Results 11 to 20 of about 412,817 (220)

A Study of Rocket Exhaust Particles [PDF]

open access: yes, 1996
The exhaust -plumes generated by rocket motors are of significant military importance for missile detection, recognition and communication due to their electromagnetic emission and propagation properties. The plume is a high temperature, high velocity
Dennis, C. W.
core   +7 more sources

Experimental validation of rotating detonation for rocket propulsion

open access: yesScientific Reports, 2023
Space travel requires high-powered, efficient rocket propulsion systems for controllable launch vehicles and safe planetary entry. Interplanetary travel will rely on energy-dense propellants to produce thrust via combustion as the heat generation process
John W. Bennewitz   +14 more
doaj   +1 more source

Performances Study of a Hybrid Rocket Engine [PDF]

open access: yesINCAS Bulletin, 2018
This paper presents a study which analyses the functioning and performances optimization of a hybrid rocket engine based on gaseous oxygen and polybutadiene polymer (HTPB).
Adrian-Nicolae BUTURACHE
doaj   +1 more source

COMBUSTION PROCESSES IN HYBRID ROCKETS

open access: yesInternational Journal of Energetic Materials and Chemical Propulsion, 2019
This paper presents the latest results achieved at the Space Propulsion Laboratory of Politecnico di Milano in the area of hybrid propulsion. Focus is put on four specific research topics currently under investigation and strongly linked: (1) solid fuel formulations development; (2) investigation of the burning behavior of liquefying fuel formulations ...
Paravan, Christian   +3 more
openaire   +1 more source

A Phenomenological Model for the Unsteady Combustion of Solid Propellants from a Zel’dovich-Novzhilov Approach

open access: yesAerospace, 2023
Solid rocket motors are prone to combustion instabilities, which may lead to various problems for the rockets, from unexpected oscillations, precision decreasing, to explosion.
Zhuopu Wang, Wenchao Zhang, Yuanzhe Liu
doaj   +1 more source

Convective and Film Cooled Nozzle Extension for a High Pressure Rocket Subscale Combustion Chamber [PDF]

open access: yes, 2010
Experimental investigations have been carried out to study heat transfer, flow separation, and side loads in a subscale nozzle extension. A Vulcain 2-like nozzle geometry has been tested with combustion chamber pressures up to 13 MPa. A new manufacturing
Richard Arnold   +5 more
core   +1 more source

Regarding the perturbed operating process of DB propellant rocket motor at extreme initial grain temperatures [PDF]

open access: yesINCAS Bulletin, 2012
Despite many decades of study, the combustion instability of several DB propellants is still of particular concern, especially at extreme grain temperature conditions of rocket motor operating.
Ioan ION, Titica VASILE, Doru SAFTA
doaj   +1 more source

Solid-Fuel Regression Rate for Standard-Flow Hybrid Rocket Motors

open access: yesJournal of Thermal Science and Technology, 2012
Marxman's diffusion-limited analysis of hybrid rocket combustion has been often used to investigate various combustion problems in hybrid rocket motors.
Takakazu MORITA   +3 more
doaj   +1 more source

Numerical Investigation on Hybrid Rocket Motors with Star-Segmented Rotation Grain

open access: yesAerospace, 2022
A novel fuel grain configuration comprising two star-segmented grains is proposed. The effect of the rotation, mid-chamber length, and segmented position on the fuel regression rate and the combustion efficiency in hybrid rocket motors with star ...
Hui Tian   +5 more
doaj   +1 more source

Ignition and Flame Stabilization of a Strut-Jet RBCC Combustor with Small Rocket Exhaust

open access: yesThe Scientific World Journal, 2014
A Rocket Based Combined Cycle combustor model is tested at a ground direct connected rig to investigate the flame holding characteristics with a small rocket exhaust using liquid kerosene.
Jichao Hu, Juntao Chang, Wen Bao
doaj   +1 more source

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