Results 201 to 210 of about 1,860 (260)

INVESTIGATION OF SOLID PROPELLANT MICROTHRUSTERS

International Journal of Computational Engineering Science, 2003
A novel micropropulsion system is described for high-accuracy station keeping, attitude control and speed adjusting of microspacecraft. The proposed solid propellant microthruster is composed of two layers bonded together. One layer is a silicon layer, which contains a microchamber, a micronozzle and a 30-micron slot.
K. L. Zhang, S. K. Chou, Simon S. Ang, X. S. Tang, J. S. Phang   +4 more
openaire   +1 more source

Adiabatic pyrolysis of solid propellants

35th Aerospace Sciences Meeting and Exhibit, 1997
Several one-step, irreversible, zero-order pyrolysis models (Arrhcnius, KTSS, and Merzhanov Dubovitskii high activation energy pyrolysis), commonly used to study adiabatic burning of energetic materials with arbitrary pressure and initial temperature, are revisited.
DE LUCA, LUIGI, VERRI, MAURIZIO, COZZI, FABIO, COLOMBO, GIOVANNI, E. Volpe   +4 more
openaire   +1 more source

Ignition and Combustion of Solid Propellants

1961
Abstract : A model for the ignition response of solid propellants is presented, which predicts ignition behavior with respect to pressure and surface heat flux in qualitative agreement with experimental measurements. Surface regression is treated and a steady-state burning model is employed, which assumes equlibrium vaporization at the surface and a ...
Norman W. Ryan, Alva D. Baer, John A. Keller, Rex C. Mitchell   +3 more
openaire   +1 more source

Solid-propellant erosive burning

Journal of Propulsion and Power, 1987
A modeling approach based on experimental verification for the erosive burning of ammonium perchlorate composite propellants is proposed. It retains the idea that erosive burning is due to the penetration of the flow turbulence within the flame height and to the consequent enhancement of the transport coefficients and of the heat flux to the surface ...
J. GODON, J. DUTERQUE, G. LENGELLE
openaire   +1 more source

Solid propellent rheology

Rheologica Acta, 1969
The rheological behaviour of plastic propellent in rocket motor situations is simulated in an experimental technique. In this a differential gas pressure is applied across a plug of propellent in a rigid tube so as to deform it in an approximately telescopic shear fashion. Preliminary results are given and discussed.
H. J. Buswell, J. F. Moloney, G. S. Pearson   +2 more
openaire   +1 more source

SOLID PROPELLANT COMBUSTION INSTABILITY: OSCILLATORY BURNING OF SOLID ROCKET PROPELLANTS

1965
Abstract : Contents: The occurrence of combustion instability in solid propellant rocket motors; The morphology of combustion oscillations; Theories of elemental processes in combustion instability - a literature survey; A detailed discussion of pressure coupling with the surface flame zone; Experimental studies on the nature of the pressure - surface ...
Martin Summerfield, R. H. Woodward Waesche   +1 more
openaire   +1 more source

Dynamic characteristics of solid propellant combustion

Symposium (International) on Combustion, 1963
Combustion instability - response of solid propellant combustion zone to normally incident one-dimensional pressure ...
M.D. HORTON, E.W. PRICE
openaire   +1 more source

Review of solid-propellant ignition studies

16th Joint Propulsion Conference, 1980
AN extensive review of the literature on solid-propell ant ignition was made to establish the state-of-the-art. Various ignition theories, experimental measurements, and ignition criteria were critically examined. The review was summarized in easy-to-read tabular form to facilitate comparison between various studies. The effects of important parameters
Anil K. Kulkarni, Mridul Kumar, Kenneth K. Kuo   +2 more
openaire   +1 more source

Virtual prototyping of solid propellant rockets

Computing in Science & Engineering, 2000
Researchers seek a detailed, whole-system simulation of solid propellant rockets under normal and abnormal operating conditions. A virtual prototyping tool for solid propellant rocket motors based on first principles models of rocket components and their dynamic interactions meets this goal. Given a design specification (geometry, materials, and so on),
Michael T. Heath, William A. Dick
openaire   +1 more source

Downscaling of solid propellant pyrotechnical microsystems

TRANSDUCERS '03. 12th International Conference on Solid-State Sensors, Actuators and Microsystems. Digest of Technical Papers (Cat. No.03TH8664), 2004
This paper reports on the downscaling of solid propellant pyrotechnical microsystems. Sub-millimeter scale micro-thrusters were fabricated in silicon to investigate the limit of integration of this technology. The dimensions of the micro-thrusters chamber and of the igniter were reduced and a highly energetic solid-state propellant was used, the ZPP ...
Pham, P. Q., Briand, D., Rossi, C., de Rooij, N. F.   +3 more
openaire   +1 more source