Aircraft Seat Backrest Parachute Integration
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Solution Overview
Problem
Existing sitting-type lifesaving parachutes for aircraft seats cause pilot fatigue due to shoulder pressure, can get hooked with cabin devices, and hinder rapid emergency egress due to pack placement.
Innovation Solution
An aircraft seat backrest with a quick-release mechanism and back-type lifesaving parachute integration, where the parachute pack is secured on a back plate assembly, allowing for easy detachment and reducing shoulder pressure and hooking risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lifesaving parachute pack is placed in the seat pan and the lifesaving straps are worn on the pilot's body, then the pilot can be secured for parachuting, but the pilot's shoulder is pressed causing fatigue during long-time flight
Solution Approach 1:
The patent inverts the conventional sitting-type parachute configuration by placing the parachute pack on the backrest instead of in the seat pan, and positioning the straps on the back rather than the front body. This inversion moves the pressing force from the shoulder area to the broader back area, significantly reducing shoulder pressure and fatigue while maintaining effective restraint for parachuting.
2Ease of operation
If the lifesaving parachute pack is placed in the seat pan, then the pilot can access it, but it may hook with other devices in the cabin when the pilot moves rapidly during emergency
Solution Approach 1:
The patent extracts the parachute pack from the seat pan environment and relocates it to the backrest structure. This extraction removes the source of potential hooking problems, as the pack is now positioned on the backrest where it cannot interact with cabin devices during rapid movement, while the straps remain accessible for the pilot to don quickly.
3Reliability
If the lifesaving parachute pack is connected to the pilot's body in the conventional position, then the pilot can be restrained, but it affects the power generated when the pilot needs to rapidly move, delaying emergency off-plane time
Solution Approach 1:
The patent inverts the strap positioning from front-body attachment to back attachment. This allows the pilot to don the straps more quickly by accessing them from behind the backrest, and the restraint force is applied to the back rather than the front, reducing interference with rapid forward movement during emergency egress.
4Reliability
If the back plate is permanently fixed to the backrest body, then the parachute pack is securely held, but the seat cannot be quickly reconfigured or removed for maintenance
Solution Approach 1:
The patent implements a dynamic attachment system with quick-release mechanisms that allow the back plate to transition between securely fixed and easily removable states. The locking pieces with spring-loaded locking pins provide secure attachment during normal use, while enabling rapid release when reconfiguration or maintenance is needed, adapting to different operational requirements.
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 quick cabin movement and emergency egress without shoulder pressure and reduces the risk of hooking, facilitating efficient use in aircraft seats for pilots and operators.
Implementation Method 1
a spring enabling the locking pin to press an end part of the lock shell
Implementation Method 2
lifesaving parachute pack
Data Source
AI summary
An aircraft seat backrest with a lifesaving function, including a backrest body and a back plate assembly, wherein a containing cavity is arranged in a front face of the backrest body, the back plate assembly includes a back plate covering the containing cavity and a lifesaving parachute pack that is arranged on a back face of the back plate and contained in the containing cavity, the back plate is fixedly connected with the backrest body through a quick release mechanism in a quickly separable manner, lifesaving straps of the lifesaving parachute pack pass through strap through holes in the back plate, and an occupant leans against the back plate and is connected with the back plate and the lifesaving parachute pack through the lifesaving straps when riding.