AIRCRAFT RAMP DOOR Russian patent published in 2010 - IPC B64C1/14 

FIELD: transport.

SUBSTANCE: invention can be used in aircraft engineering and can be used for boarding/deplaning passengers and crew. Proposed ramp door comprises covered carcass, stairs made from stationary section secured on carcass inner side and rotary section pivoted to stationary section, door opening hydraulic cylinder, folding handrail made up on inner and outer sections and mechanism to open rotary section of stairs. Ramp door carcass is pivoted to airframe with the help of bracket. Aforesaid hydraulic cylinder is secured in door carcass and pivoted to via frame via bell crank. Aforesaid bracket hinge can elevate ramp door relative to airframe. Folding handrail inner section is hinged to airframe and stationary section of stairs. Outer section of folding handrail is coupled with rotary section opening mechanism representing a lever-cable mechanism arranged in ramp door carcass.

EFFECT: simplified design, higher reliability.

2 cl, 7 dwg