amphibious vehicle. the team the project overview the design & prototype the testing the...

AMPHIBIOUS VEHICLE

The Team

The Project Overview

The Design & Prototype

The Testing

The Conclusion

The Acknowledgements

Michael Gondhi

Steve Brink

DeMaagd

Jasper Gondhi

Vandongen

THE TEAM

THE GOAL

Colossians 3:17

“And whatever you do, whether in word or deed, do it all in the name of the Lord Jesus, giving thanks to God the Father

through him.”

Design and develop a working prototype

of human powered amphibious vehicle

(AV) by applying the principles of an

engineering design process from

concept to production.

PROJECT OVERVIEWDESIGN & PROTOTYPETESTING CONCLUSION THANK YOU

PRIMARY GOAL

Speed on Land of 15 mph

Speed on Water of 2 mph

Successful Braking on Land

Successful Transitions between Land and

SECONDARY GOALS

Braking

Turning radius

Stability

Design Goals

Water:

Buoyancy

Stability

Getting on/off

Turning radius

Design Norms

Transparency

Stewardship

Human-powered recreation vehicle

market

Customer: Lake house owners

Flood region service

Customer: Disaster relief agencies and

NGO’s

THE DESIGN & PROTOTYPE

DRIVE TRAIN

PROPULSION

STEERING

FLOTATION

FRAME – Finite Element

Analysis

MODEL W/ FEA

Maximum Deflection: 0.08 in.

Direction of Force

TRAIN FRONT AXLE

PADDLE WHEEL AXLE

0.75 in. 0.475 in.

DRIVE TRAIN – FRONT

Minimize Axle Length: 66 in. - 62 in.

DRIVE TRAIN – PADDLE WHEEL

Initial safety factor used for flotation = 2

Result: Vehicle floats too much and paddle wheels don’t hit water as they are placed with respect to the flotation

Change: Paddle wheel assembly lowered to match necessary height.

Aluminum Tubing

Flotation

Wheels

Paddle Wheel Axle

FLOTATION

FLOTATIONWeightRider 200lbfVehicle 200lbfTotal 400lbfMargin Factor 1.5

Overall Weight 600lbf

FLOTATIONResultsCapacity 873.36lbfPlane Load 124.77lbf/inOverall Weight 600.00lbfDraft 4.81inFreeboard 2.19in

THE MANUFACTURING

PROCESS

Material: Aluminum 6061

High strength to weight ratio

Shape: Circular Tubing

Ease of welding

Diameter: 3 inch

Size donated from Steelcase

Thickness: 1/8 inch

Ease of welding

Strength

Frame Specifications

Created Jig

Fish-mouthed Tubing

Aluminum MIG

welded

Smoothed Welds

Material: 4130 Cold Rolled Steel

According to Calculations

Diameter: 7/8 inch

Available from Machine Shop

Length: 62 inches

According to Frame Width

Drive Train Specifications

Drive Train

Drilled Ends: .322 Diameter

Tapped Ends: 3/8-26 Tap

Manufactured Bearing Adapters

Manufactured Gear Hub Adapters

Purchased Bearings w/ Set Screws

Weld Gear Hub onto Axle

Material: Closed Cell Polystyrene

High Buoyancy

Low Cost

Availability

Coating: Epoxy, Resin (Hardener),

Fiberglass Cloth

High Strength

Ease of Manufacture

Dimensions: 7 in. x 18 in. x 96 in.

According to Buoyancy Calculations

Flotation Specifications

FlotationCNC Hotwired Foam

Square Jig for Router

Routed Square Hole

Connected Bolts into Wood

Fiber-glassed

Material:

Land: Stainless Steel Cable

Durable

Water Resistant

Ease of Manufacture

Water: Polyurethane Sheet

Availability

Ease of Assembly

Effectiveness

Steering Specifications

Steering

Cut Aluminum Block to Raw 3 in. Cube

Programmed Bridgeport Mill

• Milled “U-Shape contour”

• Milled “Grooves” additional grip

• Milled and Tapped Holes

Material:

4130 Steel Axle and Sleeves For High Strength and Welding Purposes

Plastic Paddles and Housings Availability, Effectiveness, and Water

Resistant

Dimensions:

Axle: ¾ in. diameter To Fit Paddle Wheels

Paddle: 19 in. diameter Common Paddle Size

Propulsion Specifications

Propulsion

Machined four sleeves

Welded Gear Hub to Inner Sleeve

Screwed in Paddle Wheels

Spaced Housings

Attached Paddle Wheel Assembly to Frame

Seating:

3 Aluminum “L- slider brackets” on each side

Adjustable seat for all riders

1 inch square tubing

Available in Engineering Shop

Braking:

Used “center-pull” bicycle brakes

Simplicity

Proven Design

Braking and Seating Specifications

Braking and SeatingSeating:

• Weld slider brackets

• Drill holes on both

• Weld seat sectionals

• Slide material

Braking:

• Extend brake cable

• Attach brakes to

handles

TESTINGLAND

TRANSITION

Testing on Land

Braking

Turning

Reverse*

Speed Data

Trial # Speed (mph)

Trial 1 11.76 mphTrial 2 12.40 mphTrial 3 14.04 mph

Average Speed 12.73 mph

Top Speed 14.04 mphPROJECT OVERVIEWDESIGN & PROTOTYPETESTING CONCLUSION THANK YOU

Speed Test Method

Braking Data

Trail # Speed (mph)Stop Distance (ft)

Trial 1 9.48 mph 14 ftTrail 2 12.26 mph 26 ft

Braking Test Method

Turning Test Method

Testing on Water

Buoyancy

Stability

Transition

Buoyancy Test Method

w/ Riderw/out Rider

Buoyancy Data

Draft (Flotation Under Water)

No Rider 1.4in.w/ 1 Rider (150 lbs) 3in.w/ 2 Riders (325 lbs) 4.5in.

Stability Test Method

Stability Data

Angle Measurements

Side-to-Side

1 Rider10 degrees

2 Riders18 degrees

Front-to-Back1 Rider-Back 5 degrees1 Rider-Front 8 degrees

Speed Test Method

Trial # Speed (mph)

Trial 1 2.06 mphTrial 2 2.06 mphTrial 3 2.26 mph

Average Speed 2.13 mph

Top Speed 2.26 mph

Speed Data

Transition: Land to Water

Transition: Water to Land

CONCLUSION

Vehicle moves effectively on land and water

Steering on land and water exceeded expectations

Vehicle is stable on land and water

Secondary Goals

ACKNOWLEDGEMENTS

Professor Nielsen – Team Advisor

Professor Ermer

Phil Jasperse – Metal Shop

Ren Tubergen – Industrial

Consultant

CEAC Review Board

PROJECT OVERVIEWDESIGN & PROTOTYPETESTING CONCLUSIONTHANK YOU

THANK YOU

PROJECT OVERVIEWDESIGN & PROTOTYPETESTING CONCLUSIONTHANK YOU

amphibious vehicle. the team the project overview the design & prototype the testing the...

team slide

amphibious vehicle slide

primary goal slide

axle length

paddle wheel assembly

flotation change

engineering design process

paddle wheels dont

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