MK16US16E EJECTION SEAT
for F-35
Competitively selected by Lockheed MartinThe US16E design is common to all F-35 variants

The System Development & Demonstration (SDD) Ejection Seat that was selected by Lockheed Martin Aeronautics Company is a further development of the Mk.16 range that has already been successful with the T-6 Texan II, Eurofighter Typhoon, NASA T-38N and USAF T-38 upgrade programmes and other numerous aircraft platforms around the world.

The US16E Ejection Seat provides an unprecedented balanced optimisation between key performance parameters such as safe terrain clearance limits, physiological loading limits, pilot boarding mass and anthropometric accommodation ranges to fully meet the F-35 Escape System requirements. The US16E will be common to all F-35 aircraft variants.

The US16E is the only Qualified Ejection Seat that meets the US Government defined Neck Injury Criteria (NIC) across the pilot accommodation range.

Martin-Baker is very proud to support the F-35 Programme. The programme will sustain approximately 700 jobs at Martin-Baker into the future, also supporting 66 sub-tier suppliers located within 20 counties spread right across the UK.

To date, Martin-Baker has delivered over 130 Ejection Seats to Lockheed Martin. LRIP V deliveries were completed in October 2013. Ejection Seats for LRIP VI and VII have been launched into manufacture.

More information on the JSF Programme is here: www.jsf.org.uk.

Operating Ceiling 50,000ft (15,250m)
Minimum height/Speed Zero/zero in near level attitude
Crew boarding mass range nude 46.7 Kg (103 lbs) to 111.1 kg (245 lbs)
Crew boarding mass range dressed 57.1 Kg (126 lbs) to 132.4 kg (292 lbs)
Crew size range US Government multi-variate body sizes 1 through 8
Maximum Speed for ejection 600 KCAS
Parachute type IGQ Type 6000 aeroconical 4-colour
Parachute deployment Cartridge initiated
Drogue parachute Ribbon drogue with reefing
Drogue deployment Cartridge initiated
Harness type Martin-Baker 5th Generation Integrated harness
Ejection seat operation type Catapult and Under Seat Rocket Motor
Ejection gun Twin catapult
Ejection initiation Handle on seat bucket initiates gas operated seat firing system
Automatic back-up unit Yes, mechanical system with barostatic time-release
Electronic sequencer Yes, powered by thermal batteries
Timers Time delays imposed by sequencer and ABU
Seat adjustment Up/down actuator operated 28 Vdc with 7.4" stroke
Fore/aft manual tilt mechanism adjustment
Tilt mechanism enables installation to aircraft with different bulkhead configurations
Arm restraints Yes, active system
Leg restraints Yes, passive system
Oxygen supply Automatic Backup Oxygen Supply (BOS) fitted
Seat survival kit Yes, with automatic deployment, automatic liferaft inflation and 121.5 /243 / 406MHz GPS beacon integrated into Seat
Aircrew services Seat-mounted integrated life support, with connections to oxygen supply, mic-tel, anti-g and CB demist
Separate Seat interface to HMD
Canopy jettison No
Canopy fracturing system Yes
Interseat sequencing system Not applicable as single Seat aircraft only
Auto eject system (AES) Yes, active on STOVL variant only
  • F-35 Lightning II (All variants)
  • The seat firing handle pulled/Auto eject initiated (STOVL only) causing seat initiation cartridges to fire
  • Canopy fracturing initiated
  • Neck Protection Device (NPD) primary inflation
  • Harness retraction unit operated
  • Thermal batteries initiated, sequencer powered up
  • Primary catapult cartridge fires
  • Top latches disengage
  • Seat moves up guide rails, secondary catapult cartridges fire
  • Back-up oxygen supply activated
  • IFF/Emergency location transmitter triggered
  • Automatic backup unit (ABU) initiated
  • Underseat rocket motor initiated
  • Leg and arm restraints operated
  • Start switches operated
  • NPD secondary inflation
  • End of catapult stroke
  • Backup oxygen supply continues

MODE 1

  • Drogue deployment unit operates
  • Sequencer commences environmental sensing
  • Sequencer commences parachute deployment time
  • Sequencer initiates parachute deployment. Lower bridle release cartridge fires, followed by upper bridle release cartridge releasing the drogue parachute
  • Backup oxygen supply continues

MODE 2

  • Drogue deployment unit operates
  • Sequencer senses conditions below 8000ft between 175 - 240 KEAS

KEAS

  • Sequencer initiates parachute deployment
  • Drogue stabilises and decelerates seat
  • Lower bridle release cartridge then upper bridle release cartridge fire after delay
  • determined by airspeed releasing the drogue parachute
  • Backup oxygen supply continues

MODE 3

  • Sequencer senses conditions below 8000 ft above 240 KEAS
  • Drogue deployment unit operates
  • Drogue stabilises and decelerates seat
  • If airspeed safe, sequencer initiates parachute deployment
  • If airspeed unsafe, parachute deployment delayed for pre-set time
  • Lower bridle release cartridge fires after delay, pitches seat onto its back
  • Upper bridle release cartridge fires after delay releasing the drogue parachute
  • Backup oxygen supply continues

MODE 4

  • Sequencer senses conditions 8000ft to 18000ft above 155 KEAS
  • Drogue deployment unit operates
  • Drogue stabilises and decelerates seat
  • If airspeed safe, sequencer initiates parachute deployment
  • If airspeed unsafe, parachute deployment delayed for pre-set time
  • Lower bridle release cartridge fires after delay, pitches seat onto its back
  • Upper bridle release cartridge fires after delay releasing the drogue parachute
  • Backup oxygen supply continues

MODE 5

  • Drogue deployment unit operates
  • Sequencer senses high altitude
  • Sequencer selects high drogue mode
  • Drogue stabilises and decelerates seat
  • Sequencer computes parachute deployment time
  • Backup oxygen supply continues
  • Seat descends stabilised by drogue
  • Sequencer continues to sense altitude
  • Backup oxygen supply continues
  • At 18,000ft sequencer initiates parachute deployment
  • Lower bridle release cartridge fires, followed by upper bridle release cartridge releasing the drogue parachute
  • Backup oxygen supply continues
  • Sequencer fires harness release cartridge
  • Upper and lower harness locks released
  • Negative-g lock released
  • Arm and leg restraint lines cut
  • Inflated parachute pulls aircrew from seat
  • Seat survival kit (SSK) released
  • Automatic Liferaft Inflation Unit (ALIU), personal locator beacon and automatic deployment unit armed
  • Parachute container pulled clear by auxiliary drogue
  • Aircrew descends on parachute
  • SSK releases after delay, lowered below aircrew
  • Liferaft automatically inflated by ALIU when immersed in water
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