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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Hyperloop Passenger Capsule + h# ~2 Z2 x: v! c6 y. `4 u [
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
/ f% ?6 i2 |$ K% V2. Up to 60% of this air is bypassed:
. t& E9 P- f4 ^* n* k0 Ea. The air travels via a narrow tube near bottom of the capsule to the tail. ( v4 Q3 N# N4 B1 i6 x
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
* L* f" n b) L$ Z' D* M# G3. 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 H& B9 T2 W) z6 o8 {' O% T* X' `2 Sa. This air is stored in onboard composite overwrap pressure vessels. 0 F+ ]6 s* A: F! @; b8 j' n1 e( z9 ]
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
! D. ]' c6 u" x4. An onboard water tank is used for cooling of the air.
) m5 Q0 A0 M# F% z' @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). 3 s2 H/ Q& u4 g5 q$ s
b. The steam is stored onboard until reaching the station.
! ^' {( I& V" Cc. Water and steam tanks are changed automatically at each stop.
9 g+ K1 Z5 D" L- z5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: {0 _) ?9 W% W* v
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. : W( ^! f; ]: V
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.
# S3 B8 f t& B1 i+ h6 S2 D( `5 w6 hc. 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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