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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$ P- }5 M0 l8 D( Ymusk 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 . W1 }# g2 p, @7 B3 m
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 3 F1 g' @* z3 x( B5 d
2. Up to 60% of this air is bypassed:
" W8 ?& T1 ~2 R. I9 o7 Da. The air travels via a narrow tube near bottom of the capsule to the tail.
t% P- E4 t: L b- J: fb. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
% O8 Z" Z( o# m- D \: f j3. 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.
' D3 r3 h7 k) E3 V" m }, r# la. This air is stored in onboard composite overwrap pressure vessels.
* A* v3 h' A+ T3 Rb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. : y6 |! b/ O9 R, A4 y: m! ?# |4 }
4. An onboard water tank is used for cooling of the air. ! j% A$ C' s4 j9 b& i: z, 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). 8 D8 Z! K" Z% Z
b. The steam is stored onboard until reaching the station.
- E1 R0 m* q) V( z" w' v% w, Z! bc. Water and steam tanks are changed automatically at each stop. , Z- Z2 U/ v- R9 o% ?
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: ! U# f, }- Z. i& a! ?
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. 2 J% R/ F/ T# ]* X( z
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. 4 C0 m2 {9 R: l) c. _2 X: ?
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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