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High-speed mass transportation, a new concept : an exploratory study by members of the faculty of Rensselaer Polytechnic…

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B-4 air-support devices. B-2. LEVAPADS In the levapad or air bearing, high pressure is intro- duced within a narrow gap…
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B-5 .05 inches is indicated, and even if the pads were flexible or otherwise articulated this is also quite impossible. It is…
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B-6 outside. With a set of four pads arranged as before, the pumping horsepower requirement can be shown to be approximately…
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B-7 performance of this system at cruising speed somewhat uncertain, and probably not very economical. B-4. RAM WINGS The…
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B-8 curtains could be used to reduce tip effects, at a power loss which by simply increasing the ram wing aspect ratio could…
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B-9 dimensional incompressible flow, and it is clear from the table that for adequate support below cruising speed, the lift…
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B-lO 3) Levapad or air-bearing support would appear practi- cable if at all only for operation in the near vicinity of…
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--------------------------------------------------------------------------------------- SECTION C EIECTRICAL POWER SUPPLY by…
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C-l C -1. ABSTRACT For the high speed tube transportation system, elec- trical power is proposed as the main source of…
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C-2 method is the more practical approach. There are several schemes that may be used to transfer electrical power to the…
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------------------------------------------------ C-3 appears to be advantageous as mentioned in Article A-2. Again…
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c-4 loading on the vehicle would be symmetrical. The advantage of a scheme of this type is its simplicitYj however, high…
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power can be delivered across an air gap by means of a magnetic field. C-5 More specifically, the power can be transferred…
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c-6 at several hundred cps. Even the 80% efficiency obtainable at 60 cps. is quite good compared to the efficiency of the…
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each other, that the tube diameter would be about 18 feet, and that the bulk price of aluminum would be about $.25 per pound…
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c-8 the 20,000 volts required without any capacitive tuning. Heating losses in the tube and vehicle coils pre- sent a heat…
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C-9 A thin ring, which can also provide aerodynamic lift, is built around the vehicle. Three sections of this ring compose…
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C-10 (d) Microwave For the microwave scheme, a power level of 5 to 15 megawatts will be required. Microwave power at…
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C-ll a) DC to RF conversion should be possible at about 800/0 efficiency. b) Transmission guide losses in a tube with a…
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C-12 careful cost comparison with the use of fossil fuels. The receiving system would consist of loops in either the z - r…
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C-13 fixed, the relative motion between the flux moving along the tube and the vehicle would be greatest at starting. Forces…
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c-14 radio frequencies to the vehicle using the tube as a waveguide appears feasible and attractive. There seem to be no…
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ELECTRICAL _ _ _ ----.. POWER CONDUCTOR VEHICLE ----.. TUBE---- FIG. C-I 3-PHASE POWER SUPPLY
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WIPER FIG. C-2a FIG. C-2b II II II II II II II II IL- -.II I I L ___ .J FIG. C-2c TUBE-MOUNTED CONDUCTOR…
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CAPACITOR PLATE INSULATED GAP A B FIG. C-3 VEHICLE MOTOR TUBE FIG. C-4
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