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
* C$ O3 Y0 d% P8 _# |1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. [- h4 s( S0 r; c |
2. Up to 60% of this air is bypassed:
0 H: T9 _( l, K2 v( za. The air travels via a narrow tube near bottom of the capsule to the tail. ; D- X* Q5 ^7 O* J5 W' ] @
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
$ z2 f+ h. ` w3 E( Z3. 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.
, i) W0 S% }$ r) z* v, Na. This air is stored in onboard composite overwrap pressure vessels.
% l7 R& c" b1 A% Y- i# \b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. % G9 K) C+ c7 ]4 k( {
4. An onboard water tank is used for cooling of the air. * D2 x* t, e' Z3 G
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). 1 v s+ p1 N' ~0 g4 V) @9 _
b. The steam is stored onboard until reaching the station.
/ ~) c' [; M8 ~$ B# rc. Water and steam tanks are changed automatically at each stop.
6 i6 i8 V! A# p$ {6 x: E5 @0 L5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
% f+ x* S+ z7 I/ o7 G8 f! s) ca. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
) ?7 M, t* v$ m+ O( f4 H( ]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.
% `3 q' N2 p- r4 C+ D2 D; W+ Zc. 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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