Measuring Nozzle Erosion in a Hybrid Rocket Motor with Ultrasound

2016 ◽  
Author(s):  
Pavan Narsai ◽  
Krishna Venkataraman ◽  
Keith Javier Stober ◽  
Brian J. Cantwell
Keyword(s):  
Rocket Motor ◽  
Hybrid Rocket ◽  
Hybrid Rocket Motor ◽  
Nozzle Erosion

scholarly journals Comprehensive Data Reduction for N2O/HDPE Hybrid Rocket Motor Performance Evaluation

Aerospace ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 45 ◽  
Author(s):  
Kamps ◽  
Sakurai ◽  
Saito ◽  
Nagata
Keyword(s):  
Data Reduction ◽  
Rocket Motor ◽  
Hybrid Rocket ◽  
Nozzle Throat ◽  
Transient Time ◽  
Mass Consumption ◽  
Fuel Mass ◽  
Hybrid Rocket Motor ◽  
Novel Approach ◽  
Nozzle Erosion

Static firing tests of a hybrid rocket motor using liquid nitrous oxide (N2O) as the oxidizer and high-density polyethylene (HPDE) as the fuel are analyzed using a novel approach to data reduction that allows histories for fuel mass consumption, nozzle throat erosion, characteristic exhaust velocity (c*) efficiency, and nozzle throat wall temperature to be determined experimentally. This is done by firing a motor under the same conditions six times, varying only the burn time. Results show that fuel mass consumption was nearly perfectly repeatable, whereas the magnitude and timing of nozzle throat erosion was not. Correlations of the fuel regression rate result in oxidizer port mass flux exponents of 0.62 and 0.76. There is a transient time in the c* efficiency histories of around 2.5 s, after which c* efficiency remains relatively constant, even in the case of excessive nozzle throat erosion. Although nozzle erosion was not repeatable, the erosion onset factors were similar between tests, and greater than values in previous research in which oxygen was used as the oxidizer. Lastly, nozzle erosion rates exceed 0.15 mm/s for chamber pressures of 4 to 5 MPa.

Transient investigation of nozzle erosion in a long-time working hybrid rocket motor

2021 ◽  
pp. 106978
Author(s):  
Lingfei He ◽  
Hui Tian ◽  
Ruipeng Yu ◽  
Sheng Zhao ◽  
Pengfei Wang ◽  
...  
Keyword(s):  
Rocket Motor ◽  
Hybrid Rocket ◽  
Hybrid Rocket Motor ◽  
Long Time ◽  
Nozzle Erosion

Validation of the Theoretical Model for Dimensioning the Propellant Characteristics in a Laboratory Scale Hybrid Rocket Motor Bench

2020 ◽  
Author(s):  
Rodrigo De Melo Silveira ◽  
Isabel Matos ◽  
Lia Pimont ◽  
Paula Cristina Fernandes ◽  
Leonardo Henrique Gouvêa ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Rocket Motor ◽  
Laboratory Scale ◽  
Hybrid Rocket ◽  
Hybrid Rocket Motor

Vortex Combustion in a Lab-Scale Hybrid Rocket Motor

2016 ◽  
Author(s):  
Christian Paravan ◽  
Jakub Glowacki ◽  
Stefania Carlotti ◽  
Filippo Maggi ◽  
Luciano Galfetti
Keyword(s):  
Rocket Motor ◽  
Hybrid Rocket ◽  
Hybrid Rocket Motor ◽  
Vortex Combustion

Validation with Numerical Simulations of a Simplified Model of a Hybrid Rocket Motor

PAMM ◽  
2015 ◽  
Vol 15 (1) ◽  
pp. 429-430
Author(s):  
Florin Frunzulica ◽  
Marius Stoia-Djeska ◽  
Florin Mingireanu
Keyword(s):  
Numerical Simulations ◽  
Rocket Motor ◽  
Simplified Model ◽  
Hybrid Rocket ◽  
Hybrid Rocket Motor
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