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）：+ n* O6 b; C ~1 X$ H3 g! O
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Hyperloop Passenger Capsule
0 C# F, d1 B1 \& U; |* D' p1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
3 H( f4 b: b: E; F2. Up to 60% of this air is bypassed:
; }, n2 z$ x7 ga. The air travels via a narrow tube near bottom of the capsule to the tail.
* b; _& |6 F, A( b: Db. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
+ u$ d0 X$ ] h; W3. 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.
$ `& E5 }& h; Ga. This air is stored in onboard composite overwrap pressure vessels.
& F8 e4 x8 V! Z; C+ U3 G9 I! I* xb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
9 p7 {( R/ k7 h* G* a6 w4 L4. An onboard water tank is used for cooling of the air. 9 Z4 U$ E! f( R' @! \
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). , U0 F) w7 q3 n# r: H# }+ ]( H
b. The steam is stored onboard until reaching the station. 7 q- l `8 o# [/ p
c. Water and steam tanks are changed automatically at each stop. U$ J% d. j/ f' K. o% X. v/ [) Q3 g
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: & Q0 g, o' K& W7 s
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
- M; Q$ h% x- b8 I. i* m2 Cb. 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.
) |; Q! J! i8 K4 |* j0 K: gc. Onboard batteries are changed at each stop and charged at the stations. |
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发表于 2017-10-18 12:30:25
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