team 32 members: caleb mcgee, m.e. dan rogers, m.e. dylan sartin , m.e. nick sager, m.e
DESCRIPTION
Faculty Technical Advisor: Dr. Chu. Team 32 Members: Caleb McGee, M.E. Dan Rogers, M.E. Dylan Sartin , M.E. Nick Sager, M.E. Ryan Schmidt (PM), M.E. Outline:. Overview- Ryan Schmidt Block Diagram Subsystems: Frame- Dan Rogers Drivetrain Suspension- Nick Sager Steering - PowerPoint PPT PresentationTRANSCRIPT
Team 32 Members:Caleb McGee, M.E.Dan Rogers, M.E.Dylan Sartin, M.E.Nick Sager, M.E.Ryan Schmidt (PM), M.E.
Faculty Technical Advisor:Dr. Chu
OUTLINE:• Overview- Ryan Schmidt• Block Diagram• Subsystems:
• Frame- Dan Rogers• Drivetrain• Suspension- Nick Sager• Steering • Seating and Safety- Dylan Sartin
• Timeline• Cost- Caleb McGee• Summary
• Background• The 2013 Moonbuggy is designed to compete in the 20th annual NASA Great Moonbuggy
Race
• Human powered vehicle supporting two drivers
• Must complete a 0.7 mile obstacle-based course simulating lunar terrain features
• Deliverables• Fully Functional moonbuggy that meets NASA competition, design, and safety criteria
• Design report detailing the 2013 design, analysis, and research.
• Responsibilities• Project Management: Ryan Schmidt• Frame: Caleb McGee• Suspension: Ryan Schmidt• Steering: Nick Sager• Drive Train: Dan Rogers• Ergonomics: Dylan Sartin
• Resources• Cost of parts: $6,790.00
EXECUTIVE SUMMARY
BLOCK DIAGRAM
FRAME• Frame Rails
• 3 rail frame for greater rigidity over single rail designs• 4130 chromoly steel• ¾” O.D. 0.049” wall thickness
• Folding• Single pin hinge• Dual latches
• Layback• 10° of layback on the front frame• Directs aft forces into suspension travel
DRIVETRAIN• 4 Wheel Drive
• Front driver powers the front wheels• Rear driver powers the rear wheels
• Both drivers have Hammer-Schmidt transmissions• The Hammer-Schmidts have a system of planetary gears
contained within the sealed housing which yields either a 1:1 or a 1.6:1 overdrive gear ratio.
• 200 (ft•lb)• $730 each
DRIVETRAINTricycle style differential
• Drive gear bound together by 2 BMX freewheels ¾” spline shaft1.25” U-Joints
SUSPENSION• Independent double wishbone suspension
• Non parallel, unequal length• Pushrod activated shock absorbers
• 7 inches of travel• Optimized geometry for steering and handling stability
STEERINGUnder Seat Steering
• Space Saving• The moonbuggy must fit
into a 4’ cube or suffer a 2 minute penalty
• Adaptable• Can have a center steering
system incorporated into it• Easy to Use
Circled is the under seat steering system on a recumbent bicycle
SEATING AND SAFETY• Ergonomic Seats
• Recumbent style • Body Restraints• Roll Bars
• Extend over the passenger’s heads
TIMELINE
COST PROPOSALFrame: $500.00Drivetrain: $4,315.00Suspension: $1,250.00Steering: $375.00 Seating: $350.00
Total: $6,790.00
SUMMARY• Goal
• Build a human powered vehicle to compete at NASA’s Great Moonbuggy Race, April 25th 2013
• Vehicle Features• Four wheel drive• High travel suspension• New safety features• Light weight