Results 21 to 30 of about 28,947 (287)

The design and performance on 200N-class bipropellant rocket engine using decomposed H2O2 and Kerosene [PDF]

INCAS Bulletin, 2019
Mono-propellant thrusters are widely utilized in satellites and space launchers. In many cases, they are using hydrazine as a propellant. However, hydrazine has high toxicity and high risks in using for launch campaign.
Yang-Suk LEE, Jun Hwan JANG
doaj   +1 more source

Autophage engines: towards a throttleable solid motor [PDF]

, 2018
This paper describes the instrumented test firing of a rocket that seeks to combine the throttleability of a liquid-fueled engine with the simplicity of a solid motor.
Dron, Mykola, Harkness, Patrick, Middleton, Michael, Pashkov, Anatoly, Worrall, Kevin, Yemets, Vitaly   +5 more
core   +1 more source

Verification of Model of Calculation of Intra-Chamber Parameters In Hybrid Solid-Propellant Rocket Engines

MATEC Web of Conferences, 2016
On the basis of obtained analytical estimate of characteristics of hybrid solid-propellant rocket engine verification of earlier developed physical and mathematical model of processes in a hybrid solid-propellant rocket engine for quasi-steady-state flow
Zhukov Ilya S., Borisov Boris V., Bondarchuk Sergey S., Zhukov Alexander S.   +3 more
doaj   +1 more source

A New Erosive Burning Model of Solid Propellant Based on Heat Transfer Equilibrium at Propellant Surface

International Journal of Aerospace Engineering, 2020
Erosive burning refers to the augmentation of propellant burning rate appears when the velocity of combustion gas flowing parallel to the propellant surface is relatively high.
Yanjie Ma, Futing Bao, Lin Sun, Yang Liu, Weihua Hui   +4 more
doaj   +1 more source

Numerical Simulation of the Gas Flow of Combustion Products from Ignition in a Solid Rocket Motor Under Conditions of Propellant Creep

Aerospace
The development of modern solid rocket technology with high-performance and high-loading ratio propellants places higher requirements on the safety and stability of the solid rocket motor.
Yin Zhang, Zhensheng Sun, Yu Hu, Yujie Zhu, Xuefeng Xia, Huang Qu, Bo Tian   +6 more
doaj   +1 more source

Reliability of solid rocket propellant grain under simultaneous action of multiple types of loads [PDF]

Scientific Technical Review, 2016
A case-bonded solid propellant rocket grain is subjected to many stress-inducing loads during the service life, due to temperature, extended polymerization, transportation, vibration, acceleration, aerodynamic heating etc.
Gligorijević Nikola, Živković Saša, Rodić Vesna, Antonović Saša, Milojković Aleksandar, Pavković Bojan, Novaković Zoran   +6 more
doaj  

Parameters Affecting the Erosive Burning of Solid Rocket Motor

MATEC Web of Conferences, 2018
Increasing the velocity of gases inside solid rocket motors with low port-to-throat area ratios, leading to increased occurrence and severity of burning rate augmentation due to flow of propellant products across burning propellant surfaces (erosive ...
Abdelaziz Almostafa, Guozhu Liang, Elsayed Anwer   +2 more
doaj   +1 more source

Analysis of viscoelastic behavior of a filled elastomer under action of different loads [PDF]

Hemijska Industrija, 2017
Mechanical properties of viscoelastic filled polymers strongly depend on temperature and strain rate and vary for several orders of magnitude. During service life, a viscoelastic body, especially carboxy-terminated polybutadiene (CTPB) composite solid ...
Gligorijević Nikola I., Živković Saša Ž., Kovačević Nenad V., Dimitrijević Nenad P., Pavković Bojan M., Pavić Miloš, Rodić Vesna Ž.   +6 more
doaj   +1 more source

Hybrid rocket propulsion technology for space transportation revisited - propellant solutions and challenges

FirePhysChem, 2021
This paper presents the status of developments worldwide regarding use of hybrid rocket motors for space transportation. Historical roots are presented and reasons for revisiting hybrid technology after a few decades of limited interest are examined ...
Adam Okninski, Wioleta Kopacz, Damian Kaniewski, Kamil Sobczak   +3 more
doaj   +1 more source

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

INCAS 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