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）：
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& ?# Z' K5 @0 j7 E8 y; hHyperloop Passenger Capsule
( `# h) j* n! |* ^, e* W; @' F7 s6 c- p1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. ; @( n% O) B* e; J W7 G: E! l/ R
2. Up to 60% of this air is bypassed: - k, @1 B5 n9 D5 J5 T% u" w- p
a. The air travels via a narrow tube near bottom of the capsule to the tail. 1 g* _1 a1 U- m2 C2 `/ _
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
2 z/ w0 V5 S5 b4 E3. 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. * L# L) j7 E8 J
a. This air is stored in onboard composite overwrap pressure vessels.
9 B- \# j8 j0 i' _( m+ p i" Xb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
$ Q: K0 Q+ o8 ^$ i" w- d4. An onboard water tank is used for cooling of the air.
5 C! c% y1 m. Ea. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
* _- j: K0 H: Lb. The steam is stored onboard until reaching the station.
' ~$ I# b( M3 wc. Water and steam tanks are changed automatically at each stop.
- g) h6 u3 F& G4 i+ C$ k6 U5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
) h" o7 E$ m9 E; p6 ca. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. B/ e. w& b) M1 {8 A$ p- i" 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.
1 a9 e g. H2 f7 q/ m% N. _; yc. 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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