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):
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5 s7 H6 }/ m9 N; \1 z" x5 T3 m- H' qHyperloop Passenger Capsule
% X4 C+ S$ U/ x4 E0 o* X- u1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
# U2 B# X. ~6 { p$ O2. Up to 60% of this air is bypassed:
% B* V3 e$ R0 P6 Y5 G8 Na. The air travels via a narrow tube near bottom of the capsule to the tail.
$ Q: q9 E& s1 I' }! |b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. $ b6 z. h) Y# c0 G; @
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.
; ~9 b; \9 [8 h. {+ s) v! }6 Na. This air is stored in onboard composite overwrap pressure vessels.
$ t3 C0 l6 `& [4 ^: o. k8 pb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. / G/ U" q a% y+ V0 Z
4. An onboard water tank is used for cooling of the air.
* t) R# J# }( g6 |' e' w( a# ]* e4 Ra. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
; R4 A8 K8 b- k% ~" R. qb. The steam is stored onboard until reaching the station. ! r, }: Q2 E w# B# N- P$ M
c. Water and steam tanks are changed automatically at each stop. 9 f( j# i1 H1 A& h
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
/ _1 P6 I2 E+ e# D# E0 q/ qa. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. - W0 v6 ~: s& g- Z5 V4 q& P0 F
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. 5 ^# E! d% M6 X" M1 E! @% {) y
c. Onboard batteries are changed at each stop and charged at the stations. |
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