What We Do
Mk7 Ejection Seat
An evolution of the Mk5 ejection seat.
Over 1,900 lives saved
Currently over 150 seats in service.
The introduction of the rocket pack to the range of Mk4 and Mk5 seats created the basic Mk6 and Mk7 ranges respectively. However, many of the Mk7 range of seats were subsequently embodied with additional improvements in design such as Power Retraction Systems, Remote Fired Rocket Systems and Sequencing Systems as later described.
The Mk7 ejection seat is still in service today in the F-4 Phantom
The seat is operated by the following countries: Greece, South Korea and Turkey. To date, there have been over 1,900 lives saved using the Mk7 seat.
|50000+ ft (15,250m)
|Crew boarding mass range
|7A, F-4 US Phantom – 70.8 to 120.6kg; Q7A, F5 – 65.5 to 110.0kg; GRUEA7, Prowler – 71.7 to 114.8kg; 7A F-4 RAF Phantom – 72.6 to 111.1kg; Q7, F104 Starfighter – 68.5 to 107.5kg; H7 – 73.6 to 112.2 kg
|Crew size range
|A – 3rd to 98th percentile; Q7A – 3rd to 98th percentile; GRUEA7 – 5th to 95th percentile; 7A – 5th to 95th percentile; Q7 – 5th to 95th percentile; H7 – 5th to 95th percentile
|Maximum Speed for ejection
|Irvin I 24
|Ejection seat operation type
|Ejection gun and multi-tube rocket pack
|80 ft/sec; One primary cartridge, two secondary, cartridges, 72 in. stroke Ejection initiation: Face screen or seat pan firing handle
|Barostatic time-release unit
|Yes, with g-restrictor
|Manual override handle
|Time delays for command ejection, Time-release unit for man/seat separation
|Up/down, manual operation
|Yes, two garters
|Personal survival pack
|Yes, with liferaft
|Personal equipment connector (PEC) provides connections for main oxygen, emergency oxygen, air-ventilated suit, anti-g suit and mic/tel
|Yes, aircraft variant dependent