Results 81 to 90 of about 52,081 (256)

Alternate propellants for the space shuttle solid rocket booster motors [PDF]

open access: yes
As part of the Shuttle Exhaust Effects Panel (SEEP) program for fiscal year 1973, a limited study was performed to determine the feasibility of minimizing the environmental impact associated with the operation of the solid rocket booster motors (SRBMs ...

core   +1 more source

Formulation of Hexamine‐based Fuels for Hybrid Rockets

open access: yesPropellants, Explosives, Pyrotechnics, Volume 49, Issue 8, August 2024.
Abstract Hybrid rockets have many attractive properties but have not yet been used in any high performance applications, mainly due to the low regression rate of the solid fuels used. In this work, a number of crystalline organic fillers were assessed with the aim to increase the regression rate and density of HTPB‐based fuels.
Niklas Wingborg
wiley   +1 more source

Synthesis of multifunctional additives for solid propellants: Structure, properties and mechanism

open access: yesDefence Technology
To simplify the composite propellant formulation and address the current issue of the single-functionality present in existing additives, the multi-cyano, amine-based polybutadiene (AEHTPB-CN) was prepared based on AEHTPB by adopting appropriate ...
Pingan Zhang   +3 more
doaj   +1 more source

HTPB propellant aging mechanisms and safety characteristics: microscopic structural changes, thermal stability, and self-accelerating decomposition temperature

open access: yesCase Studies in Thermal Engineering
As hydroxyl-terminated polybutadiene (HTPB) propellant surpasses its intended service life, its performance degrades, necessitating careful disposal to avert potential safety hazards.
Xi-chen Liu   +6 more
doaj   +1 more source

Combustion chemistry of solid propellants [PDF]

open access: yes
Several studies are described of the chemistry of solid propellant combustion which employed a fast-scanning optical spectrometer. Expanded abstracts are presented for four of the studies which were previously reported.
Baer, A. D., Ryan, N. W.
core   +1 more source

Exploiting technological synergies for future launch vehicles [PDF]

open access: yes, 2013
Two launch vehicle concepts based on technologies available today or in a short term future in Western Europe are presented. The design of both launchers has the goal of exploiting synergies with current European programs to limit development and ...
Burkhardt, Holger   +5 more
core  

A feasibility study for Scout polar launches from NASA Wallops Flight Center [PDF]

open access: yes
The feasibility of launching the Scout vehicle into a polar orbit from Wallops Flight Center is discussed. The impact of proposed flights on vehicle hardware and range safety are defined.
Myler, T. R.
core   +1 more source

Ares V: A National Launch Asset for the 21st Century [PDF]

open access: yes, 2009
NASA is designing the Ares V as the cargo launch vehicle to carry NASA's exploration plans into the 21st century. The Ares V is the heavy-lift component of NASA's dual-launch architecture that will replace the current space shuttle fleet, complete the ...
Creech, Steve, Sumrall, Phil
core   +1 more source

Active debris multi-removal mission concept based on hybrid propulsion [PDF]

open access: yes, 2014
During the last 40 years, the mass of the artificial objects in orbit increased quite steadily at the rate of about 145 metric tons annually, leading to about 7000 metric tons.
A. Francesconi   +13 more
core   +2 more sources

Transient processes in the combustion of nitramine propellants [PDF]

open access: yes
A transient combustion model of nitramine propellants is combined with an isentropic compression shock formation model to determine the role of nitramine propellant combustion in DDT, excluding effects associated with propellant structural properties or ...
Cohen, N. S., Strand, L. D.
core   +1 more source

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