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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7 ^* V( B1 |* M/ t; M3 `musk 的 electric compressor fan 在其计划书里是这么描述 (其中的一种):9 X) o! f: |, [9 W) ^) M9 U3 T
/ f. n9 Q$ O* \; L4 Y1 |# h6 wHyperloop Passenger Capsule
) v" s! Y2 `) x: \1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. $ h2 b) o5 j4 n* h% l1 W: `
2. Up to 60% of this air is bypassed: ) O. O- y) w8 o4 `5 O; [& M
a. The air travels via a narrow tube near bottom of the capsule to the tail.
) }8 l+ ~+ ` [" [" U4 `* ]. L! u3 Ib. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. & T) {# Z: s4 b5 U; V
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. 3 h( v( p$ m% f# k5 W5 \, z# G
a. This air is stored in onboard composite overwrap pressure vessels.
" ^' a' H3 `4 a. u% m& G; G: @b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
* g2 X, A7 R+ V% d) a% J2 v4. An onboard water tank is used for cooling of the air. 8 i- z" M+ b2 J0 k& [
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). % |5 G" F+ S% j
b. The steam is stored onboard until reaching the station. 0 f8 f; \7 `6 m/ a d
c. Water and steam tanks are changed automatically at each stop.
9 m$ h+ A: ^7 P! ~" ~5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
v6 \# w# A+ j0 b. z4 la. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. # S# e/ E1 Y' d& J6 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. ' {! I4 f" @/ K L0 H4 U
c. Onboard batteries are changed at each stop and charged at the stations. |
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