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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$ }! O N2 [# p4 `$ \. G8 L7 fmusk 的 electric compressor fan 在其计划书里是这么描述 (其中的一种):: r2 j9 ` v! \6 t! Y
0 D9 j0 H. _2 s) `+ N$ AHyperloop Passenger Capsule ' U }) m( N. P" G# N5 Y4 {* {
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 4 w0 c/ v+ u, h# a3 R8 m
2. Up to 60% of this air is bypassed: / f- n8 Y4 m6 U0 v' w7 o
a. The air travels via a narrow tube near bottom of the capsule to the tail.
- K( r7 d$ N! |# @b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
: W4 }$ V: x* b c$ v3. 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. " |- b$ I9 _5 j3 \
a. This air is stored in onboard composite overwrap pressure vessels.
o* K9 T9 g4 nb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 8 s% Q0 o- h( u5 L# ^/ L
4. An onboard water tank is used for cooling of the air.
* t( J I! l0 C+ }' Ka. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
8 T2 N# u$ }4 e7 zb. The steam is stored onboard until reaching the station. # h5 K* c; P' B3 c" I
c. Water and steam tanks are changed automatically at each stop. ; {; R( v5 V9 Q4 u' C9 j; w: m. `
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 0 ?, d Y, h& z, q: n
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
, {7 F/ a, K u5 f0 Hb. 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/ U5 E" n1 [; |5 t/ Y
c. Onboard batteries are changed at each stop and charged at the stations. |
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