Blackburn Firebrand

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Firebrand

Centaurus IX-powered Firebrand TF Mk. IV.
Type	Strike fighter
Manufacturer	Blackburn Aircraft
Designed by	G. E. Petty
Maiden flight	1942-02-27
Retired	1953
Primary user	Fleet Air Arm
Produced	1942-1947
Number built	193

The Firebrand was a single-engine fighter aircraft designed to Air Ministry Specification N.11/40 by Blackburn Aircraft. It was designed around the Napier Sabre III 24-cylinder H-type engine as a single-seat fleet fighter for the Royal Navy.

1 Development
2 Operational history
3 Royal Navy units
4 Specifications (Firebrand TF Mk. IV)
5 References
6 Related content

[edit] Development

Work on the B-37 Firebrand proceeded slowly. An unarmed prototype first flew on 27 February, 1942, the armed F Mk. I prototype not flying until July of that year. The Sabre engine was also used in the Hawker Typhoon, a fighter already nearing production, and was earmarked for that aircraft. A new engine was needed, along with airframe improvements to handle it; along with these modifications it was deemed appropriate to convert the Firebrand into a strike fighter capable of carrying torpedoes, bombs, and rockets as well as engaging in air to air combat. Only nine production F Mk. I aircraft were built. The Firebrand was unusual in that there was an airspeed gauge mounted outside of the cockpit so that during landing the pilot would not have to look down into the cockpit to take instrument readings, presaging the development of the modern heads up display.

The first strike variant, the TF Mk. II (B-45), flew on 31 March 1943, and was an adaptation of the Mk. I. It incorporated slightly wider wingspan that allowed carriage of a torpedo between the retracted main landing gear. Like the Mk I, the TF Mk. II only saw a very limited production of 12, and was followed by the TF Mk. III with the Bristol Centaurus VII radial engine. After the first flight on 21 December, 1943, problems arose: the new engine produced more torque than the Sabre, and rudder control was insufficient on takeoff. The TF Mk. III was determined to be unsuitable for carrier operations, and work began on an improved airframe that would be better-suited for the Centaurus.

The Firebrand TF Mk. IV (B-46), as the new development was designated, featured a newer Centaurus IX engine and larger tail surfaces for better low-speed control. The enlarged rudder was horn balanced, and the wings now featured dive brakes on both upper and lower surfaces. The TF Mk. IV first flew on 17 May, 1945, and was the first version of the Firebrand to enter mass production, with 102 built. The later TF.5 featured minor aerodynamic improvements and was also built in large numbers, with 68 entering service. A further 40 TF Mk. IVs were converted to the TF.5 standard.

[edit] Operational history

The Firebrand did not see action in World War II, but it remained in front-line service on Royal Navy carriers until 1953.

[edit] Royal Navy units

700 Naval Air Squadron
703 Naval Air Squadron
708 Naval Air Squadron
736 Naval Air Squadron
738 Naval Air Squadron
759 Naval Air Squadron
764 Naval Air Squadron
767 Naval Air Squadron
778 Naval Air Squadron
787 Naval Air Squadron
799 Naval Air Squadron
813 Naval Air Squadron
827 Naval Air Squadron

[edit] Specifications (Firebrand TF Mk. IV)

Data from Jane's Fighting Aircraft of World War II^[1]

General characteristics

Crew: One pilot
Length: 39 ft 1 in (12 m)
Wingspan: 51 ft 3½ in (15.62 m)
Height: ft in (m)
Wing area: 381.5 ft² (35.44 m²)
Empty weight: 11,357 lb (5,150 kg)
Loaded weight: 15,671 lb (7,100 kg)
Max takeoff weight: 16,227 lb (7,360 kg)
Powerplant: 1× Bristol Centaurus IX 18-cylinder radial engine, 2,500 hp (1,865 kW)

Performance

Maximum speed: 350 mph (300 knots, 560 km/h)
Cruise speed: 289 mph (251 knots, 465 km/h) at 10,000 ft (3,050 m)
Stall speed: 75 mph (65 knots, 121 km/h)
Range: 1,250 mi (1,100 nm, 2,000 km) with torpedo and drop tanks
Rate of climb: 2,600 ft/min (13.2 m/s)
Wing loading: 41.7 lb/ft² (203.6 kg/m²)
Power/mass: .157 hp/lb (347 W/kg)

Armament

Guns: 4× 20 mm (0.787 in) Hispano Mk.II cannon, two in each wing
Bombs:
- 1× 1,850 lb (840 kg) torpedo, or
- 2× 1,000 lb (450 kg) bombs, one under each wing, in place of torpedo