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):4 ~( n/ h. @3 O; ~' E2 [
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Hyperloop Passenger Capsule
4 t% |, o; T- D) M2 V3 w: J1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
- C2 x- T' l1 t# B+ @2. Up to 60% of this air is bypassed:
+ f1 I2 I- n1 ^a. The air travels via a narrow tube near bottom of the capsule to the tail.
4 X. @ c7 S0 g; w( Rb. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
; y4 z8 a( l% s3. 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. 7 [" q, R7 }5 ]; ?, c# p9 @
a. This air is stored in onboard composite overwrap pressure vessels. 4 l9 ]% l7 j: S# m
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 6 t! b6 V# | U' n9 T3 F* l( n
4. An onboard water tank is used for cooling of the air.
* @8 a8 v* o" l8 ]2 a) Wa. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant). " e- x! K1 G+ p; F
b. The steam is stored onboard until reaching the station.
& ?1 a3 e( I1 {7 Pc. Water and steam tanks are changed automatically at each stop. 0 I% [( \* P! J R% c1 ~/ c
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 6 V, m/ d7 _/ Q, w+ ~' x' ~4 ?4 G& W
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
) P/ s: \2 E( j% 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. ( u7 `% j, D& s: }0 I7 O, N/ w
c. Onboard batteries are changed at each stop and charged at the stations. |
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