Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire
A rocket’s turbulent jet radiates intense acoustic waves, which are an acoustic load for structural components like payload, launch structure, and rocket avionics, and impact communities near the launch site. Therefore, a careful characterization of the acoustic field produced by a rocket engine can...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-08-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/15/9041 |
| _version_ | 1827731399144112128 |
|---|---|
| author | Giovanni Fasulo Luigi Federico Adolfo Sollazzo Luciano De Vivo Roberto Citarella |
| author_facet | Giovanni Fasulo Luigi Federico Adolfo Sollazzo Luciano De Vivo Roberto Citarella |
| author_sort | Giovanni Fasulo |
| collection | DOAJ |
| description | A rocket’s turbulent jet radiates intense acoustic waves, which are an acoustic load for structural components like payload, launch structure, and rocket avionics, and impact communities near the launch site. Therefore, a careful characterization of the acoustic field produced by a rocket engine can provide crucial information during the design phase. In particular, this deals with improving the understanding of the acoustics of low-thrust hybrid rocket engines. Since an accurate jet noise detection around the entire launch site is time-consuming and extremely cost-prohibitive, a fast and reliable predictive tool is invaluable. For this purpose, a semi-empirical model was employed, using the exhaust plume property and geometric characteristics of the nozzle as input. Experimental data collected during a firing test campaign, conducted in the framework of HYPROB-NEW project by the Italian Aerospace Research Center, were decisive to discuss the validity of the model also for low-thrust hybrid propulsion and support the goodness of the noise curves and metrics estimated for nearby regions and provide considerations about the implications of engine geometric characteristics on noise emissions. |
| first_indexed | 2024-03-11T00:31:45Z |
| format | Article |
| id | doaj.art-d89ee6d370084c6b92ab8cdfe3caa77c |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T00:31:45Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-d89ee6d370084c6b92ab8cdfe3caa77c2023-11-18T22:40:54ZengMDPI AGApplied Sciences2076-34172023-08-011315904110.3390/app13159041Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static FireGiovanni Fasulo0Luigi Federico1Adolfo Sollazzo2Luciano De Vivo3Roberto Citarella4Italian Aerospace Research Centre (C.I.R.A.), 81043 Capua, CE, ItalyItalian Aerospace Research Centre (C.I.R.A.), 81043 Capua, CE, ItalyItalian Aerospace Research Centre (C.I.R.A.), 81043 Capua, CE, ItalyItalian Aerospace Research Centre (C.I.R.A.), 81043 Capua, CE, ItalyDepartment of Industrial Engineering, University of Salerno, 84084 Fisciano, SA, ItalyA rocket’s turbulent jet radiates intense acoustic waves, which are an acoustic load for structural components like payload, launch structure, and rocket avionics, and impact communities near the launch site. Therefore, a careful characterization of the acoustic field produced by a rocket engine can provide crucial information during the design phase. In particular, this deals with improving the understanding of the acoustics of low-thrust hybrid rocket engines. Since an accurate jet noise detection around the entire launch site is time-consuming and extremely cost-prohibitive, a fast and reliable predictive tool is invaluable. For this purpose, a semi-empirical model was employed, using the exhaust plume property and geometric characteristics of the nozzle as input. Experimental data collected during a firing test campaign, conducted in the framework of HYPROB-NEW project by the Italian Aerospace Research Center, were decisive to discuss the validity of the model also for low-thrust hybrid propulsion and support the goodness of the noise curves and metrics estimated for nearby regions and provide considerations about the implications of engine geometric characteristics on noise emissions.https://www.mdpi.com/2076-3417/13/15/9041rocket engine noisejet noisehybrid propulsionacoustic coupling |
| spellingShingle | Giovanni Fasulo Luigi Federico Adolfo Sollazzo Luciano De Vivo Roberto Citarella Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire Applied Sciences rocket engine noise jet noise hybrid propulsion acoustic coupling |
| title | Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire |
| title_full | Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire |
| title_fullStr | Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire |
| title_full_unstemmed | Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire |
| title_short | Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire |
| title_sort | hybrid rocket engine noise measurements and predictions of acoustic environments from horizontal static fire |
| topic | rocket engine noise jet noise hybrid propulsion acoustic coupling |
| url | https://www.mdpi.com/2076-3417/13/15/9041 |
| work_keys_str_mv | AT giovannifasulo hybridrocketenginenoisemeasurementsandpredictionsofacousticenvironmentsfromhorizontalstaticfire AT luigifederico hybridrocketenginenoisemeasurementsandpredictionsofacousticenvironmentsfromhorizontalstaticfire AT adolfosollazzo hybridrocketenginenoisemeasurementsandpredictionsofacousticenvironmentsfromhorizontalstaticfire AT lucianodevivo hybridrocketenginenoisemeasurementsandpredictionsofacousticenvironmentsfromhorizontalstaticfire AT robertocitarella hybridrocketenginenoisemeasurementsandpredictionsofacousticenvironmentsfromhorizontalstaticfire |