Ross RS-1 Zanonia
Harland Ross built the all wood RS-1 in 1937 for Harvey Stephens, hence the designation. It was one of the first small-span high-performance sailplanes. The lines of the ship were inspired by the Lippisch Fafnir II and the name comes from an Australian seed with good gliding characteristics.
Ross flew the RS-1 in the 1937 U.S. Nationals and placed 3rd behind Peter Riedel and Richard du Pont. The ship placed 2nd in the Easton design competition.
Later, owned and piloted by John Robinson, it made American Soaring history by winning the 1940, 1941 and 1946 Nationals, placing third in 1947 and second in 1948, and setting National distance record of 466 km. /290 miles in 1940 and 523 km. /325 miles in 1947 and the world altitude record of 10,211 m. / 33,500 ft. in 1949. Robinson also completed the Worlds’s first Diamond badge using the RS-1
Wing span: 14.02 m / 46 ft
Wing area: 11.61 sq.m / 125 sq.ft
Empty Weight: 150 kg / 330 lb
Aspect ratio: 17
Airfoil: NACA 2418,2412
Payload: 122 kg / 270 lb
Gross Weight: 272 kg / 600 lb
Wing Loading: 23.43 kg/sq.m / 4.8 lb/sq.ft
Water Ballast: 0
L/DMax: 30 77 kph / 42 kt / 48 mph
MinSink: 0.70 m/s / 2.3 fps / 1.36 kt
No. Built: 1