Blackburn Firecrest

B-48 Firecrest
Role	Strike fighter
Manufacturer	Blackburn Aircraft
First flight	1 April 1947
Primary user	Fleet Air Arm
Produced	1947
Number built	3
Developed from	Blackburn Firebrand

The Blackburn B-48 Firecrest, given the SBAC designation YA.1, was a single-engine naval strike fighter built by Blackburn Aircraft for service with the British Fleet Air Arm during World War II. It was a development of the troubled Firebrand, designed to Air Ministry Specification S.28/43, for an improved aircraft more suited to carrier operations. Three prototypes were ordered with the company designation of B-48 and the informal name of "Firecrest", but only two of them actually flew. The development of the aircraft was prolonged by significant design changes and slow deliveries of components, but the determination by the Ministry of Supply in 1946 that the airframe did not meet the requirements for a strike fighter doomed the aircraft. Construction of two of the prototypes was continued to gain flight-test data and the third was allocated to strength testing. The two flying aircraft were sold back to Blackburn in 1950 for disposal and the other aircraft survived until 1952.

The Firebrand required significant effort by Blackburn to produce a useful aircraft and the first discussions on a redesign of the aircraft with a laminar-flow wing took place in September 1943. The new wing was estimated to reduce the weight of the wing by 700 lb (318 kg) and increase the aircraft speed by 13 mph (21 km/h). The extent of redesign increased and this led to a new fuselage and other improvements. In October 1943, Blackburn's design staff, led by G.E. Petty, started work on this development of the Firebrand which led to Specification S.28/43 being issued by the Air Ministry on 26 February 1944 covering the new aircraft. The specification was designed around a Bristol Centaurus 77 radial engine with contra-rotating propellers that allowed the size of the rudder to be reduced.

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