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Specifications

• Span 12.2 m./ 40 ft
• Area 8.36 sq. m. / 90 sq.ft.
• Aspect ratio 20
• Airfoil NACA 23012,8318
• Empty weight 154 kg. / 340 lb.
• Payload 91 kg. / 200 lb.
• Gross weight 245 kg. / 540 lb.
• Wing loading 29.31 kg. / sq. m. / 6.0 lb. / sq. ft.
• Structure all metal 

Performance

• L/D max. 29 84 kph / 45 kt / 52 mph
• Min. sink 0.79 m/s / 2.6 fps / 1.54 kt
• 64 kph / 35 kt / 40 mph

Other

• Country of origin USA
• Designer Irving Prue
• No. of seats 1
• No. built 3
• No. in the U.S. 2

First flown in 1949, the 215 was taken by Harold Hutchinson to 2^nd place in the 1958 Nationals. The design featured a V-tail and retractable wheel, with flaps for glidepath control. One example belongs to the National Soaring Museum. 

Prue IIA

Specifications

• Span 18.29 m./ 60 ft
• Area 17.19 sq. m. / 185 sq.ft.
• Aspect ratio 18.3
• Airfoil Naca 63 (3)-618
• Empty weight 399 kg. / 880 lb.
• Payload 213 kg. / 470 lb.
• Gross weight 612 kg. / 1,350 lb.
• Wing loading 35.60 kg. / sq. m. / 6.2 lb. / sq. ft.
• Structure all metal 

Performance

• L/D max. 36 96 kph / 52 kt / 60 mph
• Min. sink 0.61 m/s / 2.0 fps / 1.18 kt
• 72 kph / 39 kt / 45 mph

Other

• Country of origin USA
• Designer Irving Prue
• No. of seats 1
• No. built 1
• No. in the U.S. 1

The Prue IIA first flew in 1964, differing from the original Prue II by having a T-tail, fixed gear and a shorter, lighter, 2 piece wing resulting in an empty weight approximately two hundred pounds less. The IIA held the world multi-place out-and-return record (590,5 km./ 366.88 miles) for six months in 1967 and again, of 684.5 km. / 425.3 miles in 1972. The only IIA belongs to the National Soaring Museum.

Prue UHP-1

Specifications

• Span 17.37 m./ 57 ft
• Area 10.59 sq. m. / 114 sq.ft.
• Aspect ratio 28.5
• Airfoil NACA 63(3)-618
• Empty weight 229 kg. / 505 lb.
• Payload 174 kg. / 384 lb.
• Gross weight 403 kg. / 889 lb.
• Wing loading 38.05 kg. / sq. m. / 7.8 lb. / sq. ft.
• Structure all metal 

Performance

• L/D max. 40 96 kph / 52 kt / 60 mph
• Min. sink 0.49 m/s / 1.6 fps / 0.94 kt
• 79 kph / 43 kt / 49 mph

Other

• Country of origin USA
• Designer Irving Prue
• No. of seats 1
• No. built 2
• No. in the U.S. 1

The UHP-1 first flew in 1967 featuring a fixed wheel and skid, spoilers and drag chute and a T-tail with fixed stabilizers and movable rudder and elevator. Fabric covered the wing aft of the spar. A second example was built with an all-metal wing whose specifications and performance are given here(the first ship was more than 100 lbs. Lighter). It is flapped, has retractable gear and gear doors, carries water and has a fully trimmable stabilizer.

Prue Super Standard

Specifications

• Span 15.0m./ 49.2 ft
• Area 11.43 sq. m. / 123.0 sq.ft.
• Aspect ratio 19.97
• Airfoil NACA 65(3)518-A7
• Empty weight 179 kg. / 395 lb.
• Payload 100 kg. / 220 lb.
• Gross weight 279 kg. / 615 lb.
• Wing loading 24.41 kg. / sq. m. / 5.0 lb. / sq. ft.
• Structure all metal; magnesium wing skins 

Performance

• L/D max. 35 95 kph / 51 kt / 59 mph
• Min. sink 0.71 m/s / 2.33 fps / 1.38 kt
• 84 kph / 45 kt / 52 mph

Other

• Country of origin USA
• Designer Irv Prue
• No. of seats 1
• No. built 3
• No. in the U.S. 2

The Super Standard was designed to the early 1960’s Standard Class rules with 15 m. wing, fixed gear and no flaps or water ballast. Amongst other achievements, a Super Standard was flown by renowned sailplane photographer Alex Aldott to win the Hungarian national distance record at 748 km./ 465 miles.

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