Bristol Braemar, Pullman and Tramp

Four seat triplane long range heavy bomber to meet Air Board Specification A.2(b). A three-bay, folding biplane, initial designs favoured a central engine room configuration with shaft-driven propellers in pairs. However, this was soon abandoned as too complex and the large four-engine triplane was eventually built with the power units installed in 'push-pull' pairs, mounted on the upper surface of the middle wing, each engine driving a right-handed two-blade propeller. The wings were slightly swept but with no stagger, the two upper wings being of equal span, and the lower slightly shorter, with horn-balanced ailerons fitted to the two upper wings. The fuselage had flat sides to facilitate construction, with spruce compression members locally reinforced with plywood and braced by swaged tie-rods, and was ply-covered except for the nose section. The crew comprised two pilots, a wireless operator, a flight engineer and two gunners (in the nose and amidships). The nose gunner, who doubled as bomb aimer, had a Scarff ring-mounting for twin .303 in Lewis guns. The fitting in the dorsal position was two transversely-moving pillar mountings for one Lewis gun each. There was, additionally, a ventral position with an inverted-bow mounting for a fifth Lewis gun. The bomb load, intended to amount to six 250 lb bombs, was carried in an internal fuselage bay. The four-wheel undercarriage featured pairs of tandem wheels, with a braking system, attached to mounting struts anchored to the lower fuselage longerons and the wing spars below the engines, this structure resulting in a very narrow track. Four 230 h.p. Siddeley Puma powerplants

As Braemar I but fitted with four 400 h.p. Liberty powerplants.

Type 25 Braemer II Specification
Span	Length	Height	Wing Area	Empty Wt	Max AUW	Cruise Speed	Maximum Speed	Range	Service Ceiling
81 ft 8 in	51 ft 6 in	20 ft	1905 sq ft	10650 lb	18000 lb		125 mph/ 109 kn	1000 mi	17000 ft
24.89 m	15.7 m	6.1 m	176.98 m2	4831 kg	8165 kg		201 km/h	1609 km	5182 m

Passenger airliner featuring the wings and tailplane of the Braemar. The forward and centre fuselage formed a luxurious cabin, providing accommodation for 14 passengers in addition to the pilot and engineer, the latter occupying a fully gazed and enclosedcockpit in the extreme nose. The passenger cabin, 7 ft. in height, was divided into two by compartments for the main fuel tanks, with a narrow passage joining the six passenger forward cabin to the eight passenger aft. Access was via a door on the port side aft of the rear cabin. Large Triplex glass windows were provided for each passenger, along an adequate system of heating and electric lighting. Four 400 h.p. Liberty powerplants.

Type 25 Braemer II Specification
Span	Length	Height	Wing Area	Empty Wt	Max AUW	Cruise Speed	Maximum Speed	Range	Service Ceiling
81 ft 8 in	52 ft	20 ft	1905 sq ft	11000 lb	17750 lb	100 mph/ 87 kn	135 mph/ 117 kn		15000 ft
24.89 m	15.85 m	6.1 m	176.98 m2	4990 kg	8051 kg	161 km/h	217 km/h		4572 m

'Spares Carrier' based on the Type 26 Pullman but featuring a central engine room derived from the Type 33 project, to meet Specification 1/20. Four 230 h.p. Siddeley Puma powerplants.

Type 25 Braemer II Specification
Span	Length	Height	Wing Area	Empty Wt	Max AUW	Cruise Speed	Maximum Speed	Range	Service Ceiling
96 ft	60 ft	20 ft	2284 sq ft	12809 lb	18795 lb
29.26 m	18.29 m	6.1 m	212.19 m2	5810 kg	8525 kg