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Various ejection seats. In aircraft, an ejection seat or ejector seat is a system designed to rescue the pilot or other crew of an aircraft (usually military) in an emergency. . In most designs, the seat is propelled out of the aircraft by an explosive charge or rocket motor, carrying the pilot with
The Mk.6 seat was developed from the earlier Mk.4 design by the addition of a rocket pack to enable zero-zero capability. [1] A variant of the Mk.6 was fitted with a compressed air cylinder crew breathing system to provide underwater ejection capability for the carrier-borne Blackburn Buccaneer aircraft.
The Mk.5 seat was developed alongside the Mk.4 design to meet the needs of the United States Navy. Compared to the Mk.4 seat the structure and harnesses were strengthened to withstand higher crash landing loads, this resulted in a slight increase in weight. [2] Canopy breaking horns were added to allow ejection through an unjettisoned canopy. [2]
Kaman proposed a turbofan powered gyroplane it called the Stowable Aircrew Vehicle Escape Rotorseat or SAVER. The SAVER was an aircraft ejection seat with a Williams WRC-19 turbofan engine and a two-bladed non-powered rotor attached to the seat structure, the blades being telescopic and folded into the seat during normal use. [1]
For ease of maintenance the Mk.10 was designed with modular assemblies, avoiding the need to remove the whole seat from the aircraft for minor servicing tasks. [1] The first successful emergency use of a Mk.10 seat involved a Red Arrows BAE Hawk on 17 May 1980 after the aircraft struck the mast of a yacht moored offshore at Brighton. [2]
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 Mk.9 seat is considered by the manufacturer as the culmination of their earlier designs. It features only one firing handle (the face blind handle being deleted) and a new explosive gas system to operate canopy jettison, harness retraction and main gun firing, dispensing with previous mechanical systems of rods or cables.
The Mk.4 seat was designed as an improved, lightweight version of earlier Martin-Baker seats for installation in a range of lighter, smaller aircraft types. [2] Improvements included a single combined seat and parachute quick release fastener (QRF) and a snubber mechanism to allow crews to lean forward without loosening the harness. [ 2 ]
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