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）：8 B4 r( h; r, }1 [: O
! m+ e! `5 Y7 UHyperloop Passenger Capsule
/ w9 t' J0 m! h2 m" y; s( Z( `1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 1 C5 l8 ]9 [1 K# u4 f
2. Up to 60% of this air is bypassed: , |. ^" \' G9 X7 b6 ~" I
a. The air travels via a narrow tube near bottom of the capsule to the tail. # o0 y' E# z+ v* m! ]
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. s# `4 ^/ K! s0 ^/ X, X1 }
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.
+ l0 q+ \8 S" a2 }a. This air is stored in onboard composite overwrap pressure vessels. 0 |6 w, R6 e% ]: U# N, ^
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
$ l0 F: u! L7 m4. An onboard water tank is used for cooling of the air.
; s9 S5 ^: [# M+ D. a6 Ma. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
* o0 {7 I, a3 Q Db. The steam is stored onboard until reaching the station.
1 _/ |3 k. |" H. _4 B: ]c. Water and steam tanks are changed automatically at each stop.
% i+ u! N: B: N0 ?+ V+ t' z/ x, H1 \4 x5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
# @# r F( J2 v; Oa. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
% F/ S4 E2 F; D4 Y6 K- Ob. 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. & }) P r5 i% p% h" w0 ~3 }
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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