Trident TR-1 Trigull

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TR-1 Trigull
Trident TR-1 Trigull prototype C-FTRI.jpg
The first prototype Trigull, C-FTRI
Role Amphibious aircraft
National origin Canada
Manufacturer Trident Aircraft
First flight5 August 1973
StatusPrototypes only flown
Number built3
Developed from Republic RC-3 Seabee

The Trident TR-1 Trigull is a Canadian amphibious aircraft that was developed by Trident Aircraft of Burnaby, British Columbia and later Sidney, British Columbia. The aircraft was intended to be supplied as a complete ready-to-fly certified aircraft. The company encountered financial difficulties and only three prototypes were ever built. [1] [2]

Contents

Design and development

The Trigull was designed as an improved and updated Republic RC-3 Seabee. It features a cantilever high-wing, a four to six seat enclosed cabin, retractable tricycle landing gear and a single engine in pusher configuration. [1] [3]

The aircraft is made from aluminum sheet with the forward cabin made from fibreglass. Its 41.8 ft (12.7 m) span wing employs a NACA 23015 R-4 airfoil, has an area of 245.2 sq ft (22.78 m2) and flaps. Standard engines available were initially intended to be the Continental Tiara 6-285 285 hp (213 kW) and Tiara 6-320 320 hp (239 kW) four-stroke powerplants. Later the 300 hp (224 kW) Lycoming IO-540-M1A5D and turbocharged 340 hp (254 kW) Lycoming TIO-540-J2BD were used. [1] [3] [4] [5]

The design incorporates some innovative features, including wing tip floats that retract into the wing tips and provide additional wing area and lift, a nose wheel that retracts into the nose to act as a bumper for mooring on water and drooping ailerons. [1]

The Trigull was specifically designed to compete with the Republic RC-3 Seabee, Lake Buccaneer and the SIAI-Marchetti FN.333 Riviera. [1]

Trident Aircraft was founded in February 1970 to develop the TR-1. The aircraft first flight was on 5 August 1973, with the second prototype first flying on 2 July 1976. The TR-1 Trigull 285 model's Canadian Transport Canada aircraft certification was completed on 28 October 1976 with US Federal Aviation Administration certification following on 16 December 1976. Series production was to commence in the early 1980s, and orders were received for 43 aircraft, plus 23 options. The project received technical assistance from both Canadair and Grumman Aerospace Corporation. Despite financial assistance from the federal government's Ministry of Industry, Trade and Commerce and the provincial government's British Columbia Development Corporation, the company ran out of capital and ceased operations in 1980. [3] [6] [7]

Although intended for series production, only three prototypes were ever built by Trident. Two were registered and flown, CF-TRI (later C-FTRI) and C-GATE, while the third was an engineering test airframe. [8]

The type certificate has been held by Viking Air of Sidney, British Columbia since 2006. Viking Air also owns the two remaining prototype aircraft. In 2003 Viking Air indicated an interest in producing the Trigull as a turbine-powered amphibian, with a price at that time estimated at US$400,000, but since then no further news has been released. [6] [7] [8] [9] [10]

Variants

TR-1 Trigull 285
Model with the Continental Tiara 6-285 285 hp (213 kW) engine and four seats. Type certified in Canada on 28 October 1976 and in the United States on 16 December 1976. [1] [6] [7]
TR-1 Trigull 320
Model with the Continental Tiara 6-320 320 hp (239 kW) engine and six seats. [1]

Specifications (Trigull 285)

Data fromPlane and Pilot. [1] [5]

General characteristics

Performance

See also

Related development

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References

  1. 1 2 3 4 5 6 7 8 Plane and Pilot: 1978 Aircraft Directory, page 77. Werner & Werner Corp, Santa Monica CA, 1977. ISBN   0-918312-00-0
  2. Aerofiles (2 June 2009). "Trident" . Retrieved 1 July 2012.
  3. 1 2 3 Saevdal, Steinar (13 October 2010). "The Trigull Story" . Retrieved 1 July 2012.
  4. Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage" . Retrieved 1 July 2012.
  5. 1 2 Saevdal, Steinar (10 October 2010). "Trident Trigull Specifications" . Retrieved 1 July 2012.
  6. 1 2 3 Transport Canada (7 September 2011). "NAPA Issued Certificates Online: Certificate Detail" . Retrieved 1 July 2012.
  7. 1 2 3 Federal Aviation Administration (May 1987). "Type Certificate Data Sheet No. A19AE" . Retrieved 1 July 2012.
  8. 1 2 Transport Canada (28 April 202). "Canadian Civil Aircraft Register: Quick Search Result for Trident Trigull TR-1" . Retrieved 27 February 2023.
  9. Saevdal, Steinar (13 October 2010). "The Trident Trigull Amphibian" . Retrieved 1 July 2012.
  10. Niles, Russ (30 March 2003). "Bush Plane Legends Come Back". AVweb. Retrieved 1 July 2012.

Further reading