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Plane-flame simulation of the wake behind an internally propelled vehicle Part 3, experimental simulation of a supersonic…

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TR AE 6708 PLANE-FLAME SIMULATION OF THE WAKE BEHIND AN INTERNALLY PROPELLED VEHICLE PART 3 EXPERIMENTAL SIMULATION OF A…
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Ac knowled gme nt The author wishes to express his appreciation and gratitude to Dr. J. V. Foa for providing advice and…
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Tabl e o f Contents Page Abstract iv l. Introductioll 2. Experimental Apparatus 3. Experimental R~sults 4.…
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Ab stract Th e flow field induced by an internally-propelled vehicle traveling through a tube at a supersonic speed is…
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1 1 . I ntro ducti on When analyzing the flow fi e ld induced by an internally propelled v hicle trav e ling at a constant…
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2. Exper i me ntal Apparatus The experime ntal apparatus is shown schematically on Figur e 1. A 190 ft. length of copper…
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of arrival of the detonation is determined by means of piezoelectric ceramics, whose voltage output is used to trigger fast…
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3. Exe r i mental Re s ults The experimental results for a detonation propagating into a mi x ture of 30% hydrogen and 70%…
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On e ach of the pr e s s ure tra c e s there ar e smal l v ari ations ,.,hich pe rt urbate the smooth pr es sure de c ay .…
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history at various locations as predicted by the analysis for inviscid adiabatic flow. (See Appendix 3a ). In this instance…
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Figure 3 shows th e p~essure at various transducer locations plotted as a function of distance from the detonation front (…
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qualitative d esc r i pt ion of th e pr ess ure hi story (an in i tially v e ry st e p p re ssur s l o p e and subsequ e n t…
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4. Conclusions Since the flow field tnduced by a ~etonation is qualitativ ly similar to that induced by a supersonic…
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10 5. APPEN ICES Appe n di x 1 . F i lling Pro c edur e and Determination of Initial Conc e ntrati o ns In o rd e r to…
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Ap pend i x 2. Instrumentation A. Pressur e Measuring System The pressure history behind the detonati o n is measured with…
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where V is the voltage output of the system, C is the input c apacitance, G is the gain of the amplifier, and k is the crystal…
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The vertical d e flection of the oscilloscope can be r e ad to an accuracy of + 0.0125 volts at .5 volts/cm. Therefore…
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b e t we en any two transducer positions is th e sum of the risetimes of the pulse generators and the osci lloscope plus the…
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App e n di x 3. Theoretical Pressur e Histo r ies A. Pressure Histories for Inviscid Adiabatic Flow The pressure histories…
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The major difference is that in the present case L." canno t be chos e n arbitrarily. All of th e state variables on the…
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6. References 1. 2. 3. 4. 5. 6. 7. 8. Foa, J.V., "Propulsion of a Vehicle in a Tube," Rensselaer…
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TABLE 1 Pressure at various locations at corresponding times after the passage of the d eo ntation. (Inviscid Adiabatic Flow…
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VACUU M PU M P T U BE 1/211 ID DIAPH RAGM 6 TRA NSDUCER LOC ATI ONS D I A PHRAGM 1 2 3 4 5 6 till] J4 D 0 0 D…
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\ I I \,~ I -- VERTICAL ZERO~ + HORIZONTAL ZERO VERTICAL ZERO-.7 , + HORIZONTAL ZERO -- , -- -- - I…
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~B 52 48 44 40 FIGURE 3 A - POSITION 8 - POSI TlON 3 C - POSITION 5 THEORY INCLUDIN G FRICTION AND HEA T TR AN S FER…
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