Missile Thrust Vectoring via Segmented Flow Deflectors
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Solution Overview
Problem
Current missile steering systems, such as those using aerodynamic control surfaces or orientable nozzles, are complex, expensive, and occupy significant space, making them unsuitable for small, cost-effective missiles that require control over all three axes of rotation.
Innovation Solution
A thrust vectoring system with two nozzles and three flow deflectors, where two deflectors act exclusively on one nozzle each to control pitch and roll, and a third deflector acts on both nozzles to control yaw, allowing for compact, simple, and cost-effective steering of missiles about all three axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If aerodynamic control surfaces or orientable nozzles are used for missile steering, then control precision over all three axes is improved, but device complexity and cost increase significantly
Solution Approach 1:
The control system is segmented into three independent flow deflectors, each responsible for controlling one specific axis (pitch, roll, or yaw). This segmentation allows each deflector to be simple in design while collectively providing comprehensive three-axis control, resolving the contradiction between control precision and device complexity
Solution Approach 2:
Each flow deflector serves multiple functions: they deflect jet flows to change thrust vector orientation, provide control moments for attitude adjustment, and work cooperatively to achieve three-axis stabilization. This multi-functionality reduces the need for separate complex control mechanisms for each axis
2Measurement precision
If aerodynamic control surfaces or orientable nozzles are used for missile steering, then control precision over all three axes is improved, but manufacturing cost increases
Solution Approach 1:
By dividing the control system into three simple, identical flow deflectors (each with similar blade structures), manufacturing costs are reduced through standardization and simplified production processes, while still achieving precise three-axis control through their coordinated operation
Solution Approach 2:
The flow deflectors are designed as simple, lightweight components with blade structures that can be manufactured at low cost using conventional methods, making the overall control system economically viable for mass production while maintaining adequate control precision
3Adaptability or versatility
If aerodynamic control surfaces or orientable nozzles are used for missile steering, then control capability over all three axes is improved, but space occupancy increases
Solution Approach 1:
The three flow deflectors are positioned to work in close proximity to the jet nozzle, merging their control functions into a compact arrangement at the rear of the missile. This integration allows comprehensive three-axis control capability while occupying minimal space that would not interfere with the missile's overall dimensions
4Device complexity
If simple flow deflectors are used for missile steering, then device complexity and cost are reduced, but control precision over all three axes deteriorates
Solution Approach 1:
Each flow deflector is designed with specific blade geometries and positioning optimized for its assigned axis of control. The deflectors are placed at strategic locations where they can most effectively influence the jet flow for their respective axes, ensuring precise control despite the simplicity of individual components
Solution Approach 2:
The control system incorporates feedback mechanisms that monitor the missile's attitude and adjust the positioning of the three flow deflectors accordingly. This feedback control ensures precise three-axis stabilization by continuously correcting the deflectors' positions based on actual flight conditions
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
This system enables comprehensive control over a missile's trajectory without the need for complex systems, reducing costs and space occupancy, making it suitable for small, mass-produced missiles intended for terrestrial engagements.
Implementation Method 1
a moving body propelled by jet reaction
Implementation Method 2
steering by thrust vectoring... blades act on the outlet flows of the nozzle(s) of the missile in order to control the orientation of the thrust
Data Source
AI summary
System for steering, about its axes of rotation, a moving body propelled by jet reaction, particularly a missile. The system (1) comprises two first flow deflectors (3, 4) of which one (3) is able to act exclusively on the outlet flow from one of the nozzles (17) of the moving body (M) which is provided with two jet nozzles (17, 18), and of which the other (4) is able to act exclusively on the outlet flow from the other jet nozzle (18) of said moving body (M), these two first flow deflectors (3, 4) interacting in such a way as to be able to steer the moving body (M) about two of its three axes of rotation, and a second flow deflector (5) which is able to act on the outlet flows from the two jet nozzles (17, 18), but on just one outlet flow at a time, so as to be able to steer the moving body (M) about the third of its axes of rotation.