Every improvement solved one problem and uncovered another
Once low-altitude escape improved, other dangers became more important.
Canopy clearance was one.
A pilot cannot eject through a solid canopy unless the aircraft and seat are designed to make a path.
Some aircraft jettison the canopy before the seat fires.
Others use miniature explosive cord or similar systems to fracture the canopy.
Some seats incorporate structures designed to break through the material.
Timing is critical.
The canopy must be gone or sufficiently weakened before the pilot reaches it.
Another problem involves the pilot's legs.
At high speed, airflow can catch a leg and force it outward violently.
Later seats introduced leg-restraint systems intended to bring the legs into safer positions during the initial phase.
The arms can create similar difficulties.
The head and neck present their own challenges.
Modern helmets are protective, but their mass can increase loads during high-speed ejection.
A head that moves violently under acceleration may place dangerous stress on the neck.
Seat designers therefore increasingly treat the pilot not as one solid mass but as a collection of body parts that have to be controlled through the escape.
The conceptual foundation was already visible in Lynch's face screen.
Posture was part of the machine.
High speed created dangers even after the aircraft had been cleared
Clearing the tail does not mean the pilot is safe.
At high speed, exposure to airflow can itself cause serious injury.
The pressure can damage soft tissue.
Limbs can be injured.
Equipment can be torn away.
The body may decelerate rapidly after leaving the aircraft.
Then the parachute creates another major change in speed.
The entire sequence is therefore an exercise in managing energy.
The aircraft may be moving hundreds of miles per hour.
The pilot must ultimately reach the ground at a survivable descent rate.
Every stage removes part of that energy.
The seat creates upward velocity.
The drogue controls orientation and begins slowing the system.
The main parachute removes far more speed.
The landing absorbs what remains.
The challenge is preventing any individual stage from changing the velocity so violently that the human body cannot tolerate it.
Lynch's experiment was one of the earliest British demonstrations that this transformation could be managed successfully.
The Meteor remained part of the ejection story long after the fighter became old
Aircraft technology advanced rapidly after World War II.
The Meteor eventually became obsolete as a front-line fighter.
Faster jets replaced it.
Supersonic fighters followed.
Yet Martin-Baker continued using specially modified Meteors as ejection-test aircraft.
The reason was practical.
A dedicated flying test platform was valuable even if the aircraft itself no longer represented modern combat performance.
Martin-Baker reports that its test capabilities have included more than 800 airborne ejection tests using two specially modified Meteor aircraft.
This creates one of the more unusual continuities in aviation history.
A jet designed during World War II helped test survival systems for aircraft generations younger than itself.
The fighter became old.
The problem it helped solve remained modern.
Ground testing became far more sophisticated than Lynch's first tower
Martin-Baker eventually built extensive testing infrastructure.