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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* k* T* H$ i5 i( I- q' lHyperloop Passenger Capsule , k, v1 S5 I: w: l. t
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor.
U' ^3 c; {+ J6 ^7 c3 y) t2. Up to 60% of this air is bypassed: , [4 J% W! p, N/ y/ h- m
a. The air travels via a narrow tube near bottom of the capsule to the tail. 8 T$ P% ]3 S$ c& T: C6 B
b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
, ^$ ?: o3 Y \' t$ F7 H5 n8 d3. 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.
% h; r" k @" z. l1 _ Ja. This air is stored in onboard composite overwrap pressure vessels.
- U" ^+ A) h( h. t" r- Wb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. : J9 I: P+ V `
4. An onboard water tank is used for cooling of the air. ( a! f7 I; w: F1 m& N
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).
% i* L0 y) \1 T9 Zb. The steam is stored onboard until reaching the station.
6 l+ S' E% u: i+ Y. x' rc. Water and steam tanks are changed automatically at each stop. 2 C2 b) ^8 E* K6 n9 l9 ^
5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
$ g7 a, C* y7 {a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. ; B& P W" h2 o: ^1 q
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.
; n x+ w( B3 @$ J! i7 z, @* Gc. 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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