Accession Number : ADD001583

Title :   Mechanically Initiated Igniter.

Descriptive Note : Patent,


Personal Author(s) : Burklund,Vernon D ; Schmidt,Joseph A ; Jacobson,Michael D

Report Date : 08 Jul 1975

Pagination or Media Count : 5

Abstract : The patent relates to an igniter mechanism for a rocket motor used for towing a load or extracting an aircrew member from an aircraft. The mechanism is operated by establishing a predetermined load on a tow line that is physically attached to the rear end of a rocket motor by shearing the first element to allow rearward travel of a centrally located piston head attached to a stud. As the shaft travels rearwardly a force biases a spring loaded firing pin or pins. Whenever the rearward force exceeds a predetermined force and before the piston is limited in travel a second element shears allowing a firing pin to move forward due to loading on the firing pin springs. The pin or pins strike percussion elements with sufficient force to ignite an igniter to start burning of the rocket propellant within rocket motor housing.

Descriptors :   *Ejection seats, *Rocket igniters, *Patents, Rocket engines, Shafts(Machine elements), Pins, Ignition systems

Subject Categories : Aircraft
      Escape, Rescue and Survival

Distribution Statement : APPROVED FOR PUBLIC RELEASE