Aircraft Window Shade with Enclosed Venetian Blinds
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Solution Overview
Problem
Venetian-blind window shades for aircraft are unsuitable due to the curved shape of aircraft windows and movement during turbulence, leading to unreliable, rough operation and inability to direct light effectively.
Innovation Solution
An enclosed venetian-blind shade system with a pulley assembly for adjustable pitch, a spring-loaded handle assembly for secure positioning, and a carriage assembly for stability, allowing vertical motion and light direction while preventing unwanted movement during turbulence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a venetian-blind window shade is used in an aircraft, then light direction control is improved, but reliability deteriorates due to curved window shape and turbulence movement
Solution Approach 1:
The window shade is divided into multiple independent blinds that can be individually positioned and angled. Each blind is a separate element that can be controlled independently, allowing the system to adapt to curved window surfaces and maintain stability during turbulence while still providing effective light direction control.
Solution Approach 2:
The blind angles and positions are made dynamically adjustable through control mechanisms that allow real-time modification of each blind's orientation. This dynamic capability enables the system to respond to changing conditions such as aircraft movement and turbulence, maintaining both reliability and light direction functionality.
2Adaptability or versatility
If a venetian-blind shade system is installed, then light direction capability is improved, but device complexity increases
Solution Approach 1:
The control mechanisms are designed to perform multiple functions: adjusting blind positions, changing blind angles, and securing the shade assembly. By making these components multi-functional, the system achieves versatile light direction capability without proportionally increasing overall complexity.
Solution Approach 2:
The blinds are nested within a frame structure that provides support and guidance. The control mechanisms are integrated within the blind assembly itself, with angle adjustment components nested within position adjustment components. This nested arrangement reduces overall system complexity while maintaining full functionality.
3Ease of operation
If the shade is made movable for operation, then ease of operation is improved, but stability during turbulence deteriorates
Solution Approach 1:
The shade system includes pre-positioning features and preliminary securing mechanisms that prepare the blinds for stable operation before turbulence occurs. Control mechanisms are pre-configured to lock into specific positions, and the frame structure includes pre-installed guide elements that ensure proper alignment and stability when the shade is deployed.
Solution Approach 2:
The blind assembly includes self-locking features and automatic positioning mechanisms that maintain stability without requiring continuous external input. Once positioned, the system self-secures through friction elements, spring-loaded locks, or magnetic retention, maintaining stability during turbulence while remaining easily adjustable when needed.
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
The system provides reliable, smooth operation and effective light direction into the aircraft cabin, preventing unwanted shade movement during turbulence by using a pulley assembly for pitch adjustment and a stable carriage assembly.
Implementation Method 1
a pulley assembly for directing light through the window
Implementation Method 2
a tab for releasing the biased rod from one of the plurality of holes such that the handle assembly may be raised/lowered
Data Source
AI summary
An enclosed venetian-blind shade for a window includes a plurality of blinds with an adjustable pitch, a transparent pane and a reveal arranged in front of the blinds that enclose one side of the blinds, and a handle assembly to move and secure the blinds in place. An aircraft window shade includes a plurality of blinds coupled to a wire loop, a drive shaft with a gear coupled to the wire loop, and a rotatable dial that interconnects with the gear such that rotation of the dial alters a pitch of the blinds. A window shade system for directing and blocking light from an aircraft window includes a plurality of blinds coupled to a pulley assembly for adjusting a pitch of the blinds, a handle assembly for raising/lowering the blinds, and a carriage assembly for securing the blinds.