Results 21 to 30 of about 60,392 (293)

CFD Analysis of De Laval Nozzle of a Hybrid Rocket Engine [PDF]

E3S Web of Conferences
: The study gives a general overview of the CFD-simulated gas flow via the nozzle of a De Laval rocket engine. In CFD software, the mesh is generated using the nozzle’s geometry.
Ahmad Mohamed Tarmizi, Jagannathan Anudiipnath, Zhahir Amzari, Azami Muhammad Hanafi, Abidin Razali, Noordin Mohd Nor Hafizi, Nordin Norzaima   +6 more
doaj   +1 more source

Optimizing ideal ion propulsion systems depending on the nature of the propellant [PDF]

INCAS Bulletin, 2016
From all accounts the ion thrusters are characterized by the fact that they produce a very high exhaust velocity and specific impulse, sometimes too high for many missions.
Grigore CICAN, Ionut-Florian POPA
doaj   +1 more source

A Viscometric study of mixtures with Hydroxyl-terminated polybutadiene (HTPB) and short chain diols used in the formulations of solid composite propellants

Anais da Academia Brasileira de Ciências, 2021
Hydroxyl-terminated polybutadiene (HTPB) is widely used in the formulations of solid propellants used in rocket motors. Furthermore, in general, chain extenders and short chain diols, such as 1,4-butanediol and 1,2-propanediol, can also be used in ...
BRUNO C.C. DA CUNHA, MARCELA G. DOMINGUES, JOSÉ A.F.F. ROCCO   +2 more
doaj   +1 more source

High-nitrogen azotetrazole based pyrogen gas generating propellants: Aspects on synthesis, characterization, combustion characteristics and kinetics

FirePhysChem
Propellant formulations containing a novel high nitrogen azotetrazole salt viz., diammonium 5,5′-azotetrazolate (DAAzT) along with two different binders viz., hydroxyl terminated polybutadiene (HTPB) and glycidyl azide polymer (GAP) were realized as ...
Santhosh G, J. Anju, Supriya N, Sreejith M, Suraj S   +4 more
doaj   +1 more source

Experimental and Theoretical Determination of Water-Jet Velocity for Disruptor Application Using High Speed Videography [PDF]

Problemy Mechatroniki, 2019
Experimental and theoretical determination of water-jet velocity using high speed videography for disruptor application is reported in this paper. Water-jet disruptor extensively uses the water as a liquid projectile.
Bhupesh Ambadas PARATE, Sunil CHANDEL, Himanshu SHEKHAR, Viwek MAHTO   +3 more
doaj   +1 more source

Solid propellant burn rate characterization: Effect of copper chromite blend with oxidiser and its storage

FirePhysChem
This work details the study conducted on composite solid propellants with activated copper chromite (ACR) as burn catalyst for its burn rate change with time due to the interaction of ammonium perchlorate (AP) with ACR.
Sathiskumar PS, Alok Kumar Patel, Vinay Paliwal, Sojan P   +3 more
doaj   +1 more source

Research on aging behavior and safe storage life prediction of modified double base propellant

High Temperature Materials and Processes, 2022
In order to study the long-time safe storage performance of GaTo modified double base propellant, the accelerated aging tests at 65, 70, 75, and 85°C were conducted.
Gu Yan, Yu Silong, Wang Qiong, Du Jiaojiao, Wang Fangfang   +4 more
doaj   +1 more source

Proizvodnja piropatrona i raketnih motora pilotskih sedišta / Production of cartridges and eject seat rocket motors

Vojnotehnički Glasnik, 2006
Ovaj rad sadrži opis uspešnog razvoja i proizvodnje piropatrona, pogonskih punjenja i raketnih motora izbacivih pilotskih sedišta. Opisan je proces razvoja putem kopiranja stranog rešenja i njihovih modifikacija.
Milorad Savković, Danilo Serdarević
doaj   +1 more source

A Study on the Pressure Behavior Inside Propellant Line of Satellite [PDF]

Journal of Astronomy and Space Sciences, 2002
One of the way to derive design parameters of the fuel feeding system in satellite propulsion system is to analyze unsteady flow of liquid propellant (hydrazine).
Jin-Chul Choi, Jeong-Soo Kim
doaj   +1 more source

Thermal Decomposition of Ammonium Dinitramide (ADN) as Green Energy Source for Space Propulsion

Aerospace, 2023
The thermal decomposition of an ammonium dinitramide-based energetic compound was conducted for the first time using a dispersive inductively coupled plasma mass spectrometer, DTA-TG analysis, and pyrolysis at a constant temperature. A liquid droplet was
Zakaria Harimech, Kainaubek Toshtay, Meiram Atamanov, Seitkhan Azat, Rachid Amrousse   +4 more
doaj   +1 more source