weekends. The glider was constructed during weekdays and dismantled and hidden on the weekends. At the point in construction when the aircraft parts had become too large to hide, the brothers decided to assemble the aircraft as far as they could and show their father. He saw that they had done too much work to be stopped at that point and did not object to the completion of the glider.
The glider first flew on 19 June 1930, when Ernest Schweizer was 18 years old , Paul was 17 and Bill was 12. The final cost of the aircraft was USD$135.
A replica of the original 1-1 was constructed by a group of Schweizer Aircraft volunteers under the direction of Ernst Schweizer.
The glider was completed, registered as N50SZ and flown in 1989 to celebrate 50 years of Schweizer sailplanes.
The aircraft was flown by each of the Schweizer brothers and was donated to the National Soaring Museum where it remains on display.
|Liens personnalités||Pas de personnalité associée.|
|Pack(s) photos||Immatriculation : N50SZ. Photographié par Norbert Mosson () sur Retroplane.net 19 photos|
|Liens WEB||Site : Ask . Histoire. (2011-02-15 CL)|
Site : Air Britain . Photo de la réplique exposée au National Soaring Museum, Elmira, USA. (2011-02-15 CL)
Site : Wikipedia . Texte + specs. (2013-12-09 CL)
|Livres||Schweizer SGP 1-1|
par PENNEY, J. C. (2012) [p. Toutes. Histoire et monographie].
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