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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! c5 o. O" o$ k4 }0 N8 r- y7 |4 bmusk 的 electric compressor fan 在其计划书里是这么描述 (其中的一种):
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& |: U) y( u8 ^Hyperloop Passenger Capsule
$ ^* r) o! @; e/ J. H( X% c/ Z, q1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. : [ N9 S0 a6 ?; M
2. Up to 60% of this air is bypassed:
g. n5 }5 l, ^3 Ja. The air travels via a narrow tube near bottom of the capsule to the tail. 6 m e \ ^4 R) l3 N
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
/ u+ v# Z$ I* }0 J1 P, q- ?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.
1 f3 E6 l( Y- E; z6 Ua. This air is stored in onboard composite overwrap pressure vessels.
2 t% ~ B2 c) i9 z! v) i; P; ]8 Cb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. & i2 Z* \3 r4 X
4. An onboard water tank is used for cooling of the air.
3 u7 i2 _0 w/ ka. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
* S9 L I% j: F9 R4 ]% i, J" Tb. The steam is stored onboard until reaching the station.
( b- Z: V: g$ w" gc. Water and steam tanks are changed automatically at each stop.
5 M) E2 \3 ], @5 n5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 4 x* j8 M2 b* |% P, c) e- Q
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. & q# L5 k+ `4 u9 Y0 R4 y
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.
4 ?; ]8 Y% H; bc. Onboard batteries are changed at each stop and charged at the stations. |
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