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
5 Y1 G- G* ]0 F9 T1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. 7 q, w# m& \! @3 [4 M
2. Up to 60% of this air is bypassed:
/ \5 o2 S* F8 Ca. The air travels via a narrow tube near bottom of the capsule to the tail. 4 `3 {4 {: B! r
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
8 [; v' K8 w( Z/ u% D' S3. 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 d; R$ v2 b5 N* H' w
a. This air is stored in onboard composite overwrap pressure vessels.
( S5 _$ q+ U H+ Xb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 0 I; i; h0 |7 ^1 M+ _
4. An onboard water tank is used for cooling of the air. 6 [! u; u. X; E5 g* X; _
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).
8 L2 T: a: i& U2 A' B& ]b. The steam is stored onboard until reaching the station.
3 f0 N- h" o6 S0 ^c. Water and steam tanks are changed automatically at each stop.
1 [8 B p o' _* u M4 K5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: & z( K+ n9 H& Z+ G# e, m
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
% y# s6 x+ ?3 H2 P$ O 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.
$ d6 D8 c+ C$ S4 w2 S+ wc. 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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