Zobrazeno 1 - 10
of 3 274
pro vyhledávání: '"Rocket motor"'
Publikováno v:
FirePhysChem, Vol 4, Iss 4, Pp 354-368 (2024)
This study demonstrates the thrust modulation capabilities of a hybrid rocket motor employing a Multi-Layered Tubular (MLT) fuel grain. The MLT configuration involves arranging the fuel grains with distinct regression rates as layers. As combustion p
Externí odkaz:
https://doaj.org/article/26c03177d7f44832876ab37c54b63829
Publikováno v:
Ultrasonics Sonochemistry, Vol 111, Iss , Pp 107107- (2024)
The regulation of propellant combustion using ultrasonic waves is proposed. Under ultrasonic frequencies of 25–40 kHz, we systematically examined the combustion characteristics of Al particles, ammonium perchlorate (AP)/hydroxyl-terminated polybuta
Externí odkaz:
https://doaj.org/article/10fdbddb53da459e93a6abbef83e3491
Publikováno v:
Aerospace, Vol 11, Iss 10, p 848 (2024)
According to the requirements of the small double-pulse solid rocket motor, a compartmentalized isolation device has been designed. This device consists of a metal diaphragm and a support frame. An experimental study and numerical simulation were use
Externí odkaz:
https://doaj.org/article/c29f84534a864f7e96f56288153b2646
Publikováno v:
Defence Technology, Vol 29, Iss , Pp 181-192 (2023)
This study investigates the ablation of internal insulation induced by the deposition of an alumina film with different lateral film speeds. A sub-scale test solid rocket motor (SRM) was designed in an impinging jet configuration to form an alumina f
Externí odkaz:
https://doaj.org/article/f31f8be94c56431e97926e4de246975f
Publikováno v:
Sensors, Vol 24, Iss 17, p 5567 (2024)
Carbon fiber-reinforced polymers (CFRPs) are widely used in the fabrication of solid rocket motor casings due to their exceptional performance. However, the bonding interface between CFRP and viscoelastic materials (rubber) is prone to debonding dama
Externí odkaz:
https://doaj.org/article/905c14fee53c45c5aee268b865d3582e
Publikováno v:
Materials, Vol 17, Iss 15, p 3790 (2024)
Quasi-static and dynamic tensile tests on aluminum-hydroxide-enhanced ethylene propylene diene monomer (EPDM) coatings were conducted using a universal testing machine and a Split Hopkinson Tension Bar (SHTB) over a strain rate range of 10−3 to 103
Externí odkaz:
https://doaj.org/article/c9b313d83a1b4839842237b410d131fb
Publikováno v:
Aerospace, Vol 11, Iss 7, p 550 (2024)
The coupling action of gas flow with propellant burning surface regression is the critical process in solid rocket motor (SRM), which has an important effect on the unsteady combustion, erosive burning, dynamic combustion and pressure fluctuation of
Externí odkaz:
https://doaj.org/article/8befb0c6474e41cc9499bf5c44a43fca
Publikováno v:
Aerospace, Vol 11, Iss 5, p 384 (2024)
To achieve rapid vector maneuvering of a space micro-nano satellite, a micro-sized solid rocket motor was utilized as its propulsion system, and a micro-jet-vane-thrust-vector control system was devised. Computational fluid dynamics (CFD) numerical s
Externí odkaz:
https://doaj.org/article/c2b8467d99c2426c87f310d73e96f804
Publikováno v:
Aerospace, Vol 11, Iss 4, p 318 (2024)
Hybrid rocket motors have great development potential due to their outstanding thrust adjustment flexibility and long-term operation ability. However, nozzle erosion during the motor operation can cause an increase in the throat area of the nozzle, w
Externí odkaz:
https://doaj.org/article/939a19f1a8684c8eb94095bba371b94e
Publikováno v:
Aerospace, Vol 11, Iss 3, p 215 (2024)
A solid rocket motor (SRM) with a high aspect ratio that performs normally during ground tests may experience instability during flight. To address this issue, this study employs the pulse triggering method and the numerical approach of two-way fluid
Externí odkaz:
https://doaj.org/article/bbafba0643bb41aebfbc8a34b41989ca