Results 1 to 10 of about 14,190 (245)

Solid Rocket Motor Design Using Hybrid Optimization [PDF]

International Journal of Aerospace Engineering, 2012
A particle swarm/pattern search hybrid optimizer was used to drive a solid rocket motor modeling code to an optimal solution. The solid motor code models tapered motor geometries using analytical burn back methods by slicing the grain into thin sections along the axial direction. Grains with circular perforated stars, wagon wheels, and dog bones can be
Kevin Albarado, Roy Hartfield, Wade Hurston, Rhonald Jenkins   +3 more
openaire   +2 more sources

Swirl Injection Effects on Hybrid Rocket Motors

Journal of Aerospace Technology and Management, 2015
In the last decades, hybrid rocket engines have been increasingly studied and used in space vehicles. However, the low regression rates and specific impulses still represent major drawbacks to this technology. The objective of this study was to quantify the relative improvement of regression rate values with the use of a swirling flow injector in ...
Gomes, Susane Ribeiro, Rocco, Leopoldo, Rocco, José Atílio Fritz F.   +2 more
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HYBRID PROPELLANT ROCKET MOTOR [PDF]

International Conference on Aerospace Sciences and Aviation Technology, 1999
The paper deals with hybrid propellant rocket motor as a propulsion unit of prospective rocket weapon systems, as well as a drive unit of some cosmic rocket carriers. There are introduced possible constructional schemes of hybrid propellant rocket motor and is mentioned further on the particular general internal ballistic solution of the solid part of ...
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A LABSCALE HYBRID ROCKET MOTOR IGNITION SYSTEM [PDF]

The International Conference on Applied Mechanics and Mechanical Engineering, 2012
ABSTRACTThe hybrid propulsion has the superiority of safety (Non-explosive), simplicity (highreliability), low environmental pollution and available technology over traditional solidand liquid propulsion, all these benefits have a tendency to low cost and laboratorywork.
A. Makled, H. Mostafa, M. Al-Sanabawy, M. Al-Timimi   +3 more
openaire   +1 more source

Analysis of pressure blips in aft-finocyl solid rocket motor [PDF]

, 2016
Ballistic anomalies have frequently occurred during the firing of several solid rocket motors (SRMs) (Inertial Upper Stage, Space Shuttle Redesigned SRM (RSRM) and Titan IV SRM Upgrade (SRMU)), producing even relevant and unexpected variations of the SRM
E., Cavallini, Favini, Bernardo, M., Di Giacinto   +2 more
core   +1 more source

METALIZED FUEL HYBRID ROCKET MOTOR PARAMETRIC STUDY [PDF]

International Conference on Aerospace Sciences and Aviation Technology, 2015
The objective of this paper is to study theoretically and experimentally the effects of different design parameters on hybrid rocket motor (HRM). HRM propellant constituents are Polyethylene (PE) with Al powder additive as solid fuel and gaseous oxygen (GO2) as oxidizer.
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Effect of tangential swirl air inlet angle on the combustion efficiency of a hybrid powder-solid ramjet [PDF]

, 2019
A new ramjet configuration using powder and solid fuel as propellant is investigated, namely, hybrid powder-solid ramjet (HPSR). Boron particles were used as the powder in this study.
ANSYS Inc, Ao, Betelin, Cai, Chang, Chelaru, Chen, dawara, Gany, Gany, Glassman, Goroshin, Haijun Sun, Hu, Humberto Medina, Hussmann, Hussmann, Jung, Kalpakli, Kazaoka, King, Li, Li, Liang, Loftus, Magnussen, Meinköhn, Morsi, Musa, Musa, NASA, Natan, Nie, Pern, Pern, Povitsky, Rashkovskiy, Rodić, Rui Jia, Sandall, Sender, Shih, Shorr, Varghese, Wang, Xia, Xia, Xu, Yeh, Yihua Xu   +49 more
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Performance Comparison Between Two Different Injector Configurations in a Hybrid Rocket [PDF]

, 2007
Mass flux and pressure are usually considered the main parameters affecting the fuel regression rate in hybrid rockets, whereas the influence of the oxidiser injector is often neglected. Nevertheless, in some specific configurations, even in conventional
CARMICINO, CARMINE, RUSSO, ANNAMARIA
core   +1 more source

Computational algorithm for hybrid rocket motor preliminary design [PDF]

Kafrelsheikh Journal of Information Sciences, 2021
Hybrid rockets present a compromise between solid and liquid rockets. It has a simpler design than liquid rockets and higher performance than solid rockets. It is constructed from an oxidizer tank followed by a solid fuel grain. Therefore, the combustion is controlled.
openaire   +1 more source

A Soviet quasi-market for inventions : jet propulsion, 1932–1946 [PDF]

This paper is about how a command system allocated resources under profound uncertainty. The command system was the Soviet economy, the period was Stalin's dictatorship, and the resources were designated for military research & development.
Harrison, Mark
core   +1 more source