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):$ I+ x! B# G* G ?
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Hyperloop Passenger Capsule # m: I: a- I; o# B9 m
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. s/ g# M- Q, r
2. Up to 60% of this air is bypassed:
' F) B! f' F& Ta. The air travels via a narrow tube near bottom of the capsule to the tail.
* Z& z* A- C! ~9 I& a5 _' b3 l* Xb. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. 9 d" q5 Q) R. @% L0 T' K: S
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 O6 C2 v2 w! h( a3 X8 [1 s9 y. I0 K" Za. This air is stored in onboard composite overwrap pressure vessels.
& ~5 Q9 ~# w+ a$ Z' N J8 wb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
: v o1 A: m0 }! F4. An onboard water tank is used for cooling of the air.
, u6 o f( U% h* F" S' B; ta. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
0 X3 |- U' k$ }* Cb. The steam is stored onboard until reaching the station. % C$ E: w7 l6 q( R* R& Q0 i' k
c. Water and steam tanks are changed automatically at each stop.
) k( B: N9 k* i# Z, c8 Z3 F5. The compressor is powered by a 436 hp (325 kW) onboard electric motor: 7 m7 V: }: h* `9 L$ d' j
a. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. & Q( J+ J! d' 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.
+ \2 z6 w# {" l, R7 C/ gc. Onboard batteries are changed at each stop and charged at the stations. |
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