Results 191 to 200 of about 5,407 (249)

Stagnation Point Combustion of a Monopropellant

AIAA Journal, 1981
The steady-state stagnation point transport and reaction equations describing premixed monopropellant combustion have been investigated approximating the chemical processes by an endothermic solid-phase pyrolysis and a one-step exothermic unidirectional gas-phase reaction.
Adomeit, G., Hocks, W.
openaire   +2 more sources

The auto-ignition boundary of ethylene/nitrous oxide as a promising monopropellant

, 2020
C2H4/N2O has recently been proposed as a promising monopropellant for hydrazine replacement. In this work, the auto-ignition capability of argon diluted C2H4/N2O was experimentally investigated firstly in a rapid compression machine by detecting the ...
Meng Yang, Yue Yang, Caiyue Liao, Chenglong Tang, Chong-Wen Zhou, Zuo-hua Huang   +5 more
semanticscholar   +1 more source

Development of a CubeSat-Scale Green Monopropellant Propulsion System for NASA's Lunar Flashlight Mission

AIAA Scitech 2021 Forum, 2020
NASA’s Lunar Flashlight is a low-cost 6U CubeSat whose mission is to search for ice and mineral deposits inside of the scattered craters atMoon’s southern pole.
G. Huggins, Ali Talaksi, D. Andrews, E. Lightsey, D. Cavender, D. Mcqueen, H. Williams, C. Diaz, J. Baker, Matthew K. Kowalkowski   +9 more
semanticscholar   +1 more source

Ignition Mechanisms in Monopropellants

Propellants, Explosives, Pyrotechnics, 1991
AbstractThe sensitivity of liquid monopropellants is examined when subjected to compression ignition, including the case of purposeful sensitization with air bubbles; and frictional heating. The monopropellant is a hydroxylammonium nitrate (HAN)‐based propellant.
Neale A. Messina, Larry S. Ingram, Marek Tarczynski, John D. Knapton   +3 more
openaire   +1 more source

Criteria for Ignition in Monopropellant Engines

Journal of Spacecraft and Rockets, 1985
Nomenclature = interfacial area for heat transfer, 1 = gas specific heat, 60 J/mole K = solid specific heat, 1 .0 J/g K = heat transfer coefficient, 210 J/m-s K = effective thermal conductivity of catalyst bed, 0.30 Ts J/m-s K = gas pressure, atm = gas constant = rate of surface reaction per unit surface area = amount of catalyst surface area per unit ...
J. B. BENZIGER, J. E. STRONG
openaire   +1 more source

Dual-Plate Injector for Throttling of Hydrogen Peroxide Monopropellant Thruster

, 2021
This study provides an experimental analysis of the throttling methods implemented using a throttleable injector that generates a thrust in the range 24–64% on a 50 N monopropellant thruster using ...
Yehyun Kim, Hyuntak Kim, Junyeong Jeong, Sejin Kwon   +3 more
semanticscholar   +1 more source

Response function of ammonium perchlorate monopropellant

Combustion and Flame, 2020
Abstract Response function of ammonium perchlorate (AP) has been studied. An unsteady model of AP combustion has been used based on the recent experimental findings reported. The key findings of this work are the good comparisons with experimental results, which until date had not been predicted accurately.
Kumar Nagendra, Chaitanya Vijay, P.A. Ramakrishna   +2 more
openaire   +1 more source

Simulation Model for Catalytic Monopropellant Hydrazine Thrusters

IFAC Proceedings Volumes, 1992
Abstract Hydrazine thrusters are often used as actuators for spacecraft attitude and orbit control systems, for example for the missions of METEOSAT, OTS, INTELSAT and GIOTTO. The reason is that hydrazine requires less hardware than other propellants, and thrusters with thrust levels down to 0.5 N with reproducible minimum impulse bit down to 0.005 N
CAVALLO, Alberto, DE MARIA, Giuseppe, MARINO, Pompeo   +2 more
openaire   +2 more sources

Monopropellant Decomposition in a Reactive Atmosphere†

Combustion Science and Technology, 1978
Abstract The quasi-steady decomposition of a monopropellant is considered when the monopropellant reacts with the ambient atmosphere in a one-step irreversible process. The solution is characterized by the variation of the vaporization rate M with two Damkohler numbers, D 1 and D 2, the first a measure of the monopropellant reaction rate and the second
J. D. BUCKMASTER, A. K. KAPILA, G. S. S. LUDFORD   +2 more
openaire   +1 more source

A Monopropellant-Powered Muscle Actuation System

ASME 2010 Dynamic Systems and Control Conference, Volume 1, 2010
This paper describes the design and control of a new monopropellant-powered muscle actuation system for robotic systems, especially the mobile systems inspired by biological principles. Based on the pneumatic artificial muscle, this system features a high power density, as well as characteristics similar to biological muscles.
Xiangrong Shen, Daniel Christ
openaire   +1 more source