M.B. GRU-7A

One of the more complex projects that we took on in recent years, this is a Martin Baker model GRU-7A rocket ejection seat from an early F-14A Tomcat fighter jet. The frame and rail assembly hosts a complicated array of linkages, altimeters, drogue actuators, and adjustment devices that worked in unison to provide a timed and well choreographed set of motions to evac the pilot from the airframe and safely return them to earth. Partially disassembled and in disarray, we took on the task to completely rebuild the seat to suit the clients request to match their existing hangar decor while adding a feature to allow those who sit on it to be “ejected”.

A base and back spine was fabricated from sheet steel to support the entire seat, house operational components, and to make it easily mobile for social events in the facility. Small details like the wheels were not overlooked and were created using bespoke in -house machined components and ground tires to mimic the actual jet components but on a scale more suited to the project. The seat itself received a mirror polish on all major surfaces. Where possible, factory anodized components retained their finish. Where not, each individual part was either ceramic coated or re-anodized and assembled, and any missing components that could not be sourced were recreated in house. Certain parts, like the pilot leg restraints, survival kit, and belts were omitted in place of more comfortable leather cushions and shoulder harnesses.

Pull up on the canopy ejection handle and built in pneumatics and electronics provide 5” of ejection lift off the base at approximately 15MPH, a far cry from the force exerted during an actual ejection but more than enough to put a smile on those willing to do so. A rare piece of aviation history fore sure, and by far one of the more enjoyable projects were have ever had the pleasure to be a part of.