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）：" m& n+ [5 s$ `9 q0 g* N1 W Y
) }, ^$ o/ w/ K, @4 {5 L* C4 Q7 DHyperloop Passenger Capsule * J+ {& o6 U- W5 V1 [1 E
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 2 ` T" l" G3 f5 q
2. Up to 60% of this air is bypassed:
+ r9 Y/ s% [0 w& Y+ @# F( L8 {& Ia. The air travels via a narrow tube near bottom of the capsule to the tail. 3 V% ~$ x3 Z. c9 S
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
! D& ?- [4 H5 z# e% {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. 1 N/ T4 l; h$ p9 ?8 S/ [
a. This air is stored in onboard composite overwrap pressure vessels.
5 Y- ~; q: G5 jb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. I* R- c2 O8 d% x3 e( [
4. An onboard water tank is used for cooling of the air. 7 N+ D: q3 P6 D! B! ~- D4 |) f1 o
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). 4 ]# G3 F, U% j7 E0 T& A& @
b. The steam is stored onboard until reaching the station.
8 `. j& W0 I6 ]0 ` a- _c. Water and steam tanks are changed automatically at each stop. " ]1 V' R0 [1 b$ r
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
2 s5 W, s, h: d" n4 ja. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. / J6 e+ O0 r5 V( D+ ]6 w3 ?0 }
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. $ O5 g' }3 X* U7 M# O' n
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
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