Blackburn Iris

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The Blackburn Iris was a 1926 British biplane flying boat.

The Iris Mark V was developed into the aircraft that subsequently became the Blackburn Perth.

Contents 1 Variants 2 Operators 3 Specifications (Iris) 3.1 General characteristics 3.2 Performance 3.3 Armament 4 Related content

[edit] Variants

• R.B.1 Iris I : Prototype. One built.
• R.B.1A Iris II : The Iris I was fitted with three 675-hp (503-kW) Rolls-Royce Condor IIIA inline piston engines.
• R.B.1B Iris III : Five-seat long-range maritime reconnaissance flying boat for the RAF. Powered by three 675-hp (503-kW) Rolls-Royce Condor IIIB inline piston engines. Four built.
• R.B.1C Iris IV : The Iris II was fitted with three 800-hp (597-kW) Armstrong-Siddeley Leopard III radial piston engines.
• R.B.1D Iris V : This was the final variant. Three Iris Mk IIIs were fitted with 825-hp (615-kW) Rolls-Royce Buzzard IIMS piston engines.

[edit] Operators

• United Kingdom.
  • Royal Air Force.

[edit] Specifications (Iris)

[edit] General characteristics

• Crew: 5
• Length: 20.5 m (67 ft 4 in)
• Wingspan: 29.6 m (97 ft 0 in)
• Height: 7.7 m (25 ft 5 in)
• Maximum gross takeoff weight: 13,405 kg (29,490 lb)
• Powerplant: 3x Rolls-Royce Condor H-1B, 311 kW (654 hp) each

[edit] Performance

• Maximum speed: 190 km/h (118 mph)
• Cruise speed: 155 km/h (97 mph)
• Range: 1,280 km (800 miles)
• Service ceiling: 3,230 m (10,597 ft)

[edit] Armament

• 3x 7.7 (.303 in) Vickers machine guns, 1 mounted forward and two aft in open cockpits; up to 900 kg (1,984 lb) of bombs

[edit] Related content