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The Rolls-Royce RB.93 Soar, also given the Ministry of Supply designation RSr., was a small, expendable British axial-flow turbojet intended for cruise missile use and built by Rolls-Royce Limited in the 1950s and 1960s. Like all the company's gas turbine engines it was named after a British river, in this case, the River Soar.

Soar
Rolls-Royce Soar on display at the Rolls-Royce Heritage Trust, Derby
Type Turbojet
Manufacturer Rolls-Royce Limited
First run January 1953
Developed into Rolls-Royce RB108

Design and development


The Soar was developed in the early 1950s, and was demonstrated at the Farnborough Airshow in 1953 on each wingtip of a Gloster Meteor flying testbed. It was the smallest aero-engine ever made by Rolls-Royce and was an extremely simple engine with very few parts. Its starting and control systems were almost non-existent. Lessons learned in producing the Soar at low weight and cost would be applied to the next light-weight engine, the RB108 lift engine.[1]

As a cruise-missile expendable powerplant the Soar engine had a design life of 10 hours for a Red Rapier flight time of about 1 hour (range 400 nautical miles at 475 knots).[2]


Applications


It was to be the intended powerplant for the "Red Rapier" missile project[3] one of the projects coming from the UB.109T operational requirement. Red Rapier was to be built by Vickers-Armstrong Ltd, Weybridge, Surrey as the Vickers 825. Development was cancelled in 1953. Three Soar engines were used on this design, two on the tips of the tailplane, and one on the tip of the fin. One-third scale models without engines were built and air launched from a Washington bomber (the Boeing B-29 Superfortress in RAF service) on the Woomera missile range to test the aerodynamics and autopilot operation.[4]

As the Westinghouse J81 it was a powerplant for the US AQM-35 missile [5]

It was employed as an auxiliary powerplant for the Italian Aerfer Ariete fighter design and also considered as a JATO powerplant for other aircraft.

The Soar project was cancelled in March 1965, at a reported total cost of £1.2 million.[6]


Specifications (RB.93 Soar)


Data from Rolls-Royce Aero Engines [7]

General characteristics

Components

Performance


See also


Related development

Related lists


References



Notes


  1. Gunston (RRAE) 1989 pp.152-155
  2. The Secret World of Vickers Guided Weapons, John Forbat2006, Tempus Publishing Limited, ISBN 0 7524 3769 0, p.29
  3. Skomer.net Archived 14 July 2006 at the Wayback Machine,
  4. Ozz files - Drury affair
  5. US designation systems
  6. "Cancelled projects: the list up-dated". Flight: 262. 17 August 1967.
  7. Gunston (RRAE) 1989, p. 152/Appendix 3

Bibliography





На других языках


[de] Rolls-Royce Soar

Das Rolls-Royce RB.82 Soar (ursprünglich Soar RSr.2, später Rolls-Royce RB.93 ) war ein Turbinenstrahltriebwerk in axialer Bauweise des britischen Herstellers Rolls-Royce. Es stellte einen Meilenstein in der Entwicklung von Antrieben mit hohem Schub-Gewicht-Verhältnis dar und führte weiter zur Entwicklung spezieller Hubtriebwerke für Senkrechtstarter.
- [en] Rolls-Royce Soar

[fr] Rolls-Royce RB.82 Soar

Le Rolls-Royce RB.82 Soar, aussi désigné par le Ministry of Supply (en) RSr., était un petit turboréacteur jetable britannique à flux axial pour missiles de croisière, utilisé et construit par Rolls-Royce Limited dans les années 1950.



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