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）：& |: ? u* ~' J4 o+ g9 \
1 }3 I& Z- Y' ?0 |, b+ cHyperloop Passenger Capsule 0 \: h( u& S& Q/ l* P, i
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
) N: q' ~; r2 g" V ^2 c2. Up to 60% of this air is bypassed: & c& m" |$ q K- Q& [2 f
a. The air travels via a narrow tube near bottom of the capsule to the tail. ' `$ Z3 ~1 o" H2 t/ Z* r
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. ( j: z2 N5 t, M5 ]# m
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 a% L: T T. c; q1 o8 Q' Pa. This air is stored in onboard composite overwrap pressure vessels. & [( p+ k \7 b' `" V0 c: Q
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. " b4 P/ _& x$ D% @
4. An onboard water tank is used for cooling of the air.
6 H- T* V" N1 z- }# ga. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
1 U& C0 `4 M2 t+ m% |0 b rb. The steam is stored onboard until reaching the station. / y' m$ @$ e6 s( S4 T0 C! P' f0 L% K
c. Water and steam tanks are changed automatically at each stop.
5 k* ~$ L2 M/ z7 f+ c5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
3 C: s; I( r8 ~' F- ` M$ aa. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. . g) f- u/ u6 Y; x+ X: q1 M+ }3 G
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. L! I, u3 w6 W/ x, Q, H
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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