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Specifications

• Span 13.1 m./ 43.0 ft
• Area 10.41 sq. m. / 112 sq. ft.
• Aspect ratio 15.9
• Airfoil Clark Y
• Empty weight 187 kg. / 412 lb.
• Payload 85 kg. / 188 lb.
• Gross weight 272 kg. / 600 lb.
• Wing loading 26.13 kg. / sq. m. / 5.36 lb. / sq. ft.
• Structure steel sheet and tube, fabric 

Performance

• L/D max. 28 85 kph / 46 kt / 53 mph
• Min. sink 0.89 m/s / 2.92 fps / 1.73 kt
• 64 kph / 35 kt / 40 mph

Other

• Country of origin USA
• Designer Bruno Haufe
• No. of seats 1
• No. built 1
• No. in the U.S. 1

The Ha-S-3, which first flew in 1971, is a development of the HA-S-2 Hobby, which had wings of shorter span (12.86 m. / 42.2 ft. ) and cockpit 2 in/ 5 cm narrower. It has a fixed main gear, with approach control by spoilers.

Haufe Buzzer 2

Specifications

• Span 10.36 m./ 34 ft
• Area 11.52 sq. m. / 124 sq.ft.
• Aspect ratio 8
• Airfoil NACA 2412 modified
• Empty weight 177 kg. / 390 lb.
• Payload 95 kg. / 210 lb.
• Gross weight 272 kg. / 600 lb.
• Wing loading 23.61 kg. / sq. m. / 4.8 lb. / sq. ft.
• Engine Curtiss snowmobile 2-cycle
• Structure steel tube fuselage and tail; single-spar, single-strut wood wing; fabric cover. 

Performance

• L/D max. est. 16 

Other

• Country of origin USA
• Designer Walter Haufe
• No. of seats 1
• No. built 1
• No. in the U.S. 1

A development of an earlier Nelson powered motor glider, the Buzzer 2’s propeller is driven through a 2:1 reduction chain, running enclosed in oil, which brings propeller rpm down to 3,000. The ship, which was designed for self launching, features a single centerline fixed wheel and small wing outrigger wheels for taxiing.

Haufe Dale Hawk 2

Specifications

• Span 12.19 m./ 40.0 ft
• Area 13.0 sq. m. / 140 sq.ft.
• Aspect ratio 12.5
• Airfoil USA 35A
• Empty weight 136 kg. / 300 lb.
• Payload 86 kg. / 190 lb.
• Gross weight 222 kg. / 490 lb.
• Wing loading 17.08 kg. / sq. m. / 3.5 lb. / sq. ft.
• Structure wood/fabric 

Performance

• Min. sink 0.91 m/s / 3.0 fps / 1.78 kt
• 64 kph / 35 kt / 40 mph

Other

• Country of origin USA
• Designer Leland Hanselman and Walter Haufe
• No. of seats 1
• No. built 1
• No. in the U.S. 1

The Hawk first flew in 1939, making a 9:50 hr. flight in 1940. After Storage during World War II it was rebuild and continued to fly until donated in 1969 to the Experimental Aircraft Association Museum. No spoilers.

If you have any comments or additional info or picture e-mail me

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