Forward Extraction Force Transfer Coupling for 88-Inch Aircraft
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional extraction force transfer coupling systems are not capable of practical operation on 88 inch wide aircraft due to their configuration and furniture disposition, which prevents safe aerial delivery of cargo.
Innovation Solution
A forward extraction force transfer coupling system with a housing, control rod, cable, crank, actuator arm, and drop arm that pivot orthogonally to ensure safe parachute deployment by preventing inadvertent actuation during aircraft loading and allowing controlled rotation for parachute opening during delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional extraction force transfer coupling system is used, then it works well on 108 inch wide cargo aircraft, but it is not capable of practical operation on 88 inch wide aircraft due to aircraft configuration and furniture disposition
Solution Approach 1:
The device is divided into functionally independent segments: the housing mounted on the forward edge portion, the drop arm with orthogonal pivot axis for safety, the actuator arm for cable actuation, and the crank mechanism. This segmentation allows each component to be optimized for the specific 88 inch aircraft configuration while maintaining overall system functionality.
Solution Approach 2:
The drop arm introduces a new orthogonal dimension of rotation perpendicular to the actuator arm's rotation plane. This dimensional change creates a safety interlock that prevents inadvertent actuation while allowing controlled operation, specifically addressing the constraints of 88 inch aircraft configurations.
2Ease of operation
If the actuator arm is freely rotatable, then it can actuate the extraction force transfer coupling for parachute opening, but it may be inadvertently actuated during aircraft loading
Solution Approach 1:
The drop arm is configured to preliminarily block the actuator arm's rotation path during aircraft loading operations. This preliminary anti-action prevents inadvertent actuation before it can occur, while allowing the intended actuation sequence during controlled parachute deployment.
Solution Approach 2:
The orthogonal pivot mechanism of the drop arm performs a preliminary safety check before allowing actuator arm rotation. The drop arm must first be in the correct position, establishing a preliminary condition that prevents accidental operation while enabling intentional deployment.
3Productivity
If the extraction parachute is used alone, then it can extract the platform from the aircraft, but it is not sufficiently large or properly oriented to effect safe landing of the cargo
Solution Approach 1:
The extraction force transfer coupling dynamically transitions the system from extraction mode to suspension mode. The mechanism allows the extraction parachute to initially extract the platform, then controlledly transfers force to deploy larger suspension parachutes for safe landing, adapting to different operational phases.
Data Source
AI summary
An extraction force transfer coupling device is particularly adapted for use with certain cargo aircraft systems for aerial delivery of a load. The extraction force transfer coupling device employs a drop arm which prevents inadvertent actuation of the actuator arm. Prior to aerial delivery, the actuator arm is obstructed by the drop arm. When the platform is forwardly extracted from the aircraft, the drop arm slides along and eventually disengages from the aircraft floor which eventually results in actuation of the cable release to provide for opening of a suspension parachute.