Detachable Hypersonic Flow Deflector for Drag and Shock Control
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Solution Overview
Problem
Hypersonic flights experience increased drag due to abrupt geometry changes and disruptions in airflow, which conventional shrouds attempt to mitigate but add weight and require staging steps for removal.
Innovation Solution
A detachable flow deflector with a clip and spring mechanism that engages the vehicle body and booster engine, allowing it to slide off post-discarding the booster engine, eliminating the need for a shroud.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a hypersonic vehicle travels at hypersonic speeds, then speed is improved, but air flow separation and shock waves cause loss of lift and increase in drag
Solution Approach 1:
The deflector is divided into multiple segments (first deflector portion, second deflector portion, third deflector portion) that can independently move and adjust. This segmentation allows each portion to optimally manage different aspects of air flow control, reducing overall drag and preventing flow separation more effectively than a single rigid structure.
Solution Approach 2:
The deflector employs dynamic movement capabilities where the first, second, and third deflector portions can move relative to each other and to the vehicle body. This dynamic adjustment allows real-time optimization of air flow management during hypersonic flight, adapting to changing flight conditions to minimize drag and maintain lift.
2Device complexity
If conventional deflectors are used, then structure is simple, but they increase drag and reduce lift at hypersonic speeds
Solution Approach 1:
The deflector is divided into multiple segments (first deflector portion, second deflector portion, third deflector portion) that can independently move and adjust. This segmentation allows each portion to optimally manage different aspects of air flow control, reducing overall drag and preventing flow separation more effectively than a single rigid structure.
Solution Approach 2:
The deflector employs dynamic movement capabilities where the first, second, and third deflector portions can move relative to each other and to the vehicle body. This dynamic adjustment allows real-time optimization of air flow management during hypersonic flight, adapting to changing flight conditions to minimize drag and maintain lift.
3Ease of manufacture
If fixed deflector design is used, then manufacturing is simple, but adaptability to different flight conditions is reduced
Solution Approach 1:
The deflector employs dynamic movement capabilities where the first, second, and third deflector portions can move relative to each other and to the vehicle body. This dynamic adjustment allows real-time optimization of air flow management during hypersonic flight, adapting to changing flight conditions to minimize drag and maintain lift.
Solution Approach 2:
The multi-portion deflector structure serves multiple functions: it manages air flow separation, controls shock waves, adjusts to different flight conditions, and maintains both lift and drag optimization across various hypersonic regimes. This multi-functionality makes the system universally applicable to different flight scenarios.
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
Reduces drag and eliminates the need for staging steps by providing a smooth transition surface while maintaining lightweight operation.
Implementation Method 1
When a hypersonic vehicle travels at hypersonic speeds, shock waves are formed in front of the vehicle and air-flow separation occurs on the upper surface of the vehicle
Data Source
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AI summary
A flow deflector for an aerial vehicle system has a flow deflector body, a clip arranged in an interior of the flow deflector body, and a spring within the clip. The flow deflector body includes a first portion at a forward end shaped to engage a surface of an aerial vehicle body and a second portion at an aft end shaped to engage a surface of a booster engine. The flow deflector body can include a plurality of body segments arranged to form the flow deflector body. The clip may be configured to fit around and engage a portion of an aft flange of the aerial vehicle body. The spring can be preloaded and arranged to press on the aft flange when the clip engages the portion of the aft flange.