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）：3 p' | d# X1 G8 T
/ x& I! L" R2 w5 d5 J vHyperloop Passenger Capsule
v8 [5 _& g; F! W# J2 {9 i1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 5 _# V. l3 s( j, s8 P
2. Up to 60% of this air is bypassed:
) L; c0 T8 i4 v4 r& V9 B$ ha. The air travels via a narrow tube near bottom of the capsule to the tail. ) E% y: c9 x( L) K# {$ i* C3 h" M
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
' [0 I$ {2 u( F( [ I7 _9 y2 k9 p3. 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 e. A' g4 r) u! ]4 w7 N2 i
a. This air is stored in onboard composite overwrap pressure vessels.
, ^0 w- L, N, k1 S, c" kb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
7 A0 i3 G9 I5 [6 c4. An onboard water tank is used for cooling of the air.
6 a: z4 z2 `% d1 [: ? ]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). 6 v8 ~/ y1 w3 C% v' n$ O
b. The steam is stored onboard until reaching the station.
1 `1 j2 z" p7 o6 C. @c. Water and steam tanks are changed automatically at each stop.
$ [! N, Z% Q6 G& ]% [6 K6 O6 n5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: " o2 w& y# n% f2 }
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. ; N+ F, o8 Y: ]( V* q
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.
* F% ^( W4 S, t) N Lc. 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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