Access door for possible use with a helicopter fuel tank

摘要

Systems for improved access door assemblies. In particular, disclosed are boltless/screwless access door assemblies with a radial sealing mechanism. In some embodiments, the access door assembly includes a shoulder configured to withstand interior stresses and a retaining strip configured to withstand exterior stresses. The access door assembly is also configured to be opened when the retaining strip is released.

主权项

1. An access door assembly configured to seal an interior of a helicopter fuel tank from areas external to the fuel tank, the access door assembly comprising:
a door; a ring; a radial seal that extends substantially around a circumference of the access door assembly to form an air and fuel tight seal between the door and the ring; a first component configured to absorb stresses acting on the access door assembly from the interior of the helicopter fuel tank; and a second component configured to absorb stresses acting on the access door assembly from the external areas, wherein the second component is at least one retaining strip coupled to a release mechanism, wherein each of the at least one retaining strips is flexible and is configured to be received within a channel of the door or the ring.