System for preventing the automatic opening of an improperly closed and locked aircraft door

US5480109A · kind A · utility

Assignee

• Deutsche Aerospace Airbus GmbH · DE

Inventors

• Bernd Klein · Gerolzhofen, DE
• Wolfgang Mueller · Lustenau, AT

Key dates

• Filing date: Mar 18, 1994
• Grant date: Jan 2, 1996
• Expiry date: Mar 18, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S292/65
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A system for preventing the automatic or inadvertent opening of an aircraft door or access hatch that has not been closed and locked properly provides an increase in the overall flight safety of aircraft. The system includes a door monitoring system (1), which is connected to at least one of a cabin pressure control arrangement (4), a cabin temperature control arrangement (5), and an air tap system control arrangement (36). The door monitoring system (1) provides a signal indicating if at least one door or access hatch is not properly closed and locked. The controllers (4, 5, 36) receive the door monitor signal at respective inputs and also receive information necessary for determining the current flight configuration of the aircraft from various other aircraft systems, such as a landing gear control arrangement or an engine monitor arrangement. The controllers (4, 5, 36) evaluate the several input signals and provide output signals for controlling at least one of a cabin air venting valve, a cabin air flow control valve, and a tap air shut-off valve.