The Bull-Armstrong B-11 is a very light jet aircraft manufactured by the Bull Aircraft Company

Development

Development of this aircraft began in 1963, when the United States Air Force needed a very light jet aircraft that could be used in all conditions and had safety features that could save both passengers and the aircraft. Wind Aircrafts, LeckWeed Aircraft, Canadair, and Bull-Armstrong Aircrafts developed the aircraft. Winds developed the WZ-77 while LeckWeed developed their HU-X6, Canadair developed the BearJet 22 and Bull developed the B-11. Once studied, Bull's design was accepted. The first flight took place on 10 August 1964 from the Bull Aircraft factory in British Columbia, Canada. The first series, the B-11-10 was 50.8 feet long and was powered by a Bull C-80 turbofan engine and could carry 8-11 passengers but unfortunately 1 of 2 B-11-10 prototypes was destroyed by a MiG-15 of the North Vietnamese Air Force in 1965 during the Vietnam War. the second prototype was later converted to the B-11-20 which was 40.6 feet long and was powered by a Bull Nunavut 300 turbofan engine. In 1988 a longer variant, the Bull B-11-30, was developed. It is 51.3 feet long and is powered by a Bull Nunavut 400 turbofan engine. In 2001, the longest variant B-11-40 was launched. The aircraft can carry 8-14 passengers and is powered by the Pratt & Whitney Canada CL-100 ** engine

Variant

Bull B-11-10

Bull B-11-10 is the first variant of the B-11. Powered by a Bull C-80 turbofan engine, this aircraft can carry 8-10 passengers and can cover a distance of 9,000 nautical miles. 1 prototype destroyed during operation by the USAF in the Vietnam War
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Bull B-11-20

The Bull B-11-20 is the shortest variant of the B-11 series, powered by the Bull Nunavut 300 turbofan engine, it can fly 7000 nautical miles and can carry 5-7 passengers. It was designated as a C-120 by the USAF. . these aircraft were produced from 1966 to 2007. The total number of production was 172
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Bull B-11-20ER

The Bull B-11-20ER is an upgrade from the B-11-20 which replaced its engine with the Bull Nunavut 400 and its instrument cockpit with a glass cockpit and fly-by-wire system. 94 aircraft were built

Bull B-11-30

Bull B-11-30 is an intermediate variant of the B-11 series. Introduced in 1988, this aircraft first flew and was deployed the same year. Using a Nunavut 400 turbofan engine and can carry 6-8 passengers, this aircraft is the best-selling aircraft in the series. Designated by the USAF as C-129 and C-89 by the RAF. In 2019, 510 had been produced
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Bull B-11-40

Bull B-11-40 is the longest variant of this series. Powered by a Pratt & Whitney Canada CL-100 turbofan engine, this aircraft can fly at a speed of about Mach 0.8. In 2019, about 79 units of this aircraft have been produced

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Bull Recovery System

A B-11-30 using it's emergency parachute in training flight

The Bull Recovery System is the safety system installed on this aircraft. This system can alert the pilot about malfunctioning or damaged components. (B-11-30 & B-11-40) This system is also equipped with an emergency parachute which can be used to rescue the aircraft when the aircraft runs out of fuel in the air or experiences engine failure and etc.