Results 181 to 190 of about 875 (223)

Optimal battery selection for hybrid rocket engine [PDF]

open access: yesAIP Conference Proceedings, 2022
In the present paper, the optimal selection of batteries for an electric pump -fed hybrid rocket engine is analyzed. A two -stage Mars Ascent Vehicle, suitable for the Mars Sample Return Mission, is considered as test case. A single engine is employed in the second stage, whereas the first stage uses a cluster of two engines.
Masseni, F, Masseni F.
openaire   +2 more sources

Optimal Robust Design of Hybrid Rocket Engines

Springer Optimization and Its Applications, 2016
Hybrid rocket engines are flexible, safe, reliable, and low-cost and can be used in many aerospace applications. The engine design and operation are contingent on the type of designated mission and engine design is strictly related to trajectory optimization.
Dario Pastrone   +2 more
exaly   +2 more sources

Thermoacoustic instabilities in future hybrid rocket engines [PDF]

open access: yes
This thesis investigates the thermoacoustic behaviour of the PB1–HX3 subsystem—comprising a preburner and heat exchanger—within SABRE (Synergetic Air-Breathing Rocket Engine), a single-stage-to-orbit propulsion concept by Reaction Engines Ltd. SABRE integrates advanced heat exchangers with conventional turbomachinery to operate in air-breathing and ...
Giraudi, Pietro
openaire   +2 more sources

Scalability and dynamic stability of hybrid rocket engines

Proceedings of 5th International Conference on Recent Advances in Space Technologies - RAST2011, 2011
This paper is divided in two parts. The purpose of the first part is to tackle the problem of geometrical scalability of hybrid rocket engines while the second part of the paper the stability of hybrid rocket motor is investigated using Liapunov theory.
Teodor-Viorel Chelaru
exaly   +2 more sources

Numerical Analysis of Paraffin-Wax/Oxygen Hybrid Rocket Engines [PDF]

open access: yesJournal of Propulsion and Power, 2020
A predictive numerical approach, based on Reynolds-averaged Navier–Stokes simulations including the effects of turbulence, chemistry, fluid/surface interaction, and radiation, has been developed for paraffin-wax/oxygen hybrid rocket engines.
Mario Tindaro Migliorino   +2 more
exaly   +3 more sources

Optimal propellant control in hybrid rocket engines

31st Joint Propulsion Conference and Exhibit, 1995
Paper AIAA 95 ...
COLASURDO, GUIDO   +2 more
openaire   +3 more sources

Restart transients of hybrid rocket engines.

Journal of Spacecraft and Rockets, 1973
Experimental investigation of the problems associated with restarting hybrid rocket motors (i.e., motors wherein a liquid or gaseous oxidizer is injected into the port of a solid fuel grain with subsequent mixing and combustion of the oxidizer and fuel) following a brief period of extinguishment. The results include the finding that the ignition delay
M. A. SARANIERO   +2 more
openaire   +1 more source

Characterization of Advanced Hybrid Rocket Engines [PDF]

open access: yes, 2015
In the last years, the discovery of high regression rate liquefying fuels has generated a renewed interest in hybrid propulsion systems due to some advantages in certain applications compared to solid or liquid rockets. The intrinsic safety, simplicity
Petrarolo, Anna   +2 more
openaire   +2 more sources

Hybrid Gas Generator for a Staged Hybrid Rocket Engine

Journal of Propulsion and Power, 2017
The two-stage combustion hybrid rocket engine with a hybrid gas generator method offers numerous advantages over a solid-propellant gas generator and classical hybrid rocket engines. These advantages include a higher specific impulse in operation, lower lifecycle costs, and lower sensitivity to combustion pressure.
Dongeun Lee, Changjin Lee
openaire   +1 more source

Hybrid Rocket Engines

2012
The hybrid rocket engine utilizes a combination of solid rocket and liquid rocket technology to meet some flight mission applications. In terms of performance, cost, availability of materials and safety, the hybrid approach does potentially have some advantages.
openaire   +1 more source

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