Niemi Sisu 1A

AUTRES INFORMATIONS

Constructeur(s)	Constructeur Construits Leonard NIEMI (USA) 1 Arlington Aircraft Company Société créée pour la production du Sisu 1A 4 Astro Corporation, Greenville (South Carolina, USA) La production a cessé en 1965 6 Nombre total de constructions 11
Infos techniques	Empennage en V
Histoire résumée	The Sisu was the most successful American competition sailplane produced. It won the U.S. National Soaring Championships for different pilots (John Ryan, 1962; Dean Svec, 1965; and A.J. Smith 1967). It set three world records for Al Parker out of Odessa, Texas : 784 km/ 487 miles, 1963; free distance 1,041.5 km. /647.17 miles, 1964; and goal, 930.6 km. / 578.27 miles, 1969. The prototype Sisu 1 first flew in 1958 and featured a full-monocoque wing structure and camber-changing flaps. Production models (-1A) had a lighter wing structure, vented airbrakes and slotted flaps. A.J. Smith further lightened his ship, and at one time used wingtip extensions to increase the span. In its heyday, the Sisu may have been the world's finest performance sailplane. The Sisu that set the world distance record was donated to the Smithsonian Air & Space Museum and another was donated to the National Soaring Museum.
Liens personnalités	Pas de personnalité associée.
Exemplaires existants	Immatriculé : N1100Z (En état de vol), localisation : Udvar-Hazy Center (UHC), National Air and Space Museum, Chantilly (Washington DC, USA)

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