Nasir Almasri Audrey Kelly Kari Schulz TARCkan Nasir Almasri Audrey Kelly Kari Schulz

Overview Problem Statement Timeline Background Scope Brainstorming & Research Criteria Constraints Explore Possibilities & Select Approach Design Proposal Prototype Test & Refine

Problem Statement We need to create a rocket using TARC-approved materials that is capable of carrying a 60-gram egg to an altitude of 750 feet and safely return it to the ground using a 15-inch parachute.

Roles Team Leader: Nasir Almasri Scribe: Kari Schulz Took charge, Enthusiastic to take on challenge Direct team meetings, Report to Mr. Pritchard Scribe: Kari Schulz Good documenting skills, Highly organized Engineering notebook, documents, notes Timekeeper: Audrey Kelly Organizes time well, Appropriates work evenly Timeline, Planned-Actual, Awareness of due dates

Team Constitution Communicate issues clearly and effectively. Problems between members handled professionally and maturely All work will be submitted on time One hundred percent effort to ensure it happens Two weekly status meetings Get everyone is on the same page Create Planned-Actuals

Timeline Problem Statement (Start date) Detailed Timeline Research Nov 19-Nov 29 Detailed Timeline Nov 29-Dec 3 Research Dec 6-Dec 17 Criteria & Constraints Dec 15-Dec 16 Explore Possibilities Dec 20-Jan 4 Select an Approach Jan 4-Jan 7 Design Proposal Jan 7-Jan 28 Prototype Jan 28-Mar 20 Presentation Materials Nov 19-May 5

Background Competition Future of Rocketry 2002 Largest rocket competition Washington D.C. Future of Rocketry Students getting into aerospace 70% now interested in STEM career 81% connect math, science & technology Whoever has this slide must review the safety rules to give as examples

Background (cont.) General Rocketry Safety rules “Space race” NASA used models to save money Safety rules Non-metal materials Certified motors only Cannot weigh more than 1,500 g Cannot launch rocket at targets Must use recovery system such Future rocket scientists STEM=science technology engineering math

Scope Cannot purchase rocket building kit Perfectflite ALT15K/WD altimeter Approved rocket motor Go-Box (from Mr. Pritchard) Grand total money spent: $300 Use Mr. Pritchard & Mrs. Brandner for assistance Qualification must be by April 4th

Deliverables TARC: Mr. Pritchard Mrs. Brandner test results Completed rocket CAD drawings Final report PowerPoint presentation Mrs. Brandner Engineering notebook

Brainstorm Questions Fuel Best materials Ideal size for competition Types of wings and fins Competition-approved motors How NASA propels rockets How we can use to our benefit Payload

Research TARC handbook Manufactures RockSim

TARC Criteria Altitude 750 feet Max propellant 62.5 g 15-in parachute 1000 g Rocket 57-63 g Egg (45 mm) 40-45 sec. Flight Alt15KA Altimeter Carry raw egg (max 45mm in diameter & 60g) With no damage Results must be received before April 4th Also this is criteria on design matrix

Constraints All materials (PowerPoint, finished project, and report) May 5, 2011 Must use prior knowledge of math and science All progress recorded in engineering notebook BUDGET

Explore Possibilities Design #1 Polystyrene PS nosecone Paper body tube Rip-stop nylon parachute Two G-10 fiberglass fins Shock cord Alt15KA altimeter One bulkhead & centering ring Pros Cons Over 750 feet Egg may not fit 40-45 seconds Bulkhead too small Materials obtained easily Paper body tube weak Reliable motor G-10 Fiberglass fins expensive

Explore Possibilities Design #2 C2-4 engine Alt15KA altimeter Thick plastic (for wings) PC piping Nylon parachute Pros Cons Materials easy to obtain PVC Body tube too big Enough space for egg Too cheap & break easily Reliable engine (C2-4) May exceed weight limit More aerodynamic Rocket almost 3 feet

Explore Possibilities Design #3 B6-4 engine Nylon parachute Plastic fins Shock cord Alt15KA altimeter Thick cardboard (for body) Pros Cons Extra space & shock cord Motor too weak Recovery wadding Egg too big for nosecone Cheap body & nose cone No space for padding Large body tube Irregular shaped fins

Select an Approach #2 failed altitude, time & egg criteria #3 failed altitude & time criteria #1 passed all mandatory criteria Criteria M/O #1 #2 #3 Altitude 750 feet M 1 Max propellant 62.5 g 15-in parachute 1000 g Rocket 57-63 g Egg (45 mm) 40-45 sec. Flight Alt15KA Altimeter No egg damage Under $150 O Reliability Ease of Build Total Score   11 X

Final Design RockSim Design

Design Proposal: CAD

RockSim Testing Original design 749.94 feet 41.595 second flight Two fins D12-3 engine 749.94 feet 41.595 second flight

Calculations y1 = (-m/2k)*ln ((T-mg-kv2)/ (T-mg))  (-.38125/ (2*.00154))*ln ((65.8-3.73625-.00154(91.762))/ (65.8-3.73625)) = -123.78*ln (.792) = 28.95 yc = (m/2k)*ln ((mg+kv2)/ (mg))  (.38125/(2*.00154))*ln(3.73625+12.94291)/(3.73625)) = 123.78*1.496) = 185.188  ta = (tan-1(v/qa))/qb  (tan-1(91.676/49.256))/.199 = 1.861/.199 = 9.353sec y1 + yc = total altitude  28.95+185.188 = 214.138m = 702.55 feet

Design Proposal: Bill of Materials PART DESCRIPTION QUANTITY UNIT COST Shipping TOTAL Parachute 15.5” diameter nylon 1 chute (6 shroud lines) $5.00 $1.75 $6.75 Centering Ring 0.6” dia, 0.25” thick 2 Centering Ring kits $1.35 $4.95 $7.65 G10 Fiber glass Fin 7” x 5” x 5” Fiberglass 2 Fins $24 $8.00 $32.00 Altimeter Perfectflite Alt15KA 1 Altimeter $55.00 $0 Engine Estes C6-3 & D12-3 2 packs of 3 each $10.79 & $15.99 $6.99 $51.11 Body tube 2.6”/2.59” out/in dia. 14” height 2 tubes per pack $5.09 $10.18 Body Tube 0.967”outside diameter 18” height 3 tubes per pack $4.79 $5.95 $10.74 Body Tube Coupler 2.59” outside diameter 3 couplers $3.98 Shock Cord 140 lb Strength 3 feet $.25/foot $0.75 0.5” Kevlar Tubular 2 yards $3.93/yard $6.95 $14.82 Clip Whips Cluster Whips 2 engine clusters $13.99 $18.94 Nose Cone Polystyrene PS 9” long , 2.6” diameter 1 cone $14.53 $7.60 $22.13 Recovery Wadding Recovery sheets 75 Sheets $3.19 Launch Lug ¼ in. dia 1 launch lug $2.49 $8.44   TOTAL COST $253.63

Design Proposal: Build Process Body tube & Motors Motor mounts Parachute Shock cord Payload & nosecone Padding, plastic bag Fins Final assembly Yeeea..nasi will have to do this slide

Prototype

Test Results Durability Test Criteria How Tested Expected results Actual Results  Safety    Check signs of unsafe damage  Rocket remains intact The rocket flew safely during all 5 tests. Durability    Check for signs of deterioration  Be ready to fly again Had to be repaired 3 times after test flights  Parachute  Check for rips or holes  No tears, still attached Remained intact  Altitude   Read altimeter after each test flight  725 and 775 feet Reached target altitude 0/5 tests.  Flight Consistency Time each flight  Flight be between 35-55 seconds Within time constraints 1/5 tests (too short) Explain test plans here instead of making a pointless slide for them

Individual Test Results Score Pass or Fail? Safety 2.776 Pass Durability   4.556 (after flights) Parachute N/A Altitude 400 (=avg 350ft) Fail Flight Consistency 458.8 (avg overall score) I donno about this….

Test Results cont.

Refine Design Less open space in body tube Aesthetic Appeal Stability 3 fins vs. 2 2 x D12-3 Motors (no C6-3 Motors) Less open space in body tube Egg Altimeter Parachute Aesthetic Appeal Body tube: Blue, Nose Cone: Green PERFECTION 47

Final Solution Also, add test results of refined Height Weight

To Conclude