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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9 ]$ P$ J$ c m; [+ c4 z* X0 fHyperloop Passenger Capsule 7 E# D; z& E! e: ]$ g! U, f
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. ! \) ` x- N& c# N8 S1 V) U+ B/ x
2. Up to 60% of this air is bypassed: 4 g7 r+ h' x; H- l) `* Z
a. The air travels via a narrow tube near bottom of the capsule to the tail. ! `. l0 n1 d) d6 ^/ p, [
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. 4 l* l; i& L/ j9 G: y
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.
7 C$ R+ x# N- D- S0 o6 ha. This air is stored in onboard composite overwrap pressure vessels. : \8 _8 s6 {1 Y5 s
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. $ h9 d5 G& {3 y5 h" G+ x
4. An onboard water tank is used for cooling of the air.
b4 Z4 _3 K9 E* @4 m% h5 a2 Ga. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant). . n! e! }$ q2 J$ Q; }" M
b. The steam is stored onboard until reaching the station. ( ] }) G5 x0 N' _' K- j
c. Water and steam tanks are changed automatically at each stop.
0 O5 w6 J. ^0 n8 R5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 3 y; x% Q: R( P
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. , x. c! U0 f. i
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. ) Z" f Y$ ~ J7 `4 d N( Y& e$ k& z2 T3 C
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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