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):( r& P) v/ p; i2 A, T; M: K, j
0 v# a. E( l" Y, [0 OHyperloop Passenger Capsule
- ?1 G4 f0 g4 b1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 5 @$ {/ U2 M. g' s5 V9 v
2. Up to 60% of this air is bypassed:
! j; z+ u; [! k, v, w( i( `a. The air travels via a narrow tube near bottom of the capsule to the tail.
0 r8 \( X- l3 v+ B( X. ~b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. $ h3 Z2 Q2 U1 _$ U0 y1 e
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.
0 v$ @3 l T3 B& H& la. This air is stored in onboard composite overwrap pressure vessels.
& p) \8 k7 e" D+ X( q3 Eb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. ! X9 k, k& {; A7 O$ K; t! h
4. An onboard water tank is used for cooling of the air. 5 {7 K( V2 U4 k# m6 u. d$ 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& J2 H6 u- d/ Q& T6 l1 P& db. The steam is stored onboard until reaching the station.
o- V* _/ t# j( _% D# ]c. Water and steam tanks are changed automatically at each stop. : P% V/ \4 s! U/ |- m I
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 2 r- C# `0 o) \. K
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. 4 R) Y) S8 d" Q. a4 P
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.
$ _" y0 t( D, r1 n+ S" N+ f/ x" rc. Onboard batteries are changed at each stop and charged at the stations. |
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