Novel unit in-air emergency hatchdoor

Abstract

The invention belongs to a design technology of an emergency hatchdoor of an aircraft and provides a brand new design scheme of an in-air parachute jumping emergency hatchdoor. The emergency hatchdoor is characterized in that an access door is arranged on the outer side of a fuselage, wherein the access door comprises a mouth cover of the access door, two lock holes of bolt locks are respectively arranged on the two sides of the mouth cover of the access door, two spring bolt locks are respectively arranged on each of fuselage door frames corresponding to the two sides of the mouth cover of the access door, and the spring bolt locks and the lock holes are correspondingly matched and mounted for fixing the mouth cover of the access door on the fuselage; and four steel cables are connected at the tail ends of the four spring bolt locks, each of the four steel cables is respectively connected with one end of a fan-shaped wheel fixed on the fuselage, the other ends of the four fan-shaped wheels are further connected with the four steel cables and connected with two pulley blocks, the pulley blocks comprise three pulleys and five pulleys respectively, and the pulley blocks are connected on a handle through the steel cables. The emergency hatchdoor can almost meet emergency opening of the hatchdoor in various flight attitudes at high speed and low speed; the pure mechanical manual operation is safe and reliable; the mechanism principle is clear and concise; and the scheme has very strong expansibility.

Description

technical field [0001] The invention belongs to the design technology of an emergency hatch of an aircraft, and proposes a brand-new design scheme of an emergency hatch for mid-parachute jumping. Background technique [0002] For high-speed (greater than 400 kilometers per hour) skydiving of crew members, the method that the main hydraulic system of the aircraft drives the hatch door actuator to open the hatch against the wind as the windshield device is currently used at home and abroad, which belongs to the electronically controlled hydraulic control method. Typical There are IL-76-MD and Air Police 2000 aircraft. This kind of emergency hatch has strict restrictions on skydiving. First, the system is not allowed to fail, which cannot meet the high reliability life-saving requirements; secondly, on the premise that the system does not fail, life-saving The range is limited, and the aircraft must be kept flying in a straight line, that is to say, it is basically limited to t...

AI Technical Summary

Problems solved by technology

[0002] For high-speed (greater than 400 kilometers per hour) skydiving of crew members, the method that the main hydraulic system of the aircraft drives the hatch door actuator to open the hatch against the wind as the windshield device is currently used at home and abroad, which belongs to the electronically controlled hydraulic control method. Typical There are IL-76-MD and Air Police 2000 aircraft. This kind of emergency hatch has strict restrictions on skydiving. First, the system is not allowed to fail, which cannot meet the high reliability life-saving requirements; secondly, on the premise that the system does not fail, life-saving The range is limited, and the aircraft must be kept flying in a straight line, that is to say, it is basically limited to the use of the aircraft in the event of a fire that cannot be extinguished

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