PROJE CT-BASED LEARNING: ABS PLASTIC DERBY

Transcription

1 PROJE CT-BASED LEARNING: ABS PLASTIC DERBY Descriptin D yu remember the pine wd derby cars yu designed and built when yu were a child? D yu remember hw difficult it was t get the shape yu wanted in the wd? Did yu ever wish there was an easier way t build yur car? Nw there is! Yu will use SlidWrks t design a car that will meet the given cnstraints. Yu will see yur car cme t life in the 3D printer. Yu will get t make mdificatins t yur car after it is printed paint, drill hles, add weights, etc. Finally, we will race yur cars t see wh the CAD derby champin is! Deliverables Pre-Lessn Wrk: Anticipatry Guide Preliminary Wrk: Sketches Pst-Design Wrk: Csting Pst-Design Wrk: CAD Prtfli Page Pst-Design Wrk: Pst-Design Wrk: Yur car (Race!) Requirements Ideal submissins will meet the fllwing requirements: 1. Yu must cmplete all required wrk fr the prject by the due dates in rder t participate in the races. 2. Yur car must adhere t all cnstraints as detailed in the handuts. 3. Yur wrk must be neat and rganized with apprvals frm yur instructr as needed 4. Meet the due dates If yu d nt submit by the due date, yur car will nt be made, yu will nt participate in the races and yu will receive a failing grade fr the prject. Page 1 f 7

2 Anticipatin Guide: ABS Derby Directins: Using nly a writing utensil and this handut, please answer the fllwing questins prir t participating in the ABS Derby Prject Lessn. Cmplete the clumn n the left nly. After the lessn, yu will be asked t cmplete the clumn n the right. Befre Lessn Agree / Disagree Statement After Lessn True / False 1. Ptential energy is energy stred in an bject. 2. Kinetic energy is the energy f mass. 3. Speed can be gained thrugh added frictin. 4. Center f mass is always the center f an bject. 5. Aerdynamics in design will reduce frictin. 6. Gravity is a frce that is cnstant. 7. Mmentum and acceleratin are exactly the same Acceleratin is a vehicle's capacity t gain speed within a shrt amunt f time. Mass is the measure f an bject's resistance t acceleratin when n frce is applied. Velcity is the speed f an bject traveling in a given directin. 11. Frictin causes heat and will slw an bject dwn. 12. Aerdynamics invlves an bject pushing air mlecules ut f the way. Blck: Page 2 f 7

3 Tp View Side View CPC CAD: PROJECT-BASED LEARNING ABS Plastic Derby Preliminary Wrk: Sketches Directins: Using the space belw, sketch a tp and side view f yur vehicle t scale NOTE: Each bx = 4mm Blck: Teacher Signature: Page 3 f 7

4 Prject Cnstraints Nte: Yur ABS Plastic Derby car MUST adhere t the fllwing cnstraints in rder t be race eligible. Material: ABS Plastic (this is what the 3D printer uses) Units: Must be designed in metric (mm) Dimensins: Width Overall width shall nt exceed 70mm Height Overall height shall nt exceed 55mm Length Overall length shall nt exceed 160mm Inside Wheel Base Clearance: 45mm Grund Clearance: 10mm Hles fr axle: 2.3mm Wheels: T be prvided by yur instructr Axles: T be prvided by yur instructr Lubricants: Graphite nly (prvided by instructr) Fine Details: ALL vehicles must be painted and must have a number n each side and n the tp Weight: All vehicles will weigh the same at race time: 5 unces ttal Weights will be added t all vehicles as needed Be sure t design a place fr weights n the bttm r tp f yur vehicle Suggested weight cmpartment size: 27mm wide x 50mm lng x 20mm deep Page 4 f 7

5 Pst-Design Wrk: Csting Directins: Wrk individually with Mr. Mandl t determine the apprximate cst f yur vehicle Budget: Unlimited Cmpnent Axles (4) Wheels (4) Chassis (ABS Plus Plastic) Chassis (Supprt Material) Lubricant (Graphite) Paint Apprximate Cst Apprximate Vehicle Cst Blck: Teacher Signature: Page 5 f 7

6 Pst-Design Wrk: Directins: Using yur vehicle, determine the answers t the Fllwing Math equatins TH MATH SKILLS Additin Subtractin Multiplicatin Divisin Averages Decimals Percentages 1. Run yur car dwn the track and recrd each time in the Time (s) clumn in the table belw. Trial Time (s) Average speed (in/s) Cmplete the third clumn f the chart, and shw yur wrk belw. Trial 1 Wrk: Trial 2 Wrk: Trial 3 Wrk: 3. What was the verall average speed f yur car? 4. If yu culd increase yur car s verall average speed by 10%, what wuld yur car s new verall average speed be? 5. If yur car travels at an average speed f 30 in/s, what percentage increase r decrease des that represent frm yur answer t questin #3? _ Blck: Teacher Signature: Page 6 f 7

7 Prject Rubric Pints Anticipatry Guide Anticipatry guide is 100% cmplete Anticipatry guide is nt 100% cmplete r is missing Sketches Cmpleted Sketch sheet is turned in with Cmpleted Sketch sheet is turned in with signature but sketches are nt drawn t scale Sketches are nt drawing t scale and/r ne sketch is missing and/r signature is missing Sketch sheet was cmpleted, but with minimal effrt. Sketch frm is missing r was nt attempted. 3D Design & Design Cnstraints 100% cmplete and has been apprved by the cmplete, but des nt adhere t ne r tw cnstraints cmplete, but des nt adhere t three r fur cnstraints cmplete, but des nt adhere mre than fur cnstraints missing r was nt attempted Csting Csting sheet is cmplete and signed by Csting sheet is cmpleted but nt signed by Csting sheet is incmplete and nt signed by Csting Sheet is missing r was nt attempted Cmpleted sheet is turned in with Cmpleted sheet is turned in withut Partially cmpleted sheet is turned in withut sheet is missing r was nt attempted Race Participatin Student Participated in the races Student did nt participate in the races Nn-Negtiable Assessment: 50 Pints Due date and all requirements f the prject have been met. Assmt. Ttal 100 Pints H.W.Ttal Teacher Cmments: Blck: Teacher Signature: Page 7 f 7