Purpose builtEngineeredproducts

built from the ground upBEWARE: hot exhaust

Escaping from reat nozzle

1Θ=168˚

MEEN 4310 Integrated System Design

MIDTERM PRESENTATION

Kevin LaLonde Abigail VincentJoshua Barnes Torian OdenealJulio Parades Kaci Davis

9.30.13

HOVERBOARD SENIOR DESIGN PROJECT

1

Image from University Standard’s Manual

PRESENTATION OVERVIEW1. Background

2. Discovery

3. Concepts

4. Specifications

5. Analysis

6. Schedule

7. Deliverables

8. Management

Team & Project

BACKGROUND

This is quite a Delightful bevel if

I say so myself

This curvuture ofThe set top isA call to nostalgia

SCIENCEFICTION

Flip Phone

Submarine

Ball Bearin

g

BACKGROUND

This is quite a Delightful bevel if

I say so myself

This curvuture ofThe set top isA call to nostalgia

Delorian Image from deloreantimemachine.com

BACK TO THE FUTURE

BACKGROUND

This is quite a Delightful bevel if

I say so myself

This curvuture ofThe set top isA call to nostalgia

Image from Back to the Future movie series

Marty’s

Hoverb

oard

BACKGROUND

This is quite a Delightful bevel if

I say so myself

This curvuture ofThe set top isA call to nostalgia

Image from Back to the Future movie series

1.05

MILLIONGoogle

Hitsfor

Hoverboard

DISCOVERY

1. Projects on YouTube®

2. DIY Hovercraft

3. Manufactured Hovercraft

4. Hovercraft Clubs

5. Experience from Video Games

6. Experience from Movies

7. Other Media

MARTY’S BOARD

ALURA AIRBOARD

FUTURE HORIZON

HOVERCRAFT

OUR DESIGN

CONCEPTS

No Whe

elsImage from gizmodo.com

Image from gizmodo.com

Image from digitalspy.com

Image from uncrate.com

Carvi

ngHan

ds-fr

eeBo

ard Sh

ape

Porta

ble

WEIGHT

5

1

2

1

4

SPECIFICATIONS6-8”Skirt height

2.5

ft1.

5 ft

5ft

15” Diameter

not to scale

spring-loaded throttle

rear foot strap

Triangular thrust port

45˚ Thrust Vector

Turn assist portsFront foot throttle strap

Side view

Top view

Front View

Isometric View

15hp vertical shaft engine

SPECIFICATIONSspring-loaded throttle

Front foot throttle strap

Springs

Connecting Rods

Throttling Flap

Port to Vectored Thrust

THRUST

User’s feet Restraining foot strap

SIDE VIEW

TOP VIEW

SPECIFICATIONS

Top View

Moment

Steering

z

Side ViewX

X Z

Y

YY

SPECIFICATIONSTurning Assist Ports Function From Skirt Compression Due to Carving Technique

Front View

STRETCHE

D PORTS

SEALED PORTS

Carving Direction

ANALYSIS

Primary Loads

MountedEngine and Fan

Approx 100lbs

Board Rider

Approx 200 lbs

Top view

ANALYSIS

Skirt Data Bonding Method

Data from sailrite.comFrom seas.columbia.edu material and parts guide for hovercraft

Plastipane 30 Gauge Weight: 30.00 +/-1.5 oz. per sq. yardColor: ClearEmboss: Polished face and backTensile Strength (5100): 300 +/-25 lbs/in. (warp and fill)Tear Strength (5134): 7 +/- 2 lb. (warp and fill)Hydrostatic Resistance (5512): 150 +/- 20 psiElongation at break: >300%Good optical clarityFlexibleUV resistant0 degree cold crack (ASTM D 1790)

Neoprene Adhesive -- Solvent-based,

waterproof, flexible contact cement.

Bonds tenaciously. Bond strength

increases with age. Ideal for bonding

hovercraft skirt material to itself or

other surfaces, even metal surfaces.

Apply to both surfaces, let dry for 30

mins., then mate the surfaces for a

permanent bond. Clean-up with

acetone. Amber color.

ANALYSIS

Lift Data Thrust Data

Data from using Hover Hawks Lift Calculator based on Jame Perozzos Book “Hovercrafting as a Hobby” Data from hand calculations and WolframAlpha.com analysis

Given:Board Surface Area max =12.5ft^2Length: 5ft Max Width: 2.5ftPayload: 300lbs

Solved:Life Perimeter=15ftTotal Cushion Area=12.5ft^2Cushion Pressure=24 psfAir Velocity= 87.6 ft/sLift Air Volume = 55 CFSMin Lift Engine Power = 4hpMin Fan Diameter = 14” 47/64

Given:Payload = 300 lbsWanted Velocity =20mph

Using Equations:

1) Power = Pressure * Volume Flow2) Pressure = Force * Velocity

Solved:• Need roughly 4 ft^2 output at 4hp

min.• At nominal 15hp, need 1.1 ft^2

ANALYSIS

Cost Analysis

Material/Tools quantity Price Total Price15 hp engine 1 $299 $299 Board material $100 Skirt material 54in*1yd $9.98 $9.98 Nuts & Bolts 1 $17.99 $17.99 Metal Rod 2 $7.67 $15.34 Total $442.31

ANALYSISConstruction and materials:The board will be constructed out of 6 plys of 1/8” Baltic Birch. Using Baltic Birch will allow for a sturdy board, but still some flexibility. Titebond 3 will be used to glue the laminates together. Titebond 3 provides water resistance and a superior bonding strength. The 6 layers will be compressed together with a jig built specifically for shaping this board. Size:The board will be 5 feet long and an estimated 2.5 feet wide at the widest point. The shape is still under determination. The board will be approximately 3/4” thick. Weight:The board will be approximately 25lbs. Process:The first Baltic birch prototype will be made using a jig and purpose built clamps. Using this setup will provide the concave needed in the board. If a composite board is chosen we plan on building a male mold and using a vacuum press. Using a vacuum press will allow for even distribution of pressure of 14.7psi over the entire board. This will prevent air bubbles and provide a uniformly bonded board.

3-point Bending Analysis

SEPTEMBER CALCULATIONS

OCTOBER PARTS & FUNDRAISING

NOVEMBER EVAL & FUNDRAISING

DECEMBER EVAL & FUNDRAISING

JAN-FEB ASSEMBLY & TESTING

SCHEDULE

Looking Ahead:

•Design Engine Mount & Fan Shroud

•Select Engine and Fan

•Use Data to Finalize Speed and Lift Calculation

SCHEDULE

INDIVIDUAL EFFORT

•KACI : SKIRT MATERIAL , CURTIS’S BLUEPRINTS•ABBIE : THROTTLE DESIGN, SKIRT MATERIAL•JULIO : LIFT CALCULATIONS, CENT. FAN IDEA•TORIAN: ENGINE PLACEMENT & TYPES•KEVIN : CREATED PROTOTYPE•JOSHUA : CONCEPT DEVELOPMENT, TEAM MGT.

COLLABORATION (2ME BOARD MFG)DAVID & JOSEPH

SCHEDULE

DELIVARABLES

REAR-

MOUNTED

ENGINE

FRONT-

MOUNTED

ENGINE

CENTRIFU

GAL FAN

VARIANT

Potential Models

Commercial Appeal Easy to rebuild

20mph All foot control

All-terrain Water-Proof Weather-proof

MANAGEMENT

TRELLOGROUP

MEBOX.COM

Measuremen

ts

Lab Base

ANYQUESTIONS?

Purpose builtEngineeredproducts

built from the ground up

BEWARE: hot exhaust

Escaping from reat nozzle

1Θ=168˚