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An introduction to project tubeflight

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GUIDEWAY OPEN EVACUATED SAFETY RELIABILITY SPEED OPERATING FREQUENCY GUIDEWAY COSTS OPERATING COSTS Fig. I.…
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suspension at high speeds. A simple way of obtaining large-clearance aerodynamic support inside tubes is through the direct…
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of the curtain momentum can be recovered for thrust. A comparative evaluation of existing methods of large-clearance fluid…
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greater curvatures in turns than any other suspension-guideway combination. This arrangement offers the best promise of…
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when very large clearances are used in the support of the vehicle. The speed limitations of conventional tube transport…
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central body of a jet engine, the outer shroud of which is represented by the wall of the tube. The tube-vehicle system may…
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• Fig. 2. ILLUSTRATION OF THERMAL PROPULSION IN TUBE
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and in the adiabatic dissipation of the attendant flow disturbances in the adjacent air columns. The power required is then P…
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power transmission has the advantage of requiring no extra rails or other structures. Most of the required equipment is…
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Fig. 3. VEHICLE WITH FAN~ENERGIZED TRANSFER FLOW
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A pressure exchange takes place in cryptosteady situations involving two or more flows. This situation is illustrated by the…
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Velocity in Fs Velocity in F o ~ V 0' Fig. 4. ScHEMATIC OF CRYPTOSTEADY INTERACTION 15
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Fig. 5. AXIAL-FLOW CRYPTOSTEADY PRESSURE EXCHANGER. Uld AND U2d ARE PRLMARY AND SECONDARY PARTICLE VELOCITIES, RESPECTIVELY,…
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Fig. 6. WATER PSEUDOBLADES IN AIR. STREAKS ARE PARTICLE PATH LINES
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pseudob1ades. Here water was used as the primary fluid, for the purpose of visualization. The flow of water is parallel to the…
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Fig. 7. VEHICLE !,\fITH TRANSFER FLOW ENERGIZED BY CRYPTOSTEADY PRESSURE EXCHANGE
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20 an electrically-driven compressor or by an internal-combustion gas generator. BRAKING The presence of large and confined…
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at widely spaced ports on the surface of the vehicle. An "energy separator", which is currently under development at…
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Fig. 8. SCHEMATIC OF CRYPTOSTEADY ENERGY SEPARATION N N
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23 of the energy of the hot flow is recovered in a variety of ways. Tube ventilation is, of course, an important requirement…
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24 8. Davey, G.M., Siegel, M.H., Burr, J.W., Cromack, D.E., "Flow field around a hollow cylinder mounted in a tube,…

Analysis of the effects of wall perforations on the performance of a vehicle in a tube

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PROJECT TUBEFLIGHT DUANE E. CROMACK ANALYSIS OF THE EFFECTS OF WALL PERFORATIONS ON THE PERFORMANCE OF A VEHICLE IN A TUBE
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TR PT 6808 ANALYSIS OF THE EFFECTS OF WALL PERFORATIONS ON THE PERFORMANCE OF A VEHICLE IN A TUBE by Duane E. Cromack This…
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ACKNOWLEDGMENT The author wishes to express his appreciation to Dr. Joseph V. Foa for his helpful suggestions and guidance…
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1. 2. TABLE OF CONTENTS ACKNOWLEDGMENT TABLE OF CONTENTS LIST OF FIGURES ABSTRACT NOMENCLATURE INTRODUCTION…
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