Haufe HA-S-2 Hobby

The Haufe HA-S-2 Hobby is an American, high-wing, single seat glider that was designed by Bruno Haufe and Klaus Hill for amateur building and first flown in 1967.[1][2][3]

HA-S-2 Hobby
Role Glider
National origin United States
Designer Bruno Haufe and Klaus Hill
First flight 1967
Introduction 1967
Status Plans not currently available
Number built two

Design and development

The HA-S-2 all-metal sailplane design was built as a follow-on to the previous Haufe-Hill collaboration, the Haufe HA-G-1 Buggie all-metal utility glider. The HA-S-2 took five years to design and build and first flew in Utah in 1967. The aircraft features a fixed monowheel landing gear, spoilers and is registered as an Experimental - amateur-built.[1][2][3]

After the prototype HA-S-2 was finished a second example was completed from plans by Russell Worrell of Morgan, Utah in 1971. This version has a cockpit that is 2 in (5.1 cm) wider and has in increased wingspan of 43 ft (13.1 m), 1.8 ft (0.5 m) greater than the original. The second example was designated as the HA-S-3 Hobby and is also registered as an Experimental - amateur-built.[1][2][4]

Variants
HA-S-2
Original model with a 41.23 ft (12.6 m) wingspan. One built.[1][2][3]
HA-S-3
Second model built with a 2 in (5.1 cm) wider cockpit and a 43 ft (13.1 m) wingspan. One built.[1][2][4]

Specifications (HA-S-2)

Data from Soaring[2]

General characteristics

  • Crew: one
  • Wingspan: 41 ft 2.4 in (12.558 m)
  • Wing area: 100 sq ft (9.3 m2)
  • Aspect ratio: 17:1
  • Airfoil: Clark Y
  • Empty weight: 340 lb (154 kg)
  • Gross weight: 540 lb (245 kg)

Performance

  • Maximum glide ratio: 28:1 at 46 mph (74 km/h)
  • Rate of sink: 174 ft/min (0.88 m/s) at 40 mph (64 km/h)
  • Wing loading: 5.4 lb/sq ft (26 kg/m2)

See also

References
  1. Activate Media (2006). "Hobby HA-S-3 Haufe". Archived from the original on 5 April 2012. Retrieved 25 March 2011.
  2. Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 12. Soaring Society of America, November 1983. USPS 499-920
  3. Federal Aviation Administration (March 2011). "Make / Model Inquiry Results". Retrieved 25 March 2011.
  4. Federal Aviation Administration (March 2011). "Make / Model Inquiry Results". Retrieved 25 March 2011.
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