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Aviation History
1963
1963 - 0490.PDF
1963 General arrangement of one of the original Blackburn B.I 03 project studies. This example had Sapphire engines equipped with jet deflection. Comparison with the Buccaneer (below) emphasizes the reduction in wing area which boundary-layer blowing made possible BUCCANEER staff turned from considerations of Naval all-weather fighters and, having acquired a firm understanding of the drift of Admiralty thinking, began a project study known as the B.103. Precise terms of the NA.39 requirement may not be published, but they clearly called for high subsonic speed down to sea level, a radius of action of several hundred miles (possibly more than a thousand miles on favourable mission profiles), the ability to carry a large load of conventional or nuclear bombs internally, missiles or other stores externally, full navigation and fire-control/bombing radar, and flying qualities and equipment permitting safe operation from existing RN fleet carriers. Taken in toto this is asking rather a lot. It did not take Blackburn long to discover that, to produce a really attractive aeroplane meeting these requirements, they would have to be very clever indeed. In a nutshell, the basic design problem can be expressed as fol lows. In order to meet the range requirement, the total installed engine thrust had to be held to the minimum necessary for flight at just below the speed of sound. This was rendered doubly im portant in view of the fact that the specification imposed a limita tion on gross weight and overall size for carrier stowage. At the same time, the need to minimize weight and to fly at maximum speed at sea level made it imperative to keep the wing as small as possible. Thus the design team at Brough started off on the basis of maximum lift coefficient and minimum thrust. Both factors pointed at a high-subsonic aeroplane, and as time has gone by the wisdom of this choice has become increasingly evident. In order to achieve maximum lift, Blackburn played with both jet-deflection and various forms of blowing. The former was later adopted by Grumman for the A-6 Intruder, a machine designed to meet a similar requirement; but the Yorkshire designers found thai BLACKBURN BUCCANEER S.I Two Bristol Siddeley Gyron Junior 101 turbojets, each rated at 7,1001b thrust Span. 42ft 4in (folded, 19ft 11 in); length, 63ft 5in (folded, Sift lOin); height, 16ft 6ir (wings folded, 16ft Sin); tailplane span, 14ft 3in; wheelbase, 20ft 7£in; track, lift lOJi' gross wing area, 508^ sq ft; sweep angle at 0.25 chord, 40° changing to 38.6° changinf to 30.2°. All weight and performance data restricted. General arrangement of the Blackburn Buccaneer S. I
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