An investigation into the feasibility of using the standard Martin-Baker ejection seat systems for underwater escape from ditched aircraft
Beckman, E.; McNUTT, D.C.; Rawlins, J.S.
Aerospace Medicine 31: 715-732
1960
ISSN/ISBN: 0001-9402 PMID: 13688539 Document Number: 8253
The increase in the density of jet aircraft and the introduction of the pressurized cabins in military aircraft have increased the mortality rate from ditching accidents at sea and have therefore increased the significance of ditching to Naval aviators. The advantage to be gained by using the ejection seat system for escaping from a ditched aircraft was established by a Royal Naval pilot who escaped from his submerged, ditched aircraft by use of the ejection seat. Investigations were therefore undertaken to evaluate the use of the ejection seat as a method of escape from submerged aircraft. Idhas been determined that the acceleration and drag loads, the blast pressure, and the rapid pressure changes due to the trajectory of the seat to which a pilot would be subjected in using the Martin-Baker Mark 1, 2, 3, 4 or A.5 ejection seat-gun systems are within the human tolerance limits for an emergency escape procedure. Ejection through the canopy is also recommended for escape from submerged, ditched aircraft with frangible canopies. The inherent dangers of injury from striking the canopy when ejecting through the canopy during escape from a ditched aircraft are considered to be within the acceptable limits for a life-saving procedure.
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