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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c" o2 N l, r+ @ ^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
' R4 I, u3 n$ w/ T/ W1 k1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 4 H( P2 e% {7 D) t% I" j. X. C" H
2. Up to 60% of this air is bypassed: J v8 i: \! p6 g4 g7 R$ c
a. The air travels via a narrow tube near bottom of the capsule to the tail.
1 `+ K* s, I$ r6 p! ?b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
3 n, _9 ]' A' K9 P% t3 T3. 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. 1 a! y2 K }5 a/ d2 Q! x2 Y
a. This air is stored in onboard composite overwrap pressure vessels.
( j" v0 i( w6 F1 t* jb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. & b3 n4 Y; e$ L8 E
4. An onboard water tank is used for cooling of the air. B5 n1 _6 L" V# }
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). % C$ a8 D6 W' D. s5 U0 Q
b. The steam is stored onboard until reaching the station.
+ t$ G S* Q$ A* ]c. Water and steam tanks are changed automatically at each stop. 9 ]4 m& g. o2 v: u, a7 K9 `& E
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
5 ]4 E4 }- Q/ Z7 I- f0 g3 U* va. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. 8 w% F/ ?3 V' M+ b/ e# L
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. 1 z w) K2 T8 U
c. 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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