Planetary ExplorerPlanetary Explorer

Team: 98.04Team: 98.04

Customer: Dr. Stephanie WrightCustomer: Dr. Stephanie Wright Advisor: Dr. John Meakin Advisor: Dr. John Meakin

Team members: Chris AndrewsTeam members: Chris Andrews

Patrick FabianPatrick Fabian

Brian GivensBrian Givens

Tim StarttTim Startt

Mission: To design, manufacture, and test a full sized planetary explorer that will be Mission: To design, manufacture, and test a full sized planetary explorer that will be driven by two students, grades 7-10, that can be used in various activities to excite driven by two students, grades 7-10, that can be used in various activities to excite the students about the space program.the students about the space program.

CustomersCustomers

Dr. WrightDr. Wright DASEFDASEF Cheryl BiebleCheryl Bieble Teacher grades K-6Teacher grades K-6 Beth Ann AlberBeth Ann Alber Vice principle/teacher grades Vice principle/teacher grades

5-85-8 Paul GrayPaul Gray Teacher grades 7-8Teacher grades 7-8 Ursula Andrews Ursula Andrews Teacher grade 10-11Teacher grade 10-11 Michael BowersMichael Bowers Student grade 11Student grade 11 Daniel BowersDaniel Bowers Student grade 8Student grade 8 Erika Andrews Erika Andrews Student grade 12Student grade 12

Prioritized WantsPrioritized Wants

Want Associated Customer

Controlled by children All

Allow participation of users All

Require teamwork Dr. Wright / Teachers

Transportable Dr. Wright

Traverse course Dr. Wright / Children

Low maintenance Dr. Wright

Fit budget Dr. Wright

Aesthetic to children Dr. Wright / Childrenwithing

System BenchmarkingSystem Benchmarking

Lunar Roving VehicleLunar Roving Vehicle LOTRANLOTRAN Four-wheeled bicyclesFour-wheeled bicycles Mars PathfinderMars Pathfinder SandrailSandrail Lunar Rover InitiativeLunar Rover Initiative Lunar Roving Design ProjectLunar Roving Design Project

Functional Functional BenchmarkingBenchmarking

Fundamentals of Vehicle DynamicsFundamentals of Vehicle Dynamics Theory of Ground VehiclesTheory of Ground Vehicles Handbook of Vehicle Design AnalysisHandbook of Vehicle Design Analysis Electric and Hybrid VehiclesElectric and Hybrid Vehicles Radio Shack, Inc.Radio Shack, Inc. McMaster-Carr, Inc.McMaster-Carr, Inc. Resources on video and digital camerasResources on video and digital cameras AnthroKidsAnthroKids

Quality MetricsQuality MetricsQuality Metrics Target Range Actual

Dimensions < 12'4"x69"x79" 91"x43"x48"

maintenance time < 1 hour per 5hours run time

weight of vehicle <=500 lbs 500 lbs

turning radius <10ft 8ft

# of seats 3 3

# of students requiredto operate

2 2

color of vehicle black/white/silver/blue

black/silver/blue

cost <$1,500 $1,450

Concept SelectionConcept Selection

Completely design vehicle:Completely design vehicle:• UniqueUnique• Meets all metrics with no modificationsMeets all metrics with no modifications• Extremely expensive and difficultExtremely expensive and difficult

Use existing vehicleUse existing vehicle• Must modify to meet metricsMust modify to meet metrics• Requires less work, less moneyRequires less work, less money

BudgetBudget

Purchased Parts Source CostUsed Golf Cart Mid-Atlantic Equipment $900.00Batter Charger Mid-Atlantic Equipment $200.00

Golf Cart Operations andRepair Manual

Mid-Atlantic Equipment $35.00

3003-H14 Sheet Aluminum0.080"x36"x120"

Reynolds Aluminum $158.00

Plywood 0.5"x24"x48" Home Depot $6.27Brake Cable Bike Line $11.00

Foam padding Jo-Ann Fabrics $7.14Black vinyl Jo-Ann Fabrics $27.96Seat Belts Pep Boys $47.97

Nuts, bolts, hinges, brackets,vinyl tube

True ValueHardware/Home Depot

$7.49

Paint and Master Primer F&H Paint $27.11Total= $1,427.94

BudgetBudget

Total shop time: 30 hrsTotal shop time: 30 hrs Total assembly time: 10 hrsTotal assembly time: 10 hrs

PrototypePrototype

PrototypePrototype

RecommendationsRecommendations

Finish control systemFinish control system Add front coverAdd front cover Add front seat beltsAdd front seat belts Measure battery run timeMeasure battery run time Add instrumentsAdd instruments Add decals, letteringAdd decals, lettering

TestingTesting

Turning Radius - 8 ftTurning Radius - 8 ft Student’s Response - PositiveStudent’s Response - Positive Speed Governor Speed Governor Battery Run Time / Charge Time Battery Run Time / Charge Time Accelerator / Brake CablesAccelerator / Brake Cables ErgonomicsErgonomics