Results 21 to 30 of about 520,173 (313)

Modelling Rocket System Performance Parameters

open access: yesAcademy Journal of Science and Engineering, 2022
What distinguishes the rocket system from airbreathing engines is that the rocket carries its own propellants, fuel and oxidants.  The modern rocket was originally developed for ballistic missiles.
Nnorom Achara
doaj  

Comparison of Submillimeter Spot Ablation of Copper and Nickel by Multipulse Picosecond and Femtosecond Laser

open access: yesMetals, 2022
The current transmission and reflection laser ablation micropropulsion modes have the problem of a complex working medium supply system in engineering. Therefore, we propose large-spot laser ablation with a one-dimensional supply mode. In order to verify
Mingyu Li   +6 more
doaj   +1 more source

Impulse Generation by an Open Shock Tube [PDF]

open access: yes, 2008
We perform experimental and numerical studies of a shock tube with an open end. The purpose is to investigate the impulse due to the exhaust of gases through the open end of the tube as a model for a partially filled detonation tube as used in pulse ...
Browne, S. T.   +3 more
core   +1 more source

The energy potential of some hypothetical nitrosubstituted tetrazoles derivatives [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2018
The energy abilities of solid composite propellants based on some nitrosubstituted tetrazole derivatives, which are still hypothetical but they are promising for create on their basis rather powerful propellants, have been considered.
I. Yu. Gudkova, D. B. Lempert
doaj   +1 more source

On the efficiency of using the Navier-Stokes approximation in thermogasdynamic calculation of low-thrust liquid-propellant rocket engines at low Reynolds numbers

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022
A numerical method for thermogasdynamic calculation of low-thrust liquid rocket engines is presented. These engines are used as end organs of the system of space attitude control for nanosatellites and small spacecraft.
A. D. Maksimov, S. A. Shustov
doaj   +1 more source

Arcjet plasma temperature estimation in thruster device [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2018
The kinetic theory of gases methods has been used to evaluate plasma arc parameters in the arcjet thruster device. It greatly means the compression process in adiabatic character and gas temperature increasing for excited atoms Boltzmann distribution ...
V. I. Gorbunkov   +3 more
doaj   +1 more source

Some nitrogen-rich heterocycles derivatives as potential explosives and propellants: A theoretical study [PDF]

open access: yesJournal of the Serbian Chemical Society, 2016
Four types of nitrogen-rich heterocycles substituted with -NO2, -NHNO2 and -C(NO2)3 explosophoric groups were explored as potential explosives and propellants materials.
Frem Dany
doaj   +1 more source

Design of Propellant Composite Thermodynamic Properties Using Rocket Propulsion Analysis (RPA) Software

open access: yesReaktor, 2022
Rocket Propulsion Analysis (RPA) is software for predicting the performance of a rocket engine. It is usually used in conceptual and preliminary design.
Anita Pinalia   +4 more
doaj   +1 more source

Analytical Model for the Impulse of Single-Cycle Pulse Detonation Tube [PDF]

open access: yes, 2003
An analytical model for the impulse of a single-cycle pulse detonation tube has been developed and validated against experimental data. The model is based on the pressure history at the thrust surface of the detonation tube.
Austin, J. M.   +4 more
core   +2 more sources

Impulse-response functions of several detectors used in flow-injection analysis [PDF]

open access: yes, 1990
A procedure for the determination of the impulse-response function of a detector is given. Its application to photometers, ion-sensitive field effect transistors, a potentiometric detector at constant current and a voltammetric detector shows that the ...
Bos, M.   +3 more
core   +3 more sources

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