Airco DH.9A - Variants

Variants

• Airco DH.9A: Original version.
• de Havilland DH.9AJ: Single prototype with Bristol Jupiter engine.
• de Havilland DH.9R: Racing aircraft with sesquiplane wing powered by Napier Lion engine - (one built).
• Airco DH.15 Gazelle: Re-engined DH.9A with a B.H.P Atlantic inline engine, one conversion
• Airco DH.16: Civil transport with widened fuselage seating four passengers in a glazed cabin behind the pilot, who sat in an open cabin, nine built. Rolls Royce Eagle or Napier Lion Engine.
• de Havilland DH-49 - proposed modernised version with Eagle IX engine (not built)
• Engineering Division USD-9A: United States built version, 9 built. One modified with a pressurised cockpit.
• Engineering Division USD-9B: USD-9A fitted with more powerful Liberty engine and greater area wings.
• Armstrong Whitworth Tadpole One prototype conversion for a naval three-seat spotter/reconnaissance aircraft.
• Westland Walrus Production version of the Tadpole conversion with the Napier Lion III engine (36 built).

• Polikarpov R-1 and R-2 Copy of DH.9A built in Soviet Union, originally at Duks Aircraft Works, supervised by Nikolai Nikolaevich Polikarpov. Early aircraft were powered by Mercedes DIV or Armstrong Siddeley Puma, but with most powered by an M-5 copy of the Liberty Engine. Produced 1922–1932, with over 2,400 built.
• Polikarpov R-1 BMW: This version of the R-1, was fitted a 240 hp (179 kW) BMW IVa engine, 20 built.
• Polikarpov MR-1: Twin-float seaplane version, 124 built.
• Polikarpov PM-2: Prototype floatplane fitted with metal floats.