(SNCASO) SO.9000 Trident @·AIRCRAFTUBE

  • The SNCASO SO-9050.01 Trident (F-ZWTT) The SNCASO SO-9050.01 Trident (F-ZWTT)
    The SNCASO SO-9050.01 Trident (F-ZWTT)
  • Jacques Guignard Jacques Guignard
    Jacques Guignard
  • The SEPR 481 rocket engine The SEPR 481 rocket engine
    The SEPR 481 rocket engine
  • The SO-9050.02 The SO-9050.02
    The SO-9050.02
  • SNCASO SO-9050.02 Trident SNCASO SO-9050.02 Trident
    SNCASO SO-9050.02 Trident
  • The acid drain hole The acid drain hole
    The acid drain hole
  • With the two-chamber SEPR 631 rocket engine With the two-chamber SEPR 631 rocket engine
    With the two-chamber SEPR 631 rocket engine
  • Charles Goujon Charles Goujon
    Charles Goujon
  • The SO-9050.05 (F-ZWUL) The SO-9050.05 (F-ZWUL)
    The SO-9050.05 (F-ZWUL)
  • The SO-9050.02 F-ZWTY with the SEPR 481<br>triple chamber rocket engine The SO-9050.02 F-ZWTY with the SEPR 481<br>triple chamber rocket engine
    The SO-9050.02 F-ZWTY with the SEPR 481
    triple chamber rocket engine
  • The SO.9000-01 at the Air and<br>Space museum, near Paris The SO.9000-01 at the Air and<br>Space museum, near Paris
    The SO.9000-01 at the Air and
    Space museum, near Paris

SNCASO Trident

The SNCASO SO.9000 Trident was a mixed power French prototype interceptor aircraft of the 1950s. Capable of supersonic flight the project was cancelled in July 1957 after only 12 examples had been built.

Design and development

The French Air Staff tasked SNCASO to develop a point defence interceptor, studies began in October 1948. The aircraft that emerged was a shoulder wing monoplane, to be primarily powered by a SEPR rocket engine and augmented with wing-tip mounted turbojets. First flown on 2 March 1953 by test pilot Jacques Guignard the aircraft used the entire length of the runway to get airborne powered only by its turbojets. From March 1955 the Trident I flew with new turbojets, the more powerful Dassault-built MD 30 Viper ASV.5, which produced 7.34 kN (1,654 lbf) thrust each. With these engines it soon exceeded Mach 1 in a shallow dive without rocket power.

Test flights of the SO.9000 were described by the author Bill Gunston as 'hairy' until the rocket motor was added in September 1954. During the 18-month test programme the aircraft completed over 100 flights, eventually reaching a speed of Mach 1.8 and an altitude of 20,000 metres (65,000 ft).

A Trident II was lost due to an accident on 21 May 1957 In 1958, the Trident II set time to height and altitude records. Its record altitude of 24,300 m in May was made by Roger Carpentier.

The project was cancelled in July 1957; the decision was influenced by the manned fighter cuts announced by the British Defence Minister, Duncan Sandys.

Variants

SO.9000 Trident I

Two aircraft built. The first aircraft was built at Istres and was completed in late-1952, the second aircraft 02 crashed on its first flight in September 1953. Three-chamber SEPR 481 rocket engine, each chamber producing 2,755 lbf (12,250 N) thrust.

After replacement of its two engines with Dassault MD30-ASV5 turbojets, the No.1 prototype reached Mach 1.63 in 1954.

SO.9050 Trident II

Ten pre-production aircraft ordered in 1953. Higher power, 11.77 kN (2,645 lbf), Turbomeca Gabizo turbojets, with a two-chamber SEPR 631 rocket engine (each chamber now being individually ignited for finer thrust control).

List of completed Series II aircraft

  • SO-9050.01 F-ZWTT ("T"). First flight was made on 19 July 1955 with the first rocket powered flight made on 21 December 1955. This plane exploded in mid-air on 21 May 1957 killing test pilot Charles Goujon.
  • SO-9050.02 F-ZWTY ("Y"). Made its first flight on 4 December 1955 (4 January 1956 according to other sources). Three days later it suffered from a flame out on both engines after it had started from Istres. It was damaged beyond repair, although test pilot Jacques Guignard was only slightly injured.
  • SO-9050.03 F-ZWTZ ("Z"). First flight on 30 March 1956. It was extensively tested by CEV pilots before it was withdrawn from flying status. This prototype had provisions to be flown from the ground without a pilot, although these trials were eventually never made.
  • SO-9050.04 F-ZWUK ("K"). First flight early 1956. Was the first production model with a blunt nose with provision for a fire control radar.
  • SO-9050.05 F-ZWUL ("L"). First flight by end 1957/early 1957.
  • SO-9050.06 F-ZWUM ("M"). First flight on 30 January 1958.
  • SO-9050.07 F-ZWUN (""N"). Never flew.

Aircraft on display

The preserved SO.9000-01 Trident has been on public display since 1956 at the Musée de l'Air et de l'Espace, near Paris.

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This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article SNCASO Trident of Wikipedia ( authors )

SNCASO Trident

  • Role : Research interceptor aircraft.
  • National origin : France.
  • Manufacturer : SNCASO.
  • First flight : 2 March 1953.
  • Number built : 12.

    • Specifications (SO.9000)

  • Crew : 1.
  • Length : 14 m (45 ft 11 in).
  • Height : 3.17 m (10 ft 5 in).
  • Wingspan : 8.15 m (26 ft 9 in).
  • Wing area : 14.5 m² (156 sq ft).
  • Empty weight : 3,350 kg (7,385 lb).
  • Gross weight : 5,500 kg (12,125 lb).
  • Maximum speed : 1,707 km/h (1,061 mph; 922 kn).
  • Maximum speed : Mach 1.6.
  • Powerplant :
    • Two Turbomeca Marboré centrifugal flow turbojet.
      • Thrust : 3.9 kN (880 lbf) thrust each.
    • One SEPR 481 liquid-fuelled triple chamber rocket engine.
      • Thrust : 12.37 kN (2,780 lbf) thrust per chamber.

— — — = = — — —

This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article SNCASO Trident of Wikipedia ( authors )
SNCASO SO.9000 Trident - SO.9050 Trident II : Your comments on this subject
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