Skyflash

Skyflash

Prototype Panavia Tornado ADV aircraft with semi-recessed Skyflash missiles
Type Medium-range air-to-air missile
Place of origin United Kingdom
Service history
In service 1978-2006
Production history
Designer Hawker Siddeley, Marconi Space and Defence Systems
Manufacturer British Aerospace Dynamics
Unit cost £150,000 per missile
Specifications
Weight 193 kg (425 lb)
Length 3.68 m (12 ft 1 in)
Diameter 203 mm
Warhead 39.5 kg (87 lb)
Engine Rocketdyne solid propellant rocket motor
Wingspan 1.02 m (3 ft 6 in)
Operational
range
 45 km (28 mi)
Speed Mach 4
Guidance
system
 Marconi inverse monopulse semi-active radar homing

The British Aerospace Skyflash was a medium-range semi-active radar homing air-to-air missile derived from the US AIM-7 Sparrow missile and carried by Royal Air Force F-4 Phantoms and Tornado F3s, Italian Aeronautica Militare and Royal Saudi Air Force Tornados and Swedish Flygvapnet Viggens. The missile was replaced by the more capable AMRAAM.

History

Skyflash came out of a British plan to develop an inverse monopulse seeker for the Sparrow AIM-7E-2 by GEC and the Royal Aircraft Establishment (RAE) at the end of the 1960s. Having shown this was feasible Air Staff Requirement 1219 was issued in January 1972,[1] with the project code XJ.521. The contractors were Hawker Siddeley and Marconi Space and Defence Systems (the renamed GEC guided weapons division).[2] Major changes from the Sparrow were the addition of a Marconi semi-active inverse monopulse radar seeker, improved electronics, adapted control surfaces and a Thorn EMI active radar fuze. The rocket motors used were the Bristol Aerojet Mk 52 mod 2 and the Rocketdyne Mk 38 mod 4 rocket motor; the latest is the Aerojet Hoopoe.

Tests of the resulting missile showed it could function successfully in hostile Electronic Countermeasures (ECM) environments and could engage targets under a wide variety of conditions. It could be launched from as low as 100 m to attack a high-altitude target or launched at high level to engage a target flying as low as 75 m. The missile entered service on the F-4 Phantom II in 1978 as what was later called the 3000 Pre TEMP series (Tornado Embodied Modification Package).

In 1985, these aircraft were replaced with the Panavia Tornado ADV. Both the Phantom and the Tornado carried the Skyflash in semi-recessed wells on the aircraft's underbelly to reduce drag. In the Tornado, however, Frazer-Nash hydraulic trapezes projected the missile out into the slipstream prior to motor ignition. This widened the missile's firing envelope by ensuring that the launch was not affected by turbulence from the fuselage. Skyflash was therefore converted to the 5000 TEMP series to incorporate the Frazer-Nash recesses in the body of the missile, Launch Attitude Control electronics in the autopilot section and improved wing surfaces. The Tornado-Skyflash combination became operational in 1987 with the formation of the first Tornado F.3 squadron.[3]

From 1988 a further modification (6000 series) nicknamed "SuperTEMP" included the Hoopoe rocket motor to change the missile's flight profile from boost-and-glide (with a 4-second burn) to boost-sustain-glide (7-second burn), increasing its range and maneuverability.

In RAF service the missiles were usually carried in conjunction with four short-range air-to-air missiles, either AIM-9 Sidewinders or ASRAAMs.

A version with an active Thomson CSF-developed radar seeker and inertial mid-course update capability, Skyflash Mk 2 (called Active Skyflash), was proposed for both the RAF and Sweden.[4] British interest ended with the 1981 Defence Review;[5] British Aerospace (BAe) kept the proposal around until the early '90s but there were no buyers.

Further advanced Sky Flash derivatives were studied under the code name S225X,[6] and a ramjet-powered version, the S225XR became the basis for the MBDA Meteor.[7]

In 1996 the RAF announced the launch of the Capability Sustainment Programme which called for, among other things, the replacement of the Skyflash with the AIM-120 AMRAAM. AMRAAM incorporates an active seeker with a strapdown inertial reference unit and computer system, giving it fire-and-forget capability. The first Tornado ADV F.3 with limited AMRAAM capability entered service in 1998. In 2002, a further upgrade enabled full AMRAAM capability.[8] The first mention of AMRAAM as a replacement for Skyflash dates back to 1986.[9]

Characteristics

Former Operators

 Italy
 Saudi Arabia
 Sweden
 United Kingdom

References

Wikimedia Commons has media related to Skyflash AAM.

Notes

  1. ↑ Gibson 2007, p. 45
  2. ↑ Gibson 2007, p. 46
  3. ↑ Flight 1 October 1988
  4. ↑ Gibson 2007, p. 47
  5. ↑ Flight 1 August 1981
  6. ↑ Flight 30 March 1993
  7. ↑ Gibson 2007, p. 47
  8. ↑ Gibson 2007, p. 47
  9. ↑ Flight 8 February 1986

Bibliography

See also

This article is issued from Wikipedia - version of the 12/12/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.