Results 261 to 270 of about 9,538 (308)

Gelled hydrogren peroxide for green propellants

2010
Nearly pure hydrogen peroxide with less than 1% water was gelled using 15 to 25% polyvinyl-pyrrolidon (PVP) resulting in stable mono-propellants with reliable rheological properties and sensitivity parameters better than nitromethane according to drop hammer and friction. Maximum vacuum specific impulse was calculated to 2750 Ns/kg.
Weiser, Volker, Schaller, Uwe, Hürttlen, Jürgen, Raab, Angelika, Roth, Evelin   +4 more
openaire   +1 more source

High Performance Green Propellant for Satellite Applications

45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2009
This paper provides an overview of LMP-103S, a “High Performance Green Propellant” (HPGP) and outlines the benefits of LMP-103S as compared to hydrazine for monopropellant satellite applications. Corresponding performance and design characteristics of HPGP thrusters in the range of 1 N to 5 N are also reviewed.
K. Anflo, R. Mollerberg, K. Neff, Paul King   +3 more
openaire   +1 more source

GRAIL: Green Solid Propellants for Launchers

EUCASS, 2017
Ammonium perchlorate (AP) is used in solid propellants for launchers. AP is in many ways an excellent oxidizer, but unfortunately it has a negative impact on the environment and on personal health. With ever increasing environmental concerns green solid propellants are desired. The aim of the EU funded project GRAIL is to determine if it is possible to
openaire   +1 more source

ADN-based Formulations Analysis for Green Solid Propellants

2022
Space industry and space propulsion, in particular, are deeply affected by the growing awareness about the values of ecology and the needs of environmental friendly technological developments.. Current state-of-the-art technologies for both liquid and solid propellants employ formulations that produce environmental hazardous and toxic products.
L. POZZONI , C. PARAVAN , L. GALFETTI   +2 more
openaire   +1 more source

Making Progress Towards « Green » Propellants – Part III

Propellants, Explosives, Pyrotechnics
AbstractStabilisers are an integral part of a propellant composition. They are essential for ensuring the chemical stability of nitrate‐ester based propellants, preventing oxidation, chain scission and uncontrolled heat generation. Progress is being made, especially in Europe, with REACh legislation (1907/2006) to use more environmentally‐friendly ...
Rowan Dobson, Patrick Folly, Alexandre Sarbach, Romuald Van Riet, Bertrand Roduit, Jörgen Sandström, Erik Tunestål, Amy Carlström, Alain Dejeaifve   +8 more
openaire   +1 more source

Fusing of Seven HBCs toward a Green Nanographene Propeller

Journal of the American Chemical Society, 2019
This work presents a green chiral nanographene propeller (NP), which is built by fusing seven hexabenzocoronenes in a helical arrangement. It contains 258 conjugated carbon atoms and represents the largest three-dimensional conjugated polycyclic aromatic hydrocarbons ever prepared using scalable solution chemistry.
Yanpeng Zhu, Xiaoyu Guo, Yang Li, Jiaobing Wang   +3 more
openaire   +2 more sources

Ignition Test of Bi-Propellant Propulsion System Based on Green Propellants for Microsatellite

47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2011
Purpose of microsatellites under 50kg-class development, is now becoming to practical and more complicated mission. At the same time, propulsion system for the microsatellites tends to be eagerly desired for their missions with orbit transfer. Therefore, we considered chemical propulsion is very suitable for the microsatellites and started to develop ...
Nobuyoshi Suzuki, Hironori Sahara
openaire   +1 more source

Pulsed Chemical Rocket with Green High Performance Propellants

49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2013
PulCheR (Pulsed Chemical Rocket with Green High Performance Propellants) is a new propulsion concept in which the propellants are fed in the combustion chamber at low pressure and the thrust is generated by means of high frequency pulses, reproducing the defence mechanism of a notable insect: the bombardier beetle.
PASINI, ANGELO, Lucio, Torre, PACE, GIOVANNI, VALENTINI, DARIO, D'AGOSTINO, LUCA   +4 more
openaire   +2 more sources

Development of Green Bi-Propellant Stage

SSRN Electronic Journal, 2022
Gino P. Joy, Sujithkumar R, Geetha S.
openaire   +1 more source

Green Self-Propelling Swimmer Driven by Rain Droplets

SSRN Electronic Journal, 2022
Chen, Y, Yan, D, Liu, R, Lu, Y, Zhao, D, Deng, X, Song, J   +6 more
openaire   +2 more sources