Lehigh Hyperloop Preliminary Design Briefing 2017 (2)
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Transcript of Lehigh Hyperloop Preliminary Design Briefing 2017 (2)
![Page 1: Lehigh Hyperloop Preliminary Design Briefing 2017 (2)](https://reader034.fdocuments.in/reader034/viewer/2022042722/589bb8011a28ab1d748b6d71/html5/thumbnails/1.jpg)
Inter-team Lead: Emma IsaacsEngineering Lead: Tech TanaOutsourcing Lead: Gencer Ates
Web: lehigh.edu/~inhyperE-mail: [email protected]
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Lehigh Hyperloop
Our mission
Design and build a prototype, or “pod,” that will travel up to 180 m/s (400 mph), revolutionizing the transportation industry.
We are a dedicated group of undergraduate students who firmly believe that Hyperloop will play a grand role in the ground transportation around the globe.
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Advisors: Amir Tejani Prof. Douglas FreyMentors: Grant Moore Seamus Cullinane
Inter-team Lead: Emma IsaacsEngineering Lead: Tech TanasarnsopapornOutsourcing Lead: Gencer Ates
ExecutivesAaron SandovalAlex RadetskyChristian MurphyDaniel BeadleJesse GallowayJohn OttKaity HwangMichael TrongonePeter Nguyen
Roster
Peter RizkoJames WaringErin Huntzinger Nithin RajaramSkipper EricksonDrew SiedelJacob BaerNayantara Chaisson
Brian McCabeStefan Gorski
Active MembersYunhai (Eddy) TanCorey BancroftJoseph AraujoBen DurkeeKanuruj ChanthongdeeTsering DingtsaRobert WeaverKarim Rajmohamed
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Hyper Hawk2
(Hull Picture)Exterior Dimension: 15.2‘ L x 3.7’ W x 2.3’ H
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The estimated pod mass of 487 kg composes of:• Chassis and fiberglass hull 73
kg • Magnetic levitation
90 kg• At-station wheelset
18 kg• Air-caster lateral control
25 kg• On-board cold air propulsion 54
kg• Eddy current brake
32 kg• Friction brake
23 kg• Energy and Backups
127 kg• Life-support compartment 36
kg• Controls and circuits 9
kg
Overall Pod
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Overall Flight
Expected average pusher acceleration of 2gProjected top speed of 200 m/s or 447 mph
Pusher
engaged
On-board Propulsion
Friction Brake
Eddy Current Brake
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Navigation
On-board Propulsion initiated
Flight Started
Friction Brake engaged
Propulsion disengagedMagnetic Brake engaged
Levitation disengaged
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Hull
2D:
3D:Velocity of air around the pod
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Hull
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Levitation
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Levitation Motor
• Peak Power: 30kW per motor • Note: Motors won’t be running at full power
• Units: 4• Motor Weight: 11kg• Tesla Battery Units Needed for 15 Minute Hover Test: 1• System Weight: 80kg (not including batteries)
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WheelsetThe brackets on the wheel assembly will attach directly to the chassis
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PropulsionCold Air Propulsion
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Stability
• Air bearings placed on both sides of I beam, front and back, for balance
• Air bearings could self-regulate. When over the self-regulation threshold, the flow control valves assist in pressure change to maintain balance
• Four air bearings using 21psi and 18.4cfm from a pre-loaded tank
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Overall Lateral Control Design
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Braking (Eddy Current and Emergency)
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Braking (Friction)Wilwood PolyMatrix-H brake pads, consistent COF with respect to temperature changes
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Life-SupportPurpose: To sustain a closed system within the pressurized pod that maintains a stable and comfortable breathing environment with ample supply for extended journeys.
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Life-Support
1.Air tank2.Carbon dioxide scrubber3.Dehumidifier4.Pressure release valve
Life Support Cabin Sensors
1.Temperature2.Humidity3.Pressure4.Carbon monoxide5.Accelerometer
Life Support Chamber Components
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• 4 Tesla Model-S batteries, each with 24 V, 250 Ah• Back up: 2 Tesla Rav-4 batteries, each with 29 V, 100 Ah• 14-L air tank with 3500 psi MAWP, 2000 psi MEOP• 12-L Liquid Nitrogen Tank with emergency leak valves
Energy
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Safety Features Summary
• Hardware and software redundancy ensure braking to not engage during the acceleration phase
• 25% Power backup can bring the pod to emergency stop• E-Glass sandwich composite hull protect internal components in
case of rapid pressurization
Mechanical Switch
Attached
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• Eddy current brake can function as passive gliding and lateral control system
• Reducing regulator system commands prevent single point of failures issue
• Fixed wheels allow the pod to be moved if power loss• Emergency stop command connects mission control with the on-
board server
Safety Features Summary
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Hazardous MaterialsLiquid nitrogen and inert heating liquid are kept in a separate temperature controlled housing and high-pressure industrial gas tanks which can endure large pressure and external impacts. The operation also contains redundancy system that completely separate the liquid from mixing chamber that feed into the nozzle. Upon vaporized, liquid nitrogen are non-reactive to any chemical or electrical sparks.
Tesla™ Lithium Ion Battery has various safety features such as fuses on each cell to prevent hazards and specific packing that prevents catastrophic failures.
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Available Facility
Mountaintop Campus
Wilbur Powerhouse