Swearingen SX-300

The Swearingen SX-300 is a high-performance homebuilt aircraft, featuring two seats and developed by Ed Swearingen during the 1980s.[2] The aircraft was offered as a kit, but this was not a comprehensive kit like contemporary designs, and its construction was beyond the abilities of the average amateur aircraft builder.[3] The airplane features a 300 horsepower (220 kW) six-cylinder engine.

SX-300
Role Homebuilt aircraft
National origin United States
Designer Ed Swearingen
First flight 1 July 1984[1]
SX-300 on the ramp
Rear of SX-300 with canopy open

Specifications (Swearingen SX-300)

Data from Flying[2]

General characteristics

  • Capacity: 2
  • Length: 21 ft 1.5 in (6.439 m)
  • Wingspan: 24 ft 4.5 in (7.430 m)
  • Height: 7 ft 6.5 in (2.299 m)
  • Wing area: 70.73 sq ft (6.571 m2)
  • Aspect ratio: 8.40
  • Airfoil: NASA NLF(1)-0416
  • Empty weight: 1,400–1,600 lb (635–726 kg) based on builder options
  • Gross weight: 2,200 lb (998 kg)
  • Max takeoff weight: 2,200–2,400 lb (998–1,089 kg) Experimental: utility or normal category
  • Fuel capacity: 400lbs, 66gal useable.
  • Powerplant: 1 × Lycoming IO-540 6-cyl. air-cooled horizontally-opposed piston engine, 300 hp (220 kW)
  • Propellers: 3-bladed

Performance

  • Maximum speed: 250 kn (290 mph, 460 km/h)
  • Cruise speed: 230–245 kn (265–282 mph, 426–454 km/h) 75% power, altitude dependant
  • Stall speed: 75–91 kn (86–105 mph, 139–169 km/h) landing configuration, clean
  • Never exceed speed: 280 kn (320 mph, 520 km/h)
  • Endurance: 3:23:00
  • g limits: +6/-3
  • Rate of climb: 2,400 ft/min (12 m/s)
  • Wing loading: 31.10–33.93 lb/sq ft (151.8–165.7 kg/m2)
  • Power/mass: 0.136

Notes
  1. Moll, Nigel (October 1984). "Swearingen kit-built flies". Reporting Points. Flying. Vol. 111, no. 10. Ziff Davis. p. 84. ISSN 0015-4806. Retrieved 16 August 2016 – via Google Books.
  2. Collins, Richard L. (January 1984). "SX300". Features. Flying. Vol. 111, no. 1. Ziff Davis. pp. 51–54. ISSN 0015-4806. Retrieved 16 August 2016 – via Google Books.
  3. Campbell, Jim (August 1986). "Hot Wings". Aviation. Popular Mechanics. Vol. 163, no. 8. Hearst Corporation. pp. 76–79. ISSN 0032-4558. Retrieved 16 August 2016 – via Google Books.

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