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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Hyperloop Passenger Capsule ' U+ W0 x5 f6 n3 u; O
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
1 u2 x+ b. |2 T# _( _( v2. Up to 60% of this air is bypassed: : P9 r9 ^6 m7 @; R
a. The air travels via a narrow tube near bottom of the capsule to the tail.
1 ]; F/ u* Q7 U$ s3 [b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. B. E, Y0 i B7 w1 R
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. 4 q% u- M, X7 L! {
a. This air is stored in onboard composite overwrap pressure vessels.
0 v, L8 ~9 r" n) U1 `6 |b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 9 G; d9 F9 |$ O7 a& Y
4. An onboard water tank is used for cooling of the air.
$ U5 ?0 ?$ r, `8 g& |* ea. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
7 s' c( ?" y) ib. The steam is stored onboard until reaching the station.
, m- F4 J2 R6 B: Y% P# Rc. Water and steam tanks are changed automatically at each stop. 3 H' N9 R" ]& V: q1 T( l M* ~) m
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 5 K9 }, k" ]9 e
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. , T+ A' t1 d5 i
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. + V4 [) D7 |- P5 f& \# k4 H* ]$ Q
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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