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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2 P$ C0 Z' O7 |( F' xmusk 的 electric compressor fan 在其计划书里是这么描述 （其中的一种）：
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9 M! g. V4 }6 A# dHyperloop Passenger Capsule
1 E" h4 P# m& R9 ]' N" D, k1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
1 P$ s s+ A( B" _2. Up to 60% of this air is bypassed: 3 f$ g- T% t: l
a. The air travels via a narrow tube near bottom of the capsule to the tail.
5 F& }- j5 {8 N" \ u8 z7 q" ab. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
& m0 t2 v- b: ^0 E& v+ i. A! z& z2 V3. 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. * C4 r4 B, j. U4 R6 y
a. This air is stored in onboard composite overwrap pressure vessels. 8 O7 ]0 }5 r. _
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. - h9 a/ }9 B8 s* G2 N# _+ i; m( e
4. An onboard water tank is used for cooling of the air. , ]( z/ W* x7 A- h1 e$ |1 y
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).
& w' ^: N) u* ^6 C, d, `1 e: Ib. The steam is stored onboard until reaching the station. ' @ ?( d) U1 w! G H* B
c. Water and steam tanks are changed automatically at each stop.
# k F% c4 C: b- f# s5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: % ~1 }9 ~. C7 b# {
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. 2 m8 x( r7 o2 X' u
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. 2 ]' `! f4 F2 J' x$ Y7 f
c. 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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