Low-Profile Shock Isolating Mount for Payload Vibration Damping
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Solution Overview
Problem
Existing mounting systems for payloads, such as servo motors in missiles, fail to adequately isolate payloads from shock loads, potentially damaging the payload during operation.
Innovation Solution
A low-profile shock isolating payload mounting assembly is introduced, comprising a first mount, a second mount with inclined surfaces, and an isolator with inner and outer frames and pads, which dampens vibrations and shocks by capturing isolator support legs between inclined surfaces and rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid coupling is used to secure the payload to the structure, then the payload is securely mounted to prevent uncontrolled movement, but shock loads are transmitted between the mounting system and the payload, potentially damaging the payload
Solution Approach 1:
The patent introduces an isolator as an intermediary component between the first mount and second mount. This isolator comprises an inner frame and an outer frame that physically separate the payload mounting system from the structure, thereby mediating the transmission of shock loads while maintaining secure mounting functionality
Solution Approach 2:
The isolator changes the mechanical parameters of the mounting system by introducing compliance through the inner and outer frames. This allows the system to absorb and attenuate shock loads dynamically while maintaining secure payload attachment, transforming the rigid coupling into a compliant mounting system
2Object-affected harmful factors
If a conventional isolator design is used, then shock isolation is provided, but the profile height is excessive and bonded isolator pads are required
Solution Approach 1:
The isolator design nests the inner frame within the outer frame, creating a compact configuration where the inner frame and its support legs are contained within the boundaries of the outer frame. This nesting arrangement achieves effective shock isolation while minimizing the overall profile height of the isolator
Solution Approach 2:
The patent replaces bonded isolator pads with a mechanical isolator system comprising inner and outer frames with support legs. This substitution eliminates the need for bonding adhesives while achieving shock isolation through the mechanical compliance of the framed structure, and allows for a more compact profile height
3Object-affected harmful factors
If the second mount is made movable relative to the first mount, then shock attenuation is improved, but the mounting system complexity increases
Solution Approach 1:
The second mount is designed to be movable relative to the first mount, allowing dynamic adjustment and movement to accommodate shock loads. This dynamic capability enables the mounting system to attenuate shocks effectively while maintaining a relatively simple overall structure through controlled degrees of freedom
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 solution effectively isolates payloads from shock and vibration, reducing the risk of damage and enhancing operational reliability while maintaining a low profile and not relying on bonded isolator pads.
Implementation Method 1
The outer frame operates to capture the at least one isolator support leg between the at least one rail of the outer frame and the at least one inclined surface of the second mount
Implementation Method 2
an isolator with inner and outer frames and pads, which dampens vibrations and shocks
Data Source
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AI summary
A low-profile shock isolating payload mounting assembly comprises a first mount, a second mount, and an isolator. The second mount is movable relative to the first mount and comprises a riser comprising an inclined surface. The isolator comprises an inner frame and an outer frame. The inner frame couples to the first mount and comprises a platform and a leg extending from the platform. The leg is inclined to be complementary to the inclined surface of the second mount. The outer frame couples to the second mount and comprises an opening for accessing the platform of the inner frame. The rail is inclined so as to be complementary to the leg to capture the leg between the rail of the outer frame and the inclined surface of the second mount. The isolator operates to dampen vibrations and shocks propagating between the first and second mounts.