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

Steve

DeMaagd

Jasper Gondhi

Tyler

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

Water


SECONDARY GOALS

Land:

Speed

Braking

Turning radius

Stability

Design Goals

Water:

Buoyancy

Stability

Getting on/off

Turning radius


Design Norms

Trust

Transparency

Stewardship


Human-powered recreation vehicle

market

Customer: Lake house owners

Flood region service

Customer: Disaster relief agencies and

NGO’s

Scope


THE DESIGN & PROTOTYPE


FRAME

DRIVE TRAIN

PROPULSION

STEERING

FLOTATION


FRAME


FRAME – Finite Element

Analysis

MODEL W/ FEA

Maximum Deflection: 0.08 in.

Direction of Force


DRIVE

TRAIN FRONT AXLE

PADDLE WHEEL AXLE


0.75 in. 0.475 in.

DRIVE TRAIN – FRONT

AXLE

Minimize Axle Length: 66 in. - 62 in.


DRIVE TRAIN – PADDLE WHEEL

AXLE

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

Aluminum Tubing

Flotation

Flotation

Wheels

Wheels

Paddle Wheel Axle

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


Frame

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

sides

• Weld seat sectionals

• Slide material

Braking:

• Extend brake cable

• Attach brakes to

handles


TESTINGLAND

WATER

TRANSITION


Testing on Land

Speed

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

Speed

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...

Documents

team slide

amphibious vehicle slide

primary goal slide

axle length

paddle wheel assembly

flotation change

engineering design process

paddle wheels dont