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 m" \. e7 ~$ R9 U8 }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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, E( K& v2 a3 i/ a' e0 aHyperloop Passenger Capsule % ^1 M' d D" ?' A9 b' X
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. * N2 a8 e; Z: k M5 u
2. Up to 60% of this air is bypassed: ) w2 r; n4 B2 P% i# @9 Y8 y' X
a. The air travels via a narrow tube near bottom of the capsule to the tail.
/ G F$ h* m. t9 F9 F* R+ Wb. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
. j" Y0 a7 |# D+ |% j9 Q3. 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.
' o0 I' ?- M; K! a% ha. This air is stored in onboard composite overwrap pressure vessels. & G; }: Q, i* W' @! {+ r
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 9 B+ P, C( k% ~
4. An onboard water tank is used for cooling of the air.
- S8 t* z6 z! H$ Ha. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant). x8 L7 }+ h% d+ i' c3 z
b. The steam is stored onboard until reaching the station.
$ z2 p2 G5 I, |8 H( ac. Water and steam tanks are changed automatically at each stop. 8 i, C6 r; K1 K: j7 L8 u3 L
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
& Y1 P5 C: b# G3 c L9 ^! ma. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
( a9 n8 w& @, V yb. 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.
" I8 O \( h8 j$ E- f% y6 `c. 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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