The high level vibroacoustic environment, typical for launch vehicles, can result in excessive loads and fatigue problems for space payloads. Extensive analysis and testing requirements are imposed on the payload developer to ensure the flight worthiness of the payload element. To alleviate these requirements and reduce the long lead times involved in analytical verification, a soft ride capability was proposed for transporting experiment payloads to the Space Station. This paper presents the results of a study of determine the feasibility of using viscoelastic treatments to suppress structure borne vibrations and provide soft-ride capability. Finite element analysis and the modal strain energy method are used to design a damping treatment for an equipment drawer with a representative payload mass. The response of the damped and undamped system to simulated launch loads are determined and compared with test results. The results showed good agreement and also confirmed the effectiveness of the damping treatment in controlling vibrations.
Soft-ride to orbit: viscoelastic treatments for launch load attenuation
Weicher Flug in die Umlaufbahn: Viskoelastische Behandlung zur Dämpfung der Startbelastung
1995
11 Seiten, 6 Bilder, 6 Tabellen, 6 Quellen
Aufsatz (Konferenz)
Englisch
Soft-Ride to Orbit: Viscoelastic Treatments for Launch Load Attenuation
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