Martin-Baker

The factory for building aircraft was established in 1929 by James Martin and "Martin's Aircraft Works" was founded at Denham by James Martin and Captain Valentine Baker with financial help from Francis Francis. The company was building a prototype aircraft, the MB 1, using the design patents for aircraft structures held by Martin. On 17 August 1934, the Martin-Baker Aircraft Company was formed to continue the work of aircraft development. Martin and Baker designed an unconventional, two-seat, low-wing monoplane design in the early 1930s as the MB 1. This was powered by a de Havilland Gipsy engine mounted in the fuselage behind the seats and driving a fixed pitch propeller through a shaft running horizontally between the pilot and passenger. The project was abandoned due to financial constraints, although the fuselage and engine installation had been completed. Martin-Baker also constructed an autogyro designed by Raoul Hafner. This, their first complete aircraft project, was later tested by Captain Baker at Heston Aerodrome. In 1935, Martin and Baker designed and flew their Martin-Baker MB 1, a two-seat light touring aircraft. Their first military design was the Martin-Baker MB 2, a Napier Dagger–powered fighter that flew in 1938. It was a private venture to meet Air Ministry Specification F.5/34 for a fighter for service in the tropics. The MB 2 was tested but neither it nor other designs to F.5/34 were adopted. • Martin-Baker MB 3 (1942): a six-cannon fighter design, powered by a Napier Sabre. Baker was killed in a crash while testing the prototype. • Martin-Baker MB 6 (1945): a Second World War jet fighter project with a swing-arm, 0/0 spring-loaded ejection seat. • Martin-Baker MB 7 (1946) Black Bess: a postwar interceptor/high-speed test aircraft concept. Small flying models were made but the project was cancelled in 1947. Martin-Baker manufactured aircraft components, including retrofit improvements to the ammunition belt feeds for the Hispano Mk II autocannon and armoured seats for Supermarine Spitfires, throughout the Second World War. James Martin also designed and manufactured explosive bolt cutters fitted to bomber wings to cut barrage balloon cables that were fitted to many aircraft and saved a number of aircraft. In 1944, the company was approached by the Ministry of Aircraft Production to investigate ejection systems enabling pilots to bail out safely from high-speed fighter aircraft. ==Ejection seats==

WA638, owned by Martin-Baker and used for ejection seat tests 1961–1976 Martin-Baker investigated ejection seats from 1934 onwards, several years before Germany and Sweden proposed similar systems in 1938. The company concluded that an explosive-powered ejection seat was the best solution. In particular, Baker's death in 1942 during a test flight of the MB 3 affected Martin so much that pilot safety became his primary focus and led to the later reorganisation of the company to focus primarily on ejection seats. In 1944, James Martin was asked by the Ministry of Aircraft Production to develop methods for fighter pilots to escape their aircraft. Studies were conducted to find the limits of upward acceleration that the human body could stand. The first dummy shot with the seat loaded to was made on 20 January 1945, and four days later one of the company's experimental fitters, Bernard Lynch, undertook the first "live" ride, being shot up the rig to a height of . In three further tests, the power of the cartridge was progressively increased until a height of 10 feet was reached, at which stage Lynch reported the onset of considerable physical discomfort. The first seat was successfully live-tested by Lynch on 24 July 1946, who ejected from a Gloster Meteor travelling at IAS at over Chalgrove Airfield in Oxfordshire. The first production Martin-Baker ejection seat, a 'Pre-Mk 1', was installed in the Saunders-Roe SR.A/1 prototype. The first use of an ejection seat in a practical application by a British pilot involved the Armstrong Whitworth A.W.52 flying wing experimental aircraft in May 1949. Martin-Baker was a pioneer in expanding the operational envelope of the ejection seat to enable it to be used at low altitudes and airspeeds, leading eventually to development of the "zero-zero" capability in 1961. ==Applications==

Martin-Baker Mk.1 Martin-Baker Mk.2 Martin-Baker Mk.3 Martin-Baker Mk.4 Martin-Baker Mk.5 Martin-Baker Mk.6 Martin-Baker Mk.7 Martin-Baker Mk.8 • Embraer EMB 312 Tucano • BAC TSR-2 Martin-Baker Mk.9 • Dornier Do 31 • Hawker Siddeley Harrier • Nord 500 • SEPECAT Jaguar • VFW VAK 191B Martin-Baker Mk.10 Martin-Baker Mk.11 • Pilatus PC-7 Turbo Trainer • Pilatus PC-9 • PZL-130TC Orlik Martin-Baker Mk.12 • Hawker Siddeley Harrier Martin-Baker Mk.14 NACES (SJU-17) This ejection seat is used by the US Navy and is often designated Martin-Baker NACES (Naval Aircrew Common Ejection Seat) SJU-17 with a suffix letter for the different variants. • Grumman F-14D Tomcat • McDonnell Douglas F/A-18 Hornet • McDonnell Douglas T-45 Goshawk Martin-Baker Mk.15 • Pilatus PC-7 Mk II • UTVA Kobac Martin-Baker Mk.16 • Aero L-39 Skyfox • Alenia Aermacchi M-346 Master • Beechcraft T-6 Texan II • Dassault Rafale • Eurofighter Typhoon • TAI Hürkuş • Lockheed Martin F-35 Lightning II • Northrop T-38 Talon • Pilatus PC-21 • HAL Tejas • Northrop F-5 • JF-17 Thunder Martin-Baker Mk.17 Extremely compact and lightweight ejection seat designed with minimise mass and maintenance. Most lightweight ejection seat in Martin-Baker inventory. • Grob G 120TP Martin-Baker Mk.18 • KAI KF-21 Boramae ==Operations==

The Martin-Baker company uses its own airfield, Chalgrove Airfield, in Oxfordshire for operational testing of ejection seats. In 2016, ejection tests were carried out at Cazaux Air Base; the company's Meteor aircraft testbeds were flown from Chalgrove to France for them. Two Gloster Meteor T.7 aircraft, WL419 and WA638, remain in service with the company as flying testbeds. Another Meteor (WA634), used in early development of ejection seats, is retained at the Royal Air Force Museum Midlands, Cosford. ==Ejection Tie Club==

Martin-Baker also sponsors an "Ejection Tie Club", producing a tie, patch, certificate, tie pin and membership card for those whose lives have been saved by a Martin-Baker ejection seat. The company also partnered with Bremont to produce a limited-edition wristwatch for members of the club. The watch must be purchased privately, though Martin-Baker does subsidize its cost. , there are now over 6,000 registered members of the club since it was founded in 1957. ==Red Arrows pilot incident==

In 2011, Red Arrows pilot Flt. Lt. Sean Cunningham was ejected from his Hawk T1 jet on the ground at RAF Scampton. The parachute failed to deploy and Cunningham was killed. On 22 January 2018, company director John Martin entered a guilty plea to breaching Section 3(1) of the Health and Safety at Work etc. Act 1974 on behalf of Martin-Baker wherein he admitted that the company had been aware of a technical problem with the ejector seat since 1990, but failed to notify the RAF. The firm admitted the health and safety breach on the basis it had failed to provide a written warning to the RAF about over-tightening a bolt on the aircraft. ==References==