Results 31 to 40 of about 98,594 (308)

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

Characterizing motor impulsivity of individuals classified as overweight to obese

open access: yesSports Medicine and Health Science, 2023
Deficits in the impulse control system are an important predictor of energy intake and body weight. Adults classified as overweight to obese may possess these deficits as a general behavioral trait or they may be food-specific. The present study assessed
Kyle D. Flack   +3 more
doaj   +1 more source

Effective Specific Impulse of a Pulsed Rocket Engine [PDF]

open access: yes, 1965
The specific impulse achieved in a pulsed rocket engine augmented with a fissioning nuclear bomb could be greater than that of any continuous flow engine.
Hanner, D. W., Platt, E. A.
core   +1 more source

Ultrahigh Specific Impulse Nuclear Thermal Propulsion [PDF]

open access: yes, 2009
Research on nuclear thermal propulsion systems (NTP) have been in forefront of the space nuclear power and propulsion due to their design simplicity and their promise for providing very high thrust at reasonably high specific impulse.
Anghaie, Samim   +2 more
core   +1 more source

Long-Duration Dynamic Numerical Simulation of Combustion and Flow in Hybrid Rocket Motors Considering Nozzle Erosion

open access: yesAerospace
Hybrid rocket motors have great development potential due to their outstanding thrust adjustment flexibility and long-term operation ability. However, nozzle erosion during the motor operation can cause an increase in the throat area of the nozzle, which
Xiangyu Meng   +5 more
doaj   +1 more source

Performance of laser ablation propulsion with a high-repetition rate and high-power laser

open access: yesAIP Advances, 2022
We investigated the propulsive performance of laser ablation propulsion using a high-power and highly repetitive pulsed laser. We demonstrated 100 shots of burst laser irradiation with an aluminum target using repetition frequencies of 0.017 Hz and 1 kHz.
Kazuki Igarashi   +4 more
doaj   +1 more source

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