LV3: Open-hardware Carbon Fiber Rocket Joe Shields Leslie Elwood Erik Nelson Jacob East Brandon Bonner

Mission Statement Design, fabricate, and document two lightweight rocket airframes using the 2014 capstone team’s processes... and cry

Presentation Overview Deliverables Review Results Discussion & questions

Updated Project Schedule Task Date Purchase / Acquire material 2/19 Machine coupling rings 3/4 First CF pieces fully cured Fin frames machined 5/20 Nose cone 6/17 Airframe modules complete (4 of 4) Fin cans complete (1 of 2) 6/10 Documentation (On Schedule) 6/6 AIAA paper 8/1

Project Budget PSAS budget $1,500 Beta Project budget (nosecone only) $1,000 Everything else donation based ~$100,000

Rocket Parts

Nose Module Female mold cut out of machinable foam (Machine time donated by ESCO Corp.) Layup inside of mold instead of outside a mandrel. Halves joined by second layer of CF. 2 halves co-molded with coupling ring during joining layup

With Exterior Adhesive Without Exterior Adhesive Airframe Modules With Exterior Adhesive Without Exterior Adhesive Advantages: Improved surface finish Improved structural strength Disadvantage: Use of expensive/difficult to obtain adhesive film Is not the industry standard Advantages: Minimal weight/material use More aligned with composite standards. Disadvantage: Weaker Cells are not 100% wetted with epoxy.

Airframe Modules: MFG Layer order: vacuum bag release film shrink tape adhesive* carbon fiber adhesive honeycomb aluminum mandrel

Fin Frames Machine Science Corp. donated all the material and machine time for our coupling rings and fin frames Fin frames provide solid structure for stability and to reduce flutter

Documentation 3 different documents: Capstone Report PSAS Report AIAA

Material Acquisition Very difficult to build a rocket on a capstone budget Spent weeks soliciting for donations Donating companies Pacific Coast Composites Machine Sciences Corporation Boeing Esco

Pacific Coast Composites Found PCC, based out of Lakewood Donated ~$20,000 of material Carbon Fiber Adhesive Fiberglass

Machine Sciences Corporation Based out of Wilsonville Cutting edge machine shop Donated: materials machine time technical advice

Machine Sciences Corporation Fin frames: metal leading edge rigid anti-flutter Challenging to machine within necessary tolerance Coupling rings connect modules

Boeing Donated ~$60,000 worth of material from Auburn facility Carbon fiber Adhesive Vacuum bagging material Fiberglass

Re-donation to WSU/OSU Got more material from Boeing than we could store Donated to WSU rocket club and OSU Dynamic Robotics Lab (approx $18,000) Helped VMS capstone make CF muffler enclosure

Generations of Layups

Testing Compression Test Results Brittle failure at 10 000 lbf Pinging (like yield) at 7 000 lbf

Testing Surface roughness results 8 thou feature size for black modules 0.15 thou feature size for blue, sanded modules Drag analysis pending

Results 3 complete fins were bonded to 1 of our 2 flight ready motor modules (24”) Required documentation is on schedule for completion by deadline Nose module mold is assembled waiting to be machined and is on track for completion before launch date

Questions