Fluid-Circulation Duct Support for Vibration and Thermal Movement
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Solution Overview
Problem
Conventional fluid-circulation ducts used in aeronautics and space sectors face challenges due to their length, dynamic stresses, and thermomechanical displacements, leading to unacceptable dynamic displacements and potential damage.
Innovation Solution
A supporting device comprising a link with curved end parts and fastening links, which allows for the support of fluid-circulation ducts in two separate zones, increasing the first natural frequency and reducing dynamic displacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional hoses are used to connect engine parts or launcher parts, then the duct can accommodate thermomechanical displacements and engine movements, but the first natural frequency becomes too low causing large dynamic displacements that are unacceptable in operation
Solution Approach 1:
The supporting device divides support into two separate zones along the duct length, with each zone having its own supporting link end part. This segmentation increases the first natural frequency while maintaining adaptability to displacements through the sliding mechanism of connecting elements.
Solution Approach 2:
The connecting elements are designed to allow sliding of links through them, creating a dynamic support system that adapts to thermomechanical displacements and engine movements while maintaining proper support frequency characteristics.
2Length of moving object
If the duct length is increased to connect distant components, then the duct can accommodate various engine and launcher configurations, but dynamic displacements become excessively large under operating conditions
Solution Approach 1:
By dividing the support into two separate zones along the duct length, the device effectively creates multiple support points that reduce the span between supports, thereby reducing dynamic displacements even for long ducts connecting distant components.
Solution Approach 2:
The supporting link uses a three-dimensional configuration with intermediate parts connecting end parts through spatial arrangement, allowing support distribution along the duct length while accommodating the long duct configuration.
3Reliability
If the duct is made more rigid to reduce dynamic displacements, then dynamic response is reduced, but the duct cannot accommodate thermomechanical displacements and engine movements
Solution Approach 1:
The connecting elements allow sliding of links through them, creating a dynamic support system that is rigid enough to control dynamic displacements while flexible enough to accommodate thermomechanical displacements and engine movements through the sliding mechanism.
Data Source
AI summary
A three-point propulsion system of an orbital deployment space module for at least one satellite including: chassis including exactly three first housings shaped to each receive a propulsion unit and at least one second housing shaped to receive a tank, at least one liquid fuel tank disposed in a second housing, and exactly three propulsion units, each propulsion unit being disposed in one of the first housings, and each propulsion unit including at least one thruster.