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）：; u1 r5 ^0 L: ?' Z; G
$ p0 b7 h8 O8 w7 c4 }8 jHyperloop Passenger Capsule % c t1 I; w* O2 }- ?4 x0 n
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
) c* S6 `' b3 t# C2. Up to 60% of this air is bypassed: ; u$ V2 v3 f+ ~2 o" X
a. The air travels via a narrow tube near bottom of the capsule to the tail.
" c3 P! @! \% R3 w; u5 jb. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. 8 ]/ D# c2 X- j( r$ x% R
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.
) d8 Z) L' y0 L) u; ma. This air is stored in onboard composite overwrap pressure vessels.
: S" y5 F% \ g0 C1 Ab. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
& F# J" G% C& o+ p9 c! m4. An onboard water tank is used for cooling of the air. 4 ^, D& w& o) }: Y, W! m" U
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). + X3 {! O. H5 X) h9 b- [" m
b. The steam is stored onboard until reaching the station.
; K! _% e5 ~3 F# x# e8 @c. Water and steam tanks are changed automatically at each stop.
6 i, C" v; v. t8 I& P4 Y5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 5 Y0 N$ E" w6 f; {% O+ M
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
# F" B* p$ A' ]8 M+ i$ ob. 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. 0 P* l9 `* W5 ~: ^/ z
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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