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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8 L. |) ?( I! F$ i5 q0 `! p, C' Fmusk 的 electric compressor fan 在其计划书里是这么描述 (其中的一种):4 p/ D/ C: Q$ \5 t+ |
v; z) [0 a- H9 q' ~! HHyperloop Passenger Capsule / o* k! I% [0 ?# t0 {- J, F2 T
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
; [0 _7 S6 d, e" e3 t2. Up to 60% of this air is bypassed: ; E( n! o' I) S& F, g* o8 r
a. The air travels via a narrow tube near bottom of the capsule to the tail.
; q. P$ s& E# Y2 n6 E8 Ab. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. & z. e& G3 X7 ^/ n, X2 C/ Q
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. + w N" U5 L* K) C/ ?
a. This air is stored in onboard composite overwrap pressure vessels.
8 B3 K3 A" D2 @2 Pb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 4 \& j" s% f: u R+ h N- M9 n7 G
4. An onboard water tank is used for cooling of the air. 3 G+ Z0 ~. F; u8 B2 l: z C
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).
& y3 l8 _ D, |# gb. The steam is stored onboard until reaching the station.
; D' `: G* e5 i% vc. Water and steam tanks are changed automatically at each stop. 9 u) V' y, N/ Q( l6 A7 ~
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
8 F; G$ g8 U) `a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. + N# J; ]& h! O: U' O0 H9 m
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. + G j. Z2 u8 n3 o+ F
c. Onboard batteries are changed at each stop and charged at the stations. |
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