TA的每日心情 | 擦汗 2019-6-16 23:34 |
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签到天数: 1277 天 [LV.10]大乘
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; O1 [3 K3 ^# H$ j+ C0 H: {musk 的 electric compressor fan 在其计划书里是这么描述 (其中的一种):
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Hyperloop Passenger Capsule
( ~) z3 Z% T$ j" t1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. C! L0 M5 B+ b3 U
2. Up to 60% of this air is bypassed:
9 V% D1 L# d% O* G3 [a. The air travels via a narrow tube near bottom of the capsule to the tail.
0 ~! C! i8 b: S+ P2 S6 d- ]b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
m- s! k& M+ f, b4 Y3. Up to 0.44 lb/s (0.2 kg/s) of air is cooled and compressed an additional 5.2:1 for the passenger version with additional cooling afterward. 4 ^5 F/ i" F' z/ ]/ P
a. This air is stored in onboard composite overwrap pressure vessels.
. o( j8 M2 |0 v" i% g: Gb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. + v1 u8 O9 H0 T* Q% \3 A" B) `
4. An onboard water tank is used for cooling of the air.
8 X/ F; |$ h1 b( N6 y" M" ea. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant). 7 Q; ?; |* d$ g7 L( O$ y6 M
b. The steam is stored onboard until reaching the station. * r$ d% Y. T2 R: Y; X$ O2 W
c. Water and steam tanks are changed automatically at each stop. 4 n h3 ] W3 m
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
* P' ^) l$ g0 u, x0 S. G5 Ta. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. ! Q R9 k0 G, P2 M7 _
b. An estimated 3,400 lb (1,500 kg) of batteries provides 45 minutes of onboard compressor power, which is more than sufficient for the travel time with added reserve backup power. , u9 t% p6 }" u0 j6 o) U! B' N
c. Onboard batteries are changed at each stop and charged at the stations. |
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