Results 271 to 280 of about 7,612 (306)

A simplified design methodology for coaxial swirl injector

33rd Joint Propulsion Conference and Exhibit, 1997
Gas-liquid coaxial swirl injectors are widely used in advanced hydrogen/oxygen rocket engines and hydrogen/oxygen/hydrocarbon tripropellant engines. The design quality of injector is very important to the performance, stability, reliability and life-span of the liquid rocket engine. A simplified flowrate characteristics based methodology for the design
XiaoPing Hu, Jin Zhou, YuLin Zhang, ZhenGuo Wang, XiaoPing Hu, Jin Zhou, YuLin Zhang, ZhenGuo Wang   +7 more
openaire   +1 more source

ATOMIZATION OF GELLED PROPELLANTS FROM SWIRL INJECTORS WITH LEAF SPRING IN SWIRL CHAMBER

Atomization and Sprays, 2011
Gelled propellants behave as non-Newtonian fluids and are promising for future aerospace application because they combine the advantages of solid propellants with those of liquid propellants. Spray formation of gelled propellants from swirl injectors in which a leaf spring was installed was described by carrying out experiments in a spray test facility
Li-jun Yang, Qingfei Fu, Wei Zhang, Ming-long Du, Ming-xi Tong   +4 more
openaire   +1 more source

Experimental study on combustion stability characteristics of non-swirl and swirl coaxial injectors

34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998
To clarify the difference of combustion stability characteristics between conventional coaxial injectors and swirl-coaxial injectors, an experimental study with liquid oxygen (LOX) /hydrogen and LOX/methane propellants was conducted using thrust chambers with nominal thrusts of 7 and 14 kN at chamber pressures from 2.3 to 10 MPa. Stability rating tests
Masaki Sasaki, Hiroshi Sakamoto, Mamoru Takahashi, Takeo Tomita, Hiroshi Tamura   +4 more
openaire   +1 more source

Dynamic Characteristics of Open-Type Swirl Injector with Varying Geometry

Journal of Propulsion and Power, 2015
Combustion instabilities in a liquid rocket engine are generated by coupling between the heat release oscillations and the acoustic pressure oscillations in the combustion chamber. These instabilities from the combustion chamber can affect the injector and the feed line, which are in front of the combustion chamber.
Yunjae Chung, Hyuntae Kim, Seokgyu Jeong, Youngbin Yoon   +3 more
openaire   +1 more source

Experimental Cold-Flow Investigations of Swirl Injectors

AIAA Propulsion and Energy 2021 Forum, 2021
Mahmoud M. Hegazy, Hatem M. Belal, Mohamed A. Al-Sanabawy   +2 more
openaire   +1 more source

Disintegration of Liquid Sheet Produced by Swirl Injector

2018
The development of liquid sheets that emerges from nozzles is influenced mainly by their initial speed and by the physical properties of the liquid and the ambient gas. A minimum speed of the sheet is necessary for its enlargement against the superficial tension that tends to contract the surface. As this speed increases, the sheet expands until a main
openaire   +1 more source

Cavitation erosion in swirl propellant injectors

33rd Joint Propulsion Conference and Exhibit, 1997
V. Bazarov, E. Marchukov, V. Bazarov, E. Marchukov   +3 more
openaire   +1 more source

Development and testing of an additively manufactured counter-swirl injector head [PDF]

Additive manufacturing allows for new designs for injection elements of rocket engines. Counter-swirled injection channels of different sizes can be integrated in each injection element. Additionally, using an integrated design reduces time consuming integration steps.
Ortelt, Markus, Selzer, Markus, Seiler, Helge   +2 more
openaire   +1 more source

The Spray Characteristics of Swirl Coaxial Injectors

41st Aerospace Sciences Meeting and Exhibit, 2003
Poong-Gyoo Han, Jae-Hoon Seol, Seong-Ha Hwang, Youngbin Yoon   +3 more
openaire   +1 more source

STRUCTURE OF A NONEVAPORATING SWIRL INJECTOR SPRAY

Atomization and Sprays, 1997
Douglas A. Feikema, Richard Eskridge, John J. Hurt   +2 more
openaire   +1 more source