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TEAM HYPER LYNX Connor Catterall, Ben Cooper, Nicole Garcia, George Kemp, Chandler Lacy, John Spinelli, Mark Urban, and Susan Waruinge October 9 th 2015 Pod Components Discussion Summary/Conclusions Mass Flow Recommendations

SLIDE 1

TEAM HYPERLYNX

Connor Catterall, Ben Cooper, Nicole Garcia, George Kemp, Chandler Lacy, John Spinelli, Mark Urban, and Susan Waruinge

October 9th 2015

SLIDE 2

SLIDE 3

 Pod Components

 Mass Flow  Compressor  Controls  Air Bearings  Linear Induction Motor  Brakes  Frame

 Discussion  Summary/Conclusions  Recommendations

SLIDE 4

What is a Hyperloop?

 Proposed by Elon Musk, the founder of Tesla and SpaceX

 New form of transportation that will consist of a pod traveling in a

low pressured tube on a frictionless surface at speeds near Mach 1.

Purpose The mission of team Hyperlynx is to design and manufacture a Hyperloop pod demonstrating the safety, stability and feasibility of the Hyperloop system.

SLIDE 5



Building a half size pod

 14 feet long  4 feet wide

 The pod will be compete in a

proof of concept competition at SpaceX headquarters in June 2016

 Over 200 teams  1 mile long straight test track  5 feet diameter tube

SLIDE 6

𝑁 = 𝑊 𝐷 𝑊 = Relative Speed C = Speed of Sound

Mach Regimes

Hypersonic Hyper Velocity M Classification Low Subsonic High Subsonic Transonic Sonic Supersonic 𝑁 𝑁 8 𝑁 𝑁 = 𝑁 𝑁 𝑁 25

𝑁 = unity

SLIDE 7

Mass Flow in the Hyperloop

Five Control Volumes

1. Overpass
2. Inlet
3. Diffuser
4. Underpass
5. Outlet

𝑆𝑓 = 𝜍𝑊𝐸𝐼 𝜈

; 𝑆𝑓 laminar 𝑆𝑓 > 4 turbulent

SLIDE 8

Axial compressor
Primary function is to decrease

mass flow rate around the pod to avoid choked flow

Also provides compressed air

to the air bearings

Advantages
Efficiencies up to 90%
Capable of high mass flow

rates

Lightweight

SLIDE 9

0.05 0.1 0.15 0.2 0.25 0.3 0.35 50 100 150 200 250 300 350 400

Mass flow rate (kg/s)

Velocity (m/s)

Mass Flow Rate into Compressor

Mass flow rate into compressor to avoid choked flow Actual flow rate into compressor

SLIDE 10

5 10 15 20 25 30 35 40 45 50 50 100 150 200 250 300 350 400 Power (kW) Velocity (m/s)

Compressor Shaft Power Requirement

SLIDE 11

Intercooler

draws heat from air exiting the compressor

Independent

pressure vessels provide flow to bearing and cabin

SLIDE 12

Off-board CPU will

monitor internal functions

On-board CPU will

perform autonomously

Advantages of Arduino
Low power

consumption

Number of I/O ports
Ease of coding

SLIDE 13

 Provide levitation and almost frictionless

travel

 16 air bearings, located on either side of

the pod

 Total specs

 Load capacity - 12,800 lb  Air consumption - 160 scfh  Pressure - 60 psi

 Limitations

 How to overcome shear stress  Requires perfectly machined tube

Images courtesy of nelsonair.com

SLIDE 14

 Suggested to SpaceX by MIT  Rail fixture attached to the top

f tube

 Will solve additional issues

related to stability and braking

 Limitations

 Force of rolled steel bar will be

very high, especially around turns.

 If SpaceX uses the rail idea,

calculations must be initiated to determine strength of rail and max speeds.

Image courtesy of MIT Team

SLIDE 15

 Propulsion System

 Used to accelerate and decelerate the pod  Primary (stationary) component: Stator (provided by SpaceX)

 Constructed into the tube

 Secondary (moving) component: rotor

 Constructed to the Pod

 Main braking system

 Will recapture energy from moving pod while decelerating pod

SLIDE 16

 Deceleration values  Human comfort: 0.15g

 Untrained human

 20 g for less than 10 s  10 g for 1 min  6 g for 10 min  Main braking system  Linear induction motor  Emergency braking system  Landing gears and disc barkes  Turn off compressor  Barricade

5 10 15 20 25 30 5000 10000 15000 20000 25000 0.15 1 2 3 4 5 6 10 20

Distance to Stop (mi) Force (lbf) Deceleration (g)

Braking Force

Force (lb) Distance to Stop (mi) Note: Calculation based on 1000 lb mass

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 Material



Aluminum 2024

 Reinforced with ribs and stringers

 Advantages:

 Increase buckling strength  Stability  Structural Integrity

 Frame shelled with aluminum,

riveted to body.

SLIDE 18

Front View Side View

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 Our design is optimized to prevent choke flow by pulling air

through the pod instead of around

 Pressurized air onboard system for air bearings that will

provide a frictionless surface

 The frame is designed to minimize weight and drag while

maximizing strength

 The LIM will provide sufficient propulsion to keep the pod

moving at above 700mph.

SLIDE 20



Validating computer modeling with experimental data

 Wind tunnel test  Air Bearing Test

 Create a working model 1/10th

scale.

 Work with electrical engineers

for the control system

 Test LIM and create process

sheets for rotor.

SLIDE 21

 Doug Gallagher  Ron Rorrer  Joseph Cullen  Denver Channel 7  CBS  All our Kickstarter Backers  College of Architecture

SLIDE 22

http://www.wired.co.uk/news/archive/2015-05/28/elon-

musk-hyperloop-might-be-free-breaking-ground-in-2016

https://en.wikipedia.org/wiki/G-force

 NMAN news direct  Matlab Simulink Hyperloop App  David Dearing (compressor design)  Mario Paredes (seats design)

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