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）：
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$ e. |/ G( K; i: ~Hyperloop Passenger Capsule ( ]- Q* ]1 k, o K
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. $ b9 P* ^0 T' ~, S
2. Up to 60% of this air is bypassed: 9 @; i* {/ V% a9 _ A
a. The air travels via a narrow tube near bottom of the capsule to the tail. + I0 T+ N& i! V* B: ]6 y
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. & U. G3 A: s& z2 P+ |7 t# o
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. 4 ], N- |6 r' z' ]
a. This air is stored in onboard composite overwrap pressure vessels. % ~+ H- i0 ]+ \2 f8 a
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 5 \( d6 _2 G8 [! O0 ~
4. An onboard water tank is used for cooling of the air.
" f1 G; ^8 M1 Q% I) P+ Ya. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
( k7 l: b4 E T) M$ wb. The steam is stored onboard until reaching the station. ! k, F, Q6 G1 g9 V) }
c. Water and steam tanks are changed automatically at each stop. 2 ~8 \/ p- {" i7 ^# f$ G9 _/ W
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: ( Y0 @5 Q# ^; w1 U3 B% e
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. 6 t0 e6 X3 T% k2 P" ?
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.
+ X* o9 ~. f# ^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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