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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- E( W9 s( L- W7 g" [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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+ s/ j: K! @2 B+ y' LHyperloop Passenger Capsule
8 C: v. d: E! x2 t t- u1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 6 x( E# `0 h: @# S. ~% \! O& C
2. Up to 60% of this air is bypassed: + v$ H7 H& V( P+ V
a. The air travels via a narrow tube near bottom of the capsule to the tail. , \/ F e$ z( J c) _7 F( q$ J" {
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
5 I1 S- g" x( U! A" H3. 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 F. D6 j! `" a v0 Va. This air is stored in onboard composite overwrap pressure vessels.
5 b, k4 y! b' e* {. Sb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
" v. z5 _2 e: [0 @: f m4. An onboard water tank is used for cooling of the air. 7 M; ?- n- n3 s/ q3 Z1 @# I3 n
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). 0 c" I- w) }& ^7 ?$ D
b. The steam is stored onboard until reaching the station. / c% O, [ b2 g
c. Water and steam tanks are changed automatically at each stop. ' r; u& V. u \$ ?4 H0 T' o3 ^+ u
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: ( x2 O" A _4 R* D6 H5 V; [ B
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. ) X5 x! J( Y# s/ w5 X' Q
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. ) ]! b4 G* e% L, [, O5 l
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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