Haufe_HA-S-3_Hawk

Haufe HA-S-2 Hobby

Haufe HA-S-2 Hobby

American glider

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]

Quick Facts HA-S-2 Hobby, Role ...

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