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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6 j* H; S8 }5 B6 c4 w" Pmusk 的 electric compressor fan 在其计划书里是这么描述 （其中的一种）：
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% r8 b; Z( } q0 _/ ?# P `# vHyperloop Passenger Capsule
8 F; D% z7 G M! H4 w6 ]1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
# \& `( b& l* F# M. k2. Up to 60% of this air is bypassed:
5 k7 b/ b: d2 ]2 P Z$ w+ |) x+ ca. The air travels via a narrow tube near bottom of the capsule to the tail.
, c5 j; j3 K+ h" ob. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. * @! E8 {' ?! Q) O2 S+ @3 n
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. - }+ F+ P# A" y8 c5 n8 ~
a. This air is stored in onboard composite overwrap pressure vessels.
* Q7 o2 j k- a4 G# A) Zb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. / ~0 ]% c+ p/ p! S( ^ N
4. An onboard water tank is used for cooling of the air. $ i2 X2 ~ |6 H) j+ K3 m6 F
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).
: n0 U H) }) {b. The steam is stored onboard until reaching the station. / p5 Z8 X. i* J
c. Water and steam tanks are changed automatically at each stop.
& c# y" E! I, Z* g6 u5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: . P2 t! ^8 G; [
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. 3 y% G8 M, l& k4 A% ^
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.
P3 b" [3 X7 \1 |3 Jc. 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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