Ejection Seat
Over 2,400 lives saved
Currently over 1,500 seats in service
Ejection Seat
Over 2,400 lives saved
Currently over 1,500 seats in service
Mk7 Ejection Seat
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 and Prowler. The seat is operated by the following countries: Egypt, Germany, Greece, Japan, South Korea, Turkey and USA. To date, there have been 2,421 lives saved using the Mk7 seat.
New Seat Installations & Retrofits
Looking to install a new seat into your aircraft? Let us help you find your perfect solution – check out our New Seat Installations & Retrofits page for more information.
Mk7 Ejection Seat
- Operating Ceiling: 50000+ ft (15,250m)
- Minimum height/Speed: Zero/zero
- 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: 7A – 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: 600+ KIAS
- Parachute type: Irvin I 24
- Parachute deployment: Drogue assisted
- Harness type: Combined
- Ejection seat operation type: Ejection gun and multi-tube rocket pack
- Ejection gun: 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: Yes
- Guillotine: Yes
- Timers: Time delays for command ejection, Time-release unit for man/seat separation
- Seat adjustment: Up/down, manual operation
- Arm restraints: No
- Leg restraints: Yes, two garters
- Oxygen supply: Bottled oxygen
- Personal survival pack: Yes, with liferaft
- Aircrew services: Personal equipment connector (PEC) provides connections for main oxygen, emergency oxygen, air-ventilated suit, anti-g suit and mic/tel
- Canopy jettison: Yes, aircraft variant dependent
- Command ejection: Optional
Mk7 Ejection Seat
Featured in:
- F-104
- Vought F-8
- EWR VJ 101C
- PHANTOM
- Lockheed F104G / TF104G
- PROWLER
- F-5
- F-4
- F-14
Mk7 Ejection Seat
- The pilot pulls the face screen seat firing handle
- Canopy jettison initiated
- Ejection gun fires, seat moves up guide rails and the secondary cartridges fire
- Emergency oxygen tripped
- Aircrew services disconnect
- Leg restraints operate
- As seat rises, static line initiates time-delay which fires drogue gun after 0.5 seconds
- As seat rises, static line initiates time-release unit
22 in. dia then 5 ft dia drogues stabilise and slow seat
Above 10000ft
- Barostat prevents operation of time-release mechanism
High speed
- g-restrictor prevents operation of time-release mechanism
Below 10000ft, (low speed)
- 1.5 sec after initiation of time-release unit the plunger releases scissor shackle to transfer pull of drogue to lifting lines of parachute, releasing it from seat
- Release face blind
- Harness and leg lines released from seat
- Drogues deploy main parachute, pilot separates from seat
- Normal descent
- Manual separation system available if necessary. Operation of manual separation handle fires a cartridge that operates a guillotine, severing the parachute attachment line, linkages function releasing parachute harness, negative-g strap, PEC and leg restraint cords.
- Freeing parachute from seat.
- Aircrew can then use rip cord to operate parachute.
Gallery
Mk7 Ejection Seat
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 and Prowler. The seat is operated by the following countries: Egypt, Germany, Greece, Japan, South Korea, Turkey and USA. To date, there have been 2,421 lives saved using the Mk7 seat.
New Seat Installations & Retrofits
Looking to install a new seat into your aircraft? Let us help you find your perfect solution – check out our New Seat Installations & Retrofits page for more information.
Mk7 Ejection Seat
- Operating Ceiling: 50000+ ft (15,250m)
- Minimum height/Speed: Zero/zero
- 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: 7A – 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: 600+ KIAS
- Parachute type: Irvin I 24
- Parachute deployment: Drogue assisted
- Harness type: Combined
- Ejection seat operation type: Ejection gun and multi-tube rocket pack
- Ejection gun: 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: Yes
- Guillotine: Yes
- Timers: Time delays for command ejection, Time-release unit for man/seat separation
- Seat adjustment: Up/down, manual operation
- Arm restraints: No
- Leg restraints: Yes, two garters
- Oxygen supply: Bottled oxygen
- Personal survival pack: Yes, with liferaft
- Aircrew services: Personal equipment connector (PEC) provides connections for main oxygen, emergency oxygen, air-ventilated suit, anti-g suit and mic/tel
- Canopy jettison: Yes, aircraft variant dependent
- Command ejection: Optional
Mk7 Ejection Seat
Featured in:
- F-104
- Vought F-8
- EWR VJ 101C
- PHANTOM
- Lockheed F104G / TF104G
- PROWLER
- F-5
- F-4
- F-14
Mk7 Ejection Seat
- The pilot pulls the face screen seat firing handle
- Canopy jettison initiated
- Ejection gun fires, seat moves up guide rails and the secondary cartridges fire
- Emergency oxygen tripped
- Aircrew services disconnect
- Leg restraints operate
- As seat rises, static line initiates time-delay which fires drogue gun after 0.5 seconds
- As seat rises, static line initiates time-release unit
22 in. dia then 5 ft dia drogues stabilise and slow seat
Above 10000ft
- Barostat prevents operation of time-release mechanism
High speed
- g-restrictor prevents operation of time-release mechanism
Below 10000ft, (low speed)
- 1.5 sec after initiation of time-release unit the plunger releases scissor shackle to transfer pull of drogue to lifting lines of parachute, releasing it from seat
- Release face blind
- Harness and leg lines released from seat
- Drogues deploy main parachute, pilot separates from seat
- Normal descent
- Manual separation system available if necessary. Operation of manual separation handle fires a cartridge that operates a guillotine, severing the parachute attachment line, linkages function releasing parachute harness, negative-g strap, PEC and leg restraint cords.
- Freeing parachute from seat.
- Aircrew can then use rip cord to operate parachute.