Bristol Types 123, 132 and 133

Single-seat, single bay biplane fighter to Specification F.7/30 to meet the requirements of OR.1. The wings were of constant chord and heavy staggered. The upper wings were swept and without dihedral, the cantilever lower wings unswept with 6° of dihedral. Both wings carried full-span ailerons. The upper wing also carried full-span slots on the leading edge, arranged in inner and outer groups. The ailerons were linked to interceptors behind the outer slots which rose when the inner slots opened at high angles of attack. As this happened, the ailerons drooped symmetrically. The wing spars had hight tensile steel flanges with light alloy sheet webs, the upper leading edge being a duralumin stressed skin torsion box. The cantilever lower wing was in one piece and featured a double-skinned leading edge, forming condensers for the cooling system and were connected to a central honeycomb radiator installed in a tunnel under the fuselage fairing. The front of the fuselage and engine mounting formed a fully triangulated frame of high-strength steel tubes, carrying fuel tanks and two pairs of gun mounts for .303 Vickers machine guns. The fuel tanks were complex in shape and easily detachable to the side. The fuselage structure behind the cockpit was a simple Warren truss made of lipped strips of high-strength rolled steel, streamlined with formers and stringers made of light metal. The undercarriage comprised two rubber-sprung semi-cantilever units enclosed in fairings protruded from the lower wing along with short struts running from the wing to the fuselage, plus a small cross axle. The vertical tail surfaces comprised of a very small, sharply swept, fixed fin and a large rudder while the the horizontal tail was of quite high aspect ratio and aluminium-covered, carrying horn-balanced, fabric-covered elevators.. One 695 h.p. Rolls-Royce Goshawk III powerplant.

Specification
Span	Length	Height	Wing Area	Empty Wt	Max AUW	Cruise Speed	Maximum Speed	Range	Service Ceiling
29 ft 7 in	25 ft 2 in	9 ft 6 in	249 sq ft	3300 lb	4737 lb		235 mph/ 204 kn
9.02 m	7.67 m	2.9 m	23.13 m2	1497 kg	2149 kg		378 km/h

Two seat low wing metal-skinned monoplane turret fighter fighter. It featured a stressed skin cantilever wing. The rear fuselage was an aluminium monocoque and the forward fuselage was alclad-skinned over a tubular steel structure. One 850 h.p. Bristol Hydra powerplant.

Single-seat low-wing cantilever monoplane fighter based on the Type 132, armed with four guns and with a retractable undercarriage, built as a private venture to Specification F.7/30. It was the first aircraft intended for RAF service to have a retractable undercarriage and also the first Bristol aircraft to use stressed-skin construction for the wings, using recently invented Alclad sheets. The wings were of constant chord with rounded tips and of cranked, or inverted gull wing, form, with negative dihedral in the centre section and positive dihedral beyond. The fabric-covered ailerons extended over the whole of the outer wing and could be lowered symmetrically (drooped) in lieu of flaps, though the aircraft later reverted to more conventional ailerons with split flaps under the centre-section. The horizontal tail was of quite high aspect ratio and aluminium-covered, carrying horn-balanced, fabric-covered elevators. The rudder was similarly horn-balanced and fabric-covered. The rear fuselage was an aluminium monocoque and the forward fuselage was alclad-skinned over a tubular steel structure. The pilot's open cockpit was situated over the wing at mid-chord, though a cockpit enclosure was subsequently fitted. The main wheels of the aircraft retracted fully into bath-type fairings under the wings; this was done hydraulically, using a handpump. Two of the four .303 Vickers machine guns were fitted in the wing just outboard of the undercarriage fairing, the other two being on either side of the nose. Horizontal and vertal tail were identical to the Type 123. One 640 h.p. Bristol Mercury VIS powerplant enclosed in a long-chord cowling.

Specification
Span	Length	Height	Wing Area	Empty Wt	Max AUW	Cruise Speed	Maximum Speed	Range	Service Ceiling
39 ft	28 ft	9 ft 9 in	247 sq ft	3332 lb	4738 lb		260 mph/ 226 kn
11.89 m	8.53 m	2.97 m	22.95 m2	1511 kg	2149 kg		418 km/h