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Schweizer SGS 1-21

schweit-1-21


Designed by Ernest Schweizer and built in 1947, the 1-21 won the Nationals that year flown by Dick Comey, whose 483 km / 300 miles flight was a National distance record at the time.

Stan Smith flew a 1-21 in the 1952 World Championships at Madrid Cuatro Vientos in Spain. The ship features triple spoilers (2 on top, 1 on bottom) and water ballast tank in the wing.

The structure was all metal, with some fabric on the tail and trailing edge of wing.

There was no market at the 1947 price so a simpler model, the 1-23, was produced instead.

Wing span: 15.54 m / 51 ft
Wing area: 15.33 sq.m / 165 sq.ft
Aspect ratio: 15.75
Airfoil: NACA 23012
Empty Weight: 213 kg / 470 lb
Payload: 113 kg / 250 lb
Gross Weight: 326 kg / 720 lb
Wing Load: 21.26 kg/sq.m / 4.26 lb/sq.ft
Water Ballast: 121 kg / 266 lb
L/DMax: 27 80 kph / 43 kt / 50 mph
MinSink: 0.76 m/s / 2.5 fps / 1.48 kt
Seats: 1
No. Built: 2

 

 


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