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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musk 的 electric compressor fan 在其计划书里是这么描述 （其中的一种）：) V% E' [2 }6 j% ~4 w' r
3 V. f0 I0 e# n4 vHyperloop Passenger Capsule
/ {: @0 t l* I9 ~1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
+ x }- W' x/ S% _0 q& t! M2. Up to 60% of this air is bypassed: 3 ^+ \* K6 [3 U7 h
a. The air travels via a narrow tube near bottom of the capsule to the tail. 2 M: P3 ?1 w7 W* T* k# d
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. + f2 z7 ?, ?3 o% x! u' @
3. 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. * {0 m: w; `) j2 @6 e" G% t
a. This air is stored in onboard composite overwrap pressure vessels. - o8 @, G0 @7 u1 ^0 H2 n
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. # O4 G9 a( @0 s, D3 j) u- _( F6 z
4. An onboard water tank is used for cooling of the air. ( U/ P5 Q4 z7 r# b0 V9 V @
a. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant). # s7 |8 ^8 O0 X; J5 P: f% s' @- v
b. The steam is stored onboard until reaching the station. 5 x7 n3 Q* e, I' d a
c. Water and steam tanks are changed automatically at each stop. ' O3 U, s# a, Y2 H
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 8 H/ \6 I9 `( a) @+ S
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. " Y& [: U4 E3 \; R5 _" q y
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.
2 M$ f& Z0 c ^c. Onboard batteries are changed at each stop and charged at the stations. |
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雷达卡
发表于 2017-10-18 12:30:25
显身卡
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