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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* Q) v- P( b; t9 d5 Q) N( O, J% R0 e( QHyperloop Passenger Capsule ( q2 Q. c; L9 q6 F7 t2 V
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
7 a4 O8 f3 z1 _" _4 w9 @2. Up to 60% of this air is bypassed: 2 a4 @' A9 t8 \- `0 m5 W5 v: ^
a. The air travels via a narrow tube near bottom of the capsule to the tail.
+ _# M6 d% b3 [4 [3 H0 ib. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
: g* F6 r; i R# N- j u; c1 r3. 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. . l! R7 ^: V. N3 H
a. This air is stored in onboard composite overwrap pressure vessels. + Z5 T/ S8 y5 h" P/ A
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
- P$ I) s. j6 i1 K4. An onboard water tank is used for cooling of the air.
- }- T8 w& N. a3 [9 ?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).
9 u2 A" Y! O7 U9 a3 X9 zb. The steam is stored onboard until reaching the station. , t+ ?. E* t+ r9 N7 Z4 f9 N4 A
c. Water and steam tanks are changed automatically at each stop. 8 g- q! V7 U: B) B! Z$ ?/ E/ T, J- L
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: # r) c8 K) _/ ?
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
7 v: c* t* d2 J- w7 sb. 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. 1 U, w, Z9 n1 O" D' a3 a
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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