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 [( u; G5 p: }, Q& G, y: n5 cmusk 的 electric compressor fan 在其计划书里是这么描述 （其中的一种）：
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! G1 M- ~$ R- \2 w. S: p" v' aHyperloop Passenger Capsule % j( P' y& e r5 O
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 7 ]9 A }! @' R! x0 r6 P- b) d
2. Up to 60% of this air is bypassed:
R& z* N1 c: d' ua. The air travels via a narrow tube near bottom of the capsule to the tail.
; v. G$ Z3 O8 s) [* o. T; Db. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
" C: t4 z. @- E* G5 p% F3. 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. ' V* a: y: j, Z& f p! f. Y8 G
a. This air is stored in onboard composite overwrap pressure vessels. 6 }) \* f) |# [0 i4 Z
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 3 t0 Z4 e; A- V, x7 a1 N
4. An onboard water tank is used for cooling of the air. ) } u' L2 F6 k' S7 [
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). 7 v& z4 D* G0 \5 \* h
b. The steam is stored onboard until reaching the station. ! E% |/ k! g; K3 F# H k
c. Water and steam tanks are changed automatically at each stop. ! K6 ]0 |, X7 p1 W
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
5 M2 e; D' Z t5 Z! U1 u; e8 Da. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. 2 }- I4 |# j) j7 _1 N- R
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.
* D( @2 B: P& i Dc. 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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