The Sands Replica 1929 Primary Glider is an American high-wing, wire-braced single-seat, primary glider that was designed by Ron Sands Sr for amateur construction, with kits supplied by Wicks Aircraft Supply. The plans are now sold by Sands' son, Ron Sands Jr.[1][2][3][4][5][6]

Design and development

Sands developed his replica 1929-style primary glider from the original designs of that era. He promotes it as "much safer than hang gliders or ultralights... [an] excellent project for school or clubs".[1]

The aircraft is made from wood, tube and doped aircraft fabric. Its 32 ft (9.8 m) span wing is cable-braced from a king post and employs a Clark Y airfoil. Like all primary gliders the cockpit is just a seat mounted on the keel with no windshield fitted. The landing gear is a fixed skid, fitted to the underside of the keel. The aircraft is designed to be bungee launched from a slope or auto-towed. The aircraft can be disassembled for storage or ground transportation.[1][2][5][6]

Sands estimates that construction takes 200 hours. In 2011 plans cost US$40 and included two 24" by 36" (60 X 90 cm) sheets, a materials list and "Safety Tips". In 2015 the available Wicks five part kit totaled US$7644.14.[1][2][4]

Variants

Plans for a steel tube fuselage version are also available.[1][2]

Specifications (1929 Primary Glider)

Data from Purdy, Sands and Wicks[1][2][4]

General characteristics

  • Crew: one
  • Length: 17.67 ft (5.39 m)
  • Wingspan: 32 ft (9.8 m)
  • Height: 7 ft (2.1 m)
  • Wing area: 157 sq ft (14.6 m2)
  • Airfoil: Clark Y
  • Empty weight: 175 lb (79 kg)
  • Gross weight: 375 lb (170 kg)

Performance

  • Maximum speed: 45 mph (72 km/h, 39 kn)
  • Cruise speed: 38 mph (61 km/h, 33 kn)
  • Stall speed: 30 mph (48 km/h, 26 kn) clean

See also

Aircraft of comparable role, configuration, and era

Related lists

References

  1. ^ a b c d e f Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 314. BAI Communications. ISBN 0-9636409-4-1
  2. ^ a b c d e Sands, Ron (June 2010). "Replica 1929 Primary Glider Plans". Retrieved September 28, 2011.
  3. ^ Sands, Ron (June 2010). "Ron Sands Replicas". Retrieved September 28, 2011.
  4. ^ a b c Wicks Aircraft Supply (n.d.). "Aircraft Kits - Experimental Replica Primary Glider". Retrieved March 1, 2014.{{cite web}}: CS1 maint: year (link)
  5. ^ a b Downey, Julia: 2002 Plans Aircraft Directory, Kitplanes, Volume 19, Number 1, January 2002, page 28. Kitplanes Acquisition Company. ISSN 0891-1851
  6. ^ a b Downey, Julia: 2003 Plans Aircraft Directory, Kitplanes, Volume 20, Number 1, January 2003, page 27. Primedia Publications. ISSN 0891-1851
Allikas: https://en.wikipedia.org/wiki/Sands_Replica_1929_Primary_Glider
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