Engine – Pratt & Whitney R-1830-90D Twin Wasp

This is a Type R1830-900, fourteen-cylinder, air-cooled radial engine with a single-stage supercharger. Bore 5.5ins, Stroke 5.5ins. Total displacement 1830cubic inches. Weight 1413lbs. 1200 hp for take-off …

Engine – Rolls-Royce Kestrel XVI

In 1925, Rolls-Royce began designing a radically new 12-cylinder engine in which each of the two banks of six cylinders were formed from a single aluminium-alloy block. …

Engine – Blackburn Cirrus II

After taking over the Cirrus-Hermes Engineering Company Limited in 1937, the first engine to be designed and built at the Blackburn works at Brough in Yorkshire, was …

Engine – de Havilland Gipsy 1

We have little information on this engine. It is one of the very early Gipsy types and dates from the late 1920s. Gipsy engines were originally designed …

Engine – de Havilland Gipsy Queen 175

This is an inverted air-cooled six-cylinder engine and in general resembles the inverted four-cylinder ones, usually representing developments of the latter type for higher power. Bore 4.72ins, …

Engine – Junkers Jumo 205

The Junkers Jumo 205 came from the opposed-piston, vertical cylinder, two stroke liquid-cooled pattern. Typical examples of this type of engine were the Jumo 204 (750hp), 205-C …

Seaplane Tender (ST) 206

May 31 Following successful trials with prototype vessel RAF 200 undertaken by Aircraftman T.E. Shaw (a.k.a. ‘Lawrence of Arabia’) in March 1931, ordered under contract 104561/31 as …

Avro Rota

By 1934, the autogyro form of aircraft, developed by Señor Juan de la Cierva, a Spaniard, was sufficiently advanced for the Royal Air Force to order a …

Bristol Bulldog MkIIA

The Bristol Bulldog was the RAF fighter of the early 1930s. Air show crowds thrilled to its smoke-trail aerobatics at Hendon in the late twenties; to the …

Hawker Hart II

First flown in July 1928, the Hart day bomber was one of the most advanced aircraft of its time with exceptional capability. Although designed as a bomber …

Hawker Hart Trainer

Used as an advanced trainer for the RAF, the Hart Trainer was developed from the Hart bomber variant. A training version allowed familiarisation of pilots with the …

Supermarine Southampton

The Southampton flying-boat was one of the most successful ever used by the Royal Air Force. With a reputation for reliability, its service life of eleven years …