Author:
Pilch Adam,Kamisinski Tadeusz,Rataj Mirosław,Polak Szymon
Abstract
Abstract
Ariane 5 rocket produces very high sound pressure levels during launch, what can influence structures located in the fairing. To reduce risk of damage, launch in vacuum conditions is preferred for noise sensitive instruments. In Wide Filed Imager (WFI) project, the main part of the filterwheel assembly is an extremely thin (~240 nm) filter of large area (170×170 mm), very sensitive to noise and vibrations. The aim of this study was to verify numerical calculations results in anechoic measurements. The authors also checked the influence of WFI geometry and sound absorbing material position on sound pressure level (SPL) affecting the filter mounted inside the assembly. Finite element method (FEM) simulations were conducted in order to obtain noise levels in filter position during Ariane 5 rocket launch. The results will be used in designing of WFI filterwheel assembly and endurance of the filter during launch verification.
Subject
Acoustics and Ultrasonics
Reference8 articles.
1. Reduction of supersonic jet noise - Application to the Ariane launch vehicle In th Aeroacoustics Conference and Exhibit;Gely,2000
2. The filter and calibration wheel for the ATHENA wide field imager Proceedings SPIE - Space Telescopes and Ultraviolet to den Herder;Rataj;Instrumentation Gamma,2016
3. The optical blocking filter for the ATHENA wide field imager : Ongoing activities towards the conceptual design Proceedings of SPIE - The International Society for Optical;Barbera;Engineering
4. The Characteristic of Sound Reflections from Curved Reflective Panels of;Szelag;Archives Acoustics,2014
5. - acoustic study of Ariane V launcher during lift - off In INTER - and NOISE - CON Congress and Conference Proceedings;Defosse;NOISE,2000
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献