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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$ C, y, P( t/ ~) ^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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- l: I& q7 u2 {Hyperloop Passenger Capsule 7 r$ I; q+ c) Q$ P I
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
$ i& j3 o) X% S& n7 y: A4 B$ J9 }. a2. Up to 60% of this air is bypassed: : Y- P! p# M9 T' C
a. The air travels via a narrow tube near bottom of the capsule to the tail.
# T% T! }% w1 t- F! }& \) Z' hb. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
4 L' `0 H. H& t1 x4 X) v4 O) _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. 3 G8 c9 N+ j! R. r% g' w4 C7 L' o+ M! F
a. This air is stored in onboard composite overwrap pressure vessels. . X6 K& }) y, C$ Y" C o
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. " b, Q) G! t1 r' B& o
4. An onboard water tank is used for cooling of the air. ) b4 ~3 w5 y5 m3 Z' u6 v
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).
' \ z% P1 U8 l5 ]; ]3 o% Eb. The steam is stored onboard until reaching the station.
7 p; n# q9 z4 {3 Gc. Water and steam tanks are changed automatically at each stop. 2 e& L5 s5 k' H) M/ V- H- b" X" k* N
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
7 j- _5 u0 g z( j. v6 _a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
( A- n7 N# t. i& E% d; V1 \4 B+ Qb. 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.
' L# @5 A6 j7 O4 S2 Cc. 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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