Teratorn T/A

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Role Ultralight aircraft
National origin United States
Manufacturer Teratorn Aircraft
Status Production completed
Variants Skye Treck Skyseeker

The Teratorn T/A is an American ultralight aircraft that was designed and produced by Teratorn Aircraft. The aircraft was supplied as a kit for amateur construction.[1]

Design and development[edit]

The first design by Teratorn Aircraft was known simply as the Teratorn, named after the extinct ice-age soaring bird. The company took its name from the first design. This design quickly evolved into the T/A model and was produced until supplanted in production by the Tierra I.[1]

The aircraft was designed to comply with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of 254 lb (115 kg). The original Teratorn has a standard empty weight of 212 lb (96 kg). It features a cable-braced high-wing, a single-seat, open cockpit, conventional landing gear and a single engine in pusher configuration.[1]

Both the Teratorn and the T/A are made from bolted-together aluminum tubing, with the flying surfaces covered in Dacron sailcloth. Its single-surface 32 ft (9.8 m) span wing is supported by cables attached to a simple kingpost. The landing gear is bungee suspended. Both models were supplied with the 28 hp (21 kW) Rotax 277 single cylinder, two-stroke powerplant as their standard engine.[1]

The T/A model proved a commercial success and a large number were sold. The Skye Treck Skyseeker was based on the T/A.[1]


Simple motorglider with a sling seat, utilizing weight shift for pitch control and rudder and spoilers for roll control, both cable-actuated by movement of the sling seat. Empty weight 212 lb (96 kg), gross weight 474 lb (215 kg), cruise speed 35 mph (56 km/h), stall speed 15 mph (24 km/h), glide ratio 8:1.[1]
Ultralight aircraft with a fixed seat and three-axis aerodynamic controls, with spoilers for roll control.[1]

Specifications (T/A)[edit]

Data from Cliche[1]

General characteristics

  • Crew: one
  • Wingspan: 32 ft (9.8 m)
  • Wing area: 160 sq ft (15 m2)
  • Empty weight: 227 lb (103 kg)
  • Gross weight: 500 lb (227 kg)
  • Fuel capacity: 3.3 U.S. gallons (12 L; 2.7 imp gal)
  • Powerplant: 1 × Rotax 277 single cylinder, two-stroke aircraft engine


  • Maximum speed: 50 mph (80 km/h; 43 kn)
  • Cruise speed: 45 mph (72 km/h; 39 kn)
  • Stall speed: 17 mph (27 km/h; 15 kn)
  • Range: 70 mi (61 nmi; 113 km)
  • Service ceiling: 10,000 ft (3,000 m)
  • g limits: +4/-3 (tested)
  • Maximum glide ratio: 8:1 at 28 mph (45 km/h)
  • Rate of climb: 600 ft/min (3.0 m/s)
  • Rate of sink: 270 ft/min (1.4 m/s)


  1. ^ a b c d e f g h Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page E-40. Cybair Limited Publishing, 2001. ISBN 0-9680628-1-4

External links[edit]