Aircraft Pilot Seat Integrated Evacuation Ladder
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Solution Overview
Problem
In aircraft cockpit evacuations, pilots lack a reliable and safe means to access the evacuation hatch, often resulting in suboptimal conditions due to injury risks and poor visibility from smoke.
Innovation Solution
An integrated evacuation device within the pilot's seat, featuring a deployable ladder stored within a cover, which automatically deploys using mechanical, electrical, or hydraulic control, providing a stable access route to the hatch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no evacuation device is integrated into the seat, then the seat structure remains simple, but the pilot lacks a reliable means to access the evacuation hatch safely
Solution Approach 1:
The evacuation ladder is integrated into the pilot's seat structure, merging two previously separate functions (seating and evacuation access) into a single unified system. The ladder is stored within the seat back and deploys from the seat structure, eliminating the need for separate evacuation equipment and improving reliability without proportionally increasing complexity.
Solution Approach 2:
The evacuation ladder is nested within the seat back structure during normal operation, with the ladder folded inside the backrest. This nesting allows the evacuation device to be stored compactly within the existing seat volume, avoiding additional space requirements and reducing visual complexity while maintaining ready access during emergencies.
2Ease of operation
If the ladder is stored inside the cover, then the seat maintains a streamlined appearance, but the ladder must be quickly deployed during emergency evacuation
Solution Approach 1:
The ladder is pre-positioned within the seat back structure in a ready-to-deploy state. The locking mechanism is pre-set to release automatically or with a simple action, and the ladder is pre-oriented to extend toward the evacuation hatch. This preliminary preparation ensures rapid deployment during emergencies without requiring complex assembly or search for the equipment.
Solution Approach 2:
The ladder transitions from a static stored position within the seat back to a dynamic deployed position extending upward. The mechanism allows smooth transformation between these states, with the ladder moving from a compact nested configuration to an extended functional configuration, maintaining aesthetic appearance during storage and providing immediate access during evacuation.
3Volume of stationary object
If the ladder is telescopic with nested tubes, then the storage space is reduced, but the locking mechanism must reliably prevent accidental deployment
Solution Approach 1:
The ladder consists of multiple telescopic tubes nested within each other, with the inner tubes containing the outer tubes in a compact arrangement. This nesting reduces the storage volume to a fraction of the extended size, allowing the ladder to fit within the seat back structure. The nested design maintains structural integrity while minimizing space requirements during storage.
Solution Approach 2:
The locking mechanism utilizes the weight and position of the ladder tubes themselves to engage and disengage locks. When the ladder is extended, gravity and structural forces automatically engage the locking lugs at appropriate positions. The system self-regulates deployment and locking without requiring external power or complex control systems, enhancing reliability through passive mechanical safety.
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
Facilitates safe and efficient evacuation by offering a solid, easily accessible ladder, reducing injury risks and improving visibility through smoke, enhancing overall evacuation conditions.
Implementation Method 1
At least one spring is inserted inside the uprights such that it is compressed when the locking lug is in place in order for the release of the lug to enable the spring to relax, thereby causing the sliding of the uprights relative to one another
Implementation Method 2
the release of the lug to enable the spring to relax, thereby causing the sliding of the uprights relative to one another
Implementation Method 3
The articulation respectively of the headrest and of the ladder on the back comprises at least one torsion spring in compression which entrains the headrest in rotation when the locking system releases the headrest and the ladder
Data Source
AI summary
A pilot's seat offering an evacuation device. The seat comprises a ladder fixed to the rear of the back and covered by a detachable cover associated with the seat and deployable between a storage position retracted inside the cover and a deployed evacuation position, in which case the cover is detached. Thus, the evacuation device is incorporated harmoniously into the seat which offers a solid base for the evacuation ladder.