Aircraft record

Boulton Paul Defiant

Defiant · Boulton Paul · United Kingdom

Roles
Fighter (Primary)
Era
World War II
Status
Retired
Defiant Mk I aircraft. RAF Boulton Paul Defiant Mk I N3313 of No. 264 Squadron in flight.
RAF Boulton Paul Defiant Mk I N3313 of No. 264 Squadron in flight. Source · George Woodbine; public domain; source credit: Royal Air Force historical photography via Wikimedia Commons. Public domain

Reference data

Quick facts

Manufacturer
Boulton Paul
Country
United Kingdom
Status
Retired

Reference data

Historical Content

Development and Design

Aircraft family

The Boulton Paul Defiant was a British two-seat turret fighter developed before World War II. Unlike a conventional single-seat fighter, its main armament was carried in a powered turret operated by a second crew member. [1]

Aircraft family

The aircraft was intended to attack enemy formations using this unusual arrangement, but operational experience exposed important limitations when it faced conventional fighters. [1]

Operational History

Aircraft family

The Defiant saw combat during the Battle of Britain period, with mixed results. It subsequently found a more suitable role as a night fighter during 1940–1942. [1]

Aircraft family

Later in the war, Defiants were used for air-sea rescue and target-towing duties, extending the aircraft's service beyond its original fighter mission. [1]

Preserved Aircraft

Individual aircraft: N1671 · RAF Museum aircraft

The RAF Museum's Defiant N1671 served with No. 307 (Polish) Squadron RAF and later with No. 285 Squadron. It is the only surviving intact example of the type. [1]

Reference data

Specifications

Representative Variant Specifications

Representative variant

Defiant Mk I

These specifications apply to the Defiant Mk I variant and should not be read as values for every Defiant version.

Dimensions

MeasurementValue
Length10.77 m35 ft 4 in
Wingspan11.99 m39 ft 4 in

Performance

MeasurementValue
Maximum speed488 km/h303 mile per hour at 16,500 ftat 16,500 ft

Powerplant

piston · Defiant Mk I

Rolls-Royce Merlin III

Quantity: 1

Power768 kilowatt1,030 horsepowerper engine

Reference data

Variants

Recorded variants of this aircraft family. Variant entries here do not create separate public pages.

Defiant Mk I
Defiant Mk I
Representative variant

Reference data

Sources

  1. Boulton Paul Defiant Mk IRoyal Air Force MuseumDefiant Mk I representative variant specifications
  2. Boulton Paul Defiant Mk 1Royal Air Force MuseumDevelopment and Design · Aircraft family · Operational History · Aircraft family · Preserved Aircraft · Individual aircraft: N1671 · RAF Museum aircraft