TA的每日心情 | 擦汗
2019-6-16 23:34 |
|---|
签到天数: 1277 天 [LV.10]大乘
|
/ A2 Y- f: I f, u' e
musk 的 electric compressor fan 在其计划书里是这么描述 （其中的一种）：
, d4 f3 Q% K- X' i* O
3 V6 t0 X2 p4 N+ k5 IHyperloop Passenger Capsule
( K8 h4 {4 O- X( b) b1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. % W2 ^0 f1 _( \) X8 U& A* E
2. Up to 60% of this air is bypassed:
9 i4 w$ j# X7 q7 j4 A8 y* ~a. The air travels via a narrow tube near bottom of the capsule to the tail.
9 |! z, B. g' f& t( h' {- ub. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag. - K9 F/ f% f8 ]" V+ u
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. ' }4 ~! S0 G; L' g E7 ~9 n' |' p
a. This air is stored in onboard composite overwrap pressure vessels. & w/ D$ m2 d$ Q6 \/ q
b. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls.
5 {1 r D4 w2 B- c- ?% {1 k4. An onboard water tank is used for cooling of the air.
/ L9 d4 }9 ?4 T f9 |1 u2 F& da. Water is pumped at 0.30 lb/s (0.14 kg/s) through two intercoolers (639 lb or 290 kg total mass of coolant).
1 y) x0 r# a \7 ~# gb. The steam is stored onboard until reaching the station.
* Q) `" m0 C6 o9 Xc. Water and steam tanks are changed automatically at each stop.
# ^! Q, t/ M4 W8 K1 E, O7 y. e5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
$ w) y8 _. y8 k, Ka. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics. 2 i% y9 z9 O! U' O2 A- f/ h
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.
7 w, r! p7 h5 _& yc. Onboard batteries are changed at each stop and charged at the stations. |
|
雷达卡
发表于 2017-10-18 12:30:25
显身卡
4 h! L7 c7 b' {& n7 i; G; }& d
楼主