Remote Aircraft Door Closing System via Screw Coupling
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Solution Overview
Problem
Aircraft door mechanisms do not allow for remote closure after disembarkation, as the closing mechanism is inaccessible to individuals not on board the aircraft.
Innovation Solution
A remote closing and opening system for aircraft doors, featuring a closing and opening device with a screw-coupling system, a locking and unlocking device, and a control device that enables remote operation of the door mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual closing mechanism is used for the door, then the door can be closed by crew members on board, but the closing mechanism becomes inaccessible to people not on board the aircraft
Solution Approach 1:
The patent introduces a control device as an intermediary system that receives remote commands and transmits them to the closing mechanism. This mediator enables ground personnel to operate the door without physical access to the traditional manual closing mechanism, resolving the contradiction between ease of operation and adaptability.
Solution Approach 2:
The patent replaces the purely mechanical manual closing system with an electromechanical system that incorporates remote control capabilities. By substituting the direct mechanical operation with an automated control system, the door closing function becomes accessible to users not on board the aircraft.
2Adaptability or versatility
If the closing mechanism is made accessible to ground personnel, then remote operation becomes possible, but the system complexity increases
Solution Approach 1:
The patent divides the door control system into separate functional modules: a control device for receiving commands, a transmission system for communicating commands, and the existing closing mechanism. This segmentation allows the remote operation capability to be added as an independent module without redesigning the entire closing system, thereby managing complexity.
Solution Approach 2:
The control device is designed to perform multiple functions: receiving remote commands, processing closing/opening operations, and coordinating with the existing door mechanism. By making the control device multi-functional, the system achieves remote operation capability without proportionally increasing overall system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables an aircraft door to be remotely closed or opened and locked or unlocked by a user not on board the aircraft, addressing the limitation of inaccessible closing mechanisms.
Implementation Method 1
a screw-coupling system including: a guide screw having a longitudinal rotation axis, the guide screw being designed to rotate about the longitudinal rotation axis thereof, and a lug coupling screwed to the guide screw, the lug coupling being designed to move in translation along the guide screw when the guide screw rotates
Data Source
AI summary
The system includes a closing module removably fastened to one end of the articulated arm of the door with which a door leaf is articulated, a closing module removably fastened to a structure rigidly connected to the door frame and a locking device removably fastened to the articulated arm. The closing module is able to alternately pull the closing module towards itself to move the door leaf into the closed position, and to move the closing module away from itself to move the door leaf into the open position. The locking device allows the locking lever to be moved alternately into the unlocked position to unlock the door leaf and into the locked position to lock the door leaf. The system enables the door of the aircraft to be closed remotely.