Isaacs Spitfire

The Isaacs Spitfire is a single seat homebuilt sporting aircraft design created by John O. Isaacs, a former Supermarine employee and retired schoolmaster and designer of the Isaacs Fury, as a 6/10th scale replica of a Supermarine Spitfire. Its first flight was on 5 May 1975.

Spitfire
Isaacs Spitfire G-ISAC
Role Replica warbird
Manufacturer Homebuilt
Designer John O. Isaacs
First flight 5 May 1975

As per the original Spitfire, the Isaacs Spitfire was a cantilever low-wing monoplane of semi-elliptical planform. The twin spar wing was built in one piece, mainly of spruce with birch plywood skin. The fuselage was of identical construction. The landing gear was non-retractable and included a tailwheel.

Plans are available for sale to home constructors.

Specifications

Data from Jane's All the World's Aircraft 1988-89[1]

General characteristics

  • Crew: 1
  • Length: 19 ft 3 in (5.87 m)
  • Wingspan: 22 ft 1 1⁄2 in (6.74 m)
  • Height: 5 ft 8 in (1.73 m)
  • Wing area: 87.0 sq ft (8.08 m2)
  • Airfoil: root: NACA 2213.2; tip: NACA 2206[2]
  • Empty weight: 805 lb (365 kg)
  • Gross weight: 1,100 lb (499 kg)
  • Fuel capacity: 10 imp gal (12 US gal; 45 L)
  • Powerplant: 1 × Continental O-200 4-cylinder air-cooled horizontally-opposed piston engine, 100 hp (75 kW)
  • Propellers: 2-bladed fixed-pitch propeller

Performance

  • Maximum speed: 150 mph (240 km/h, 130 kn) at sea level
  • Cruise speed: 134 mph (216 km/h, 116 kn)
  • Stall speed: 47 mph (76 km/h, 41 kn) (with airbrake extended)
  • g limits: +9/-4.5
  • Rate of climb: 1,100 ft/min (5.6 m/s)

See also

Aircraft of comparable role, configuration, and era

References
  1. J.W.R Taylor, 1988, p.544.
  2. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
  • Taylor, John W. R., ed. (1988). Jane's All the World's Aircraft 1988-89. Coulsdon, Surrey, UK: Jane's Information Group. ISBN 0-7106-0867-5.
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 535.
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