Current views on gaseous detonation.
Detonation wave in gaseous media, current theories on wave initiation, structure and propagation
Lee, J. H.↗
SEARCH · Engineering Papers
Results for “Detonators”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Two phase detonation studies related to rocket instability, 1969 Annual report, 1 Feb. 1969 - 1 Feb. 1970
Two phase detonation relating to rocket instability
Nicholls, J. A.↗
Drop-size effects in spray detonations
Liquid diethylcyclohexane /DECH/ sprays detonation propagation in gaseous oxygen, studying drop size effect on steady state development
Dabora, E. K.↗
EBW firing unit-detonator compatibility tests
Exploding bridgewire detonator electrical input requirements, discussing waveform, peak current and time to peak
Amicone, R. G.↗
On the inadequacy of gasdynamic processes for triggering the transition to detonation
Gas dynamic processes insufficiency for triggering transition to detonation obtained from laser schlieren records of nonsteady flow field ahead of accelerating turbulent flame
Meyer, J. W.↗
Two phase detonation studies conducted in 1970 Annual report, 1 Feb. 1970 - 1 Feb. 1971
Two phase detonation waves in liquid gas systems
Nicholls, J. A.↗
Continuous detonation reaction engine Patent
Detonation reaction engine comprising outer housing enclosing pair of inner walls for continuous flow
Lange, O. H.↗
A simple theory for the propagation of film detonations
Detonation propagation velocity through tubes with walls coated with thin fuel film, using turbulent boundary layer theory
Nicholls, J. A.↗
A mechanism for the initiation of detonation in hydrazine/nitrogen tetroxide pulse-mode engine residues
Nitrogen tetroxide/hydrazine pulse mode rocket engines structural failure due to chemically reactive gaseous hot spots causing high pressure spiking and detonation initiation
Mclain, W. H.↗
Sonic boom simulation with detonable gases
Far field sonic boom pressure profiles simulation by methane-oxygen mixture detonation in balloons
Byrne, W. J.↗
Explosive gas blast - The expansion of detonation products in vacuum
Detonation products expansion in vacuum, measuring gas flow speeds and pressure profiles far from charge
Ahrens, T. J.↗
Nucleosynthesis in supernova models. II - The C12 detonation model
Supernovae detonation model, examining nucleosynthesis for solar system abundances
Arnett, W. D.↗
The effect of boundaries on the velocity deficit and the limit of gaseous detonations
Boundary effects on gaseous detonation velocity deficit and limit using approximation into boundary layer equations, comparing to experimental data
Tsuge, S.↗
Heterogeneous detonation supported by fuel fogs or films
Decane and hexadecane fog detonation propagation in gaseous oxygen
Bowen, J. R.↗
Theoretical analysis of a rotating two-phase detonation in liquid rocket motors.
A nonlinear analysis to study tangential mode shock instabilities in a thin annular chamber is carried out by employing a one dimensional two phase detonation wave as a reaction model. It is assumed that phase change and reaction take place only within the wave, which is treated as a discontinuity. The annulus is unrolled and the flow is considered as two dimensional with the coordinate system fixed on the wave front. Between waves, the flow is assumed to be isentropic with no interaction between droplets and burned gases. Jump conditions across the wave are solved for two phase flow. The average pressure along the injection plate is related to the design chamber pressure by the use of overall conservation equations. The wave strength is written in terms of the design parameters of the chamber. The results compare favorably with existing experiments. Finally, the effects of drop size on the wave strength are discussed and a simple criterion which sets the lower limit of validity for this strong wave analysis, is presented.
Shen, P. I.-W.↗
Lateral expansion of a laser-supported detonation wave in a gas.
A model satisfying the conditions in the burnt (ionized) and ambient undisturbed gases is presented for the two-dimensional case of the absorption wave resulting from the interaction of a laser beam with the plasma it generates in the gas through which the beam propagates. The flowfield of the rarefaction wave resulting from the laser-supported detonation is discussed, along with the computed shock and flow deflection angles.
Howe, J. T.↗
On detonation waves supported by diffusion flames.
An eigenvalue condition to determine propagation velocity of detonation waves in a tube is derived for the case where the oxidizer and fuel are in the gaseous and condensed phase, respectively, so that the combustion occurs only within the peripheral boundary layer. It is shown that the self-sustained shock propagation is possible if core streamtube constriction, due to combustion in the boundary layer, is strong enough to form a converging nozzle, and for a sonic throat to exist.
Fujitsuna, Y.↗
Time variation in the reaction-zone structure of two-phase spray detonations.
A detailed theoretical analysis of the time-varying detonation structure in a monodisperse spray is presented. The theory identifies experimentally observed reaction-zone overpressures as deriving from blast waves formed therein by the explosive ignition of the spray droplets, and follows in time the motion, change in strength, and interactions of these blast waves with one another, and with the leading shock. The results are compared with experimental data by modeling the motion of a finite-size circular pressure transducer through the theoretical data field in an x-t space.
Pierce, T. H.↗