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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. R" G8 s) x4 J5 jmusk 的 electric compressor fan 在其计划书里是这么描述 (其中的一种):
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. X! i, @! O; U: l% |. \Hyperloop Passenger Capsule G4 m" T: F) r& m3 y. k
1. Tube air is compressed with a compression ratio of 20:1 via an axial compressor. T9 ]+ E5 s- t' k; H9 E$ ~( m, h% d
2. Up to 60% of this air is bypassed:
, r( w7 g* E# A+ Y7 ?a. The air travels via a narrow tube near bottom of the capsule to the tail.
, I. V3 u3 a! `8 f) t) \& ^b. A nozzle at the tail expands the flow generating thrust to mitigate some of the small amounts of aerodynamic and bearing drag.
) Y! J$ m H4 i: _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.
$ E* s* l4 v6 ka. This air is stored in onboard composite overwrap pressure vessels.
$ x$ Z, r! s m. \1 Hb. The stored air is eventually consumed by the air bearings to maintain distance between the capsule and tube walls. 8 e! \/ i: H6 a, J% M3 z
4. An onboard water tank is used for cooling of the air. U4 \8 ]3 _3 I: Z0 g0 S) t* x5 ? a
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).
' C* ~7 i9 w, b! t. Mb. The steam is stored onboard until reaching the station.
! A* l" G+ m+ y+ H+ G; l+ Wc. Water and steam tanks are changed automatically at each stop.
: H2 D) M$ x: y# F0 @, e5. The compressor is powered by a 436 hp (325 kW) onboard electric motor:
8 q# P/ r$ J2 D za. The motor has an estimated mass of 372 lb (169 kg), which includes power electronics.
3 ?1 P% u" q1 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.
# x, ~% [1 | [! v6 z- D7 l9 ?c. Onboard batteries are changed at each stop and charged at the stations. |
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