Design an attachment bracket for ULA’s current Atlas V Centaur launch vehicle.
Sometimes it really is rocket science. ULA is challenging the GrabCAD community with a competition where participants design a launch support attachment bracket for ULA’s current Atlas V rocket. The design will subsequently be evaluated for application on ULA’s next-generation Vulcan Centaur rocket, which will transform the future of space launch. ULA has successfully delivered more than 100 missions to orbit, and your design could contribute to missions that provide critical capabilities to save lives, explore the universe and connect the world.
The internal boattail support bracket will be used during ground processing at the base of the Atlas V payload fairing (see illustration below). It will be used at numerous locations around the vehicle upper stage, acting as a support point for work platforms on the days leading up to launch. The bracket remains with the upper stage of the rocket during flight. Launch vehicle weight has a first order effect on the performance of the system, so minimizing weight, such as in this bracket, dramatically improves payload weight to orbit.
All portions of the bracket must remain within the envelope shown in the Part Design Envelope drawing (see Download Specification button). The part will be fastened to the vehicle interface at datum A using 4 bolts shown as holes (marked Hole Pattern D) in the envelope drawing. A load from the work platform will be applied uniformly on a surface located at datum B and will be fastened using 2 bolts shown as holes (marked Hole Pattern E) in the envelope drawing. The minimum edge distance surrounding all bolt holes shall be 2 times the diameter of the bolt hole.
Maximum part weight: 0.1 lb
Minimum wall thickness: 0.040 inches
Ultimate load (due to work platform): 600 lbf applied uniformly in the negative Z direction (illustrated on the envelope drawing)
Required material: Ultem 9085 (material properties below)
Material Strength Allowable: 4500 PSI
Specific Gravity: 1.34
Young’s Modulus: 325 KSI
Poisson’s Ratio: 0.41
Non-Dissolvable support material
Your entry must include:
Description of the bracket
STEP/IGES formatted files
ULA Compliance Certification form (you will see this form once you click on "Submit an Entry" button)
The ULA Rocket Hardware Challenge marks the first time GrabCAD has hosted the opportunity for community members to design a piece of rocket hardware with ULA, and as a result, award eligibility is different for the ULA Challenge than other GrabCAD challenges. U.S. federal laws and regulations restrict eligibility to receive awards in this challenge. For more information about U.S. export control law, visit the below sites:
International Traffic in Arms Regulations , Office of Foreign Assets Control. The ULA 3-2-1 Liftoff Challenge is open to U.S. and non-U.S. applicants. When you sign up for this challenge, you’ll be asked to fill out a ULA Compliance Certification form to verify award eligibility for all team members. ULA will use this form to screen participants to ensure legal compliance and compliance with U.S. sanctions, embargoes, and prohibitions, and to make sure that the awards will be presented in accordance with these laws and regulations.
To learn more about designing for metal additive manufacturing, check out GrabCAD Blog.
YOUR ENTRY MUST INCLUDE: • STEP/IGES formatted files • Description of the bracket • Any render or image files (jpeg, png, etc) • Mass, Volume • Load calculations • ULA Compliance Certification form
TECHNICAL REQUIREMENTS: Please see above for complete technical requirements.
JUDGING CRITERIA: Judging criteria will be based on achievement of accomplishing criteria listed above, including:
Pass/Fail – meets the part design requirements
Minimize final part mass
Minimize total part material volume including print support material as measured in cubic inches
Unique features that leverage additive manufacturing technology
Use of good design practices (e.g. proper load path, sufficient radii, etc)
Ease of installation – takes into account tool access clearance, bolt/nut clearance, etc
Cleared for Open Publication, August 11, 2016, 16-S-2501
ENTERING THE COMPETITION The Challenge is open to everyone except employees and families of GrabCAD and the Sponsor. Multiple entries are welcome. Team entries are welcome. By entering the Challenge you: 1. Accept the official GrabCAD ULA Special Challenge Terms & Conditions. 2. Agree to be bound by the decisions of the judges (Jury). 3. Warrant that you are eligible to participate. 4. Warrant that the submission is your original work. 5. Warrant, to the best of your knowledge, your work is not, and has not been in production or otherwise previously published or exhibited. 6. Warrant neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trademark, copyright or any other intellectual property right) of any other person. 7. Warrant participation shall not constitute employment, assignment or offer of employment or assignment. 8. Are not entitled to any compensation or reimbursement for any costs. 9. Agree the Sponsor and GrabCAD have the right to promote all entries. If you think an entry may infringe on existing copyrighted materials, please email firstname.lastname@example.org.
SUBMITTING AN ENTRY Only entries uploaded to GrabCAD through the "Submit entry" button on this Challenge page will be considered an entry. Only public entries are eligible. We encourage teams to use GrabCAD Workbench for developing their entries. Entries are automatically given the tag "ularocket" when uploading to GrabCAD. Please do not edit or delete this tag. Only entries with valid tag will participate in the Challenge.
AWARDING THE WINNERS The sum of the Awards is the total gross amount of the reward. The awarded participant is solely liable for the payment of all taxes, duties and other similar measures if imposed on the reward pursuant to the legislation of the country of his/her residence, domicile, citizenship, workplace, or any other criterion of similar nature. Only 1 award per person. All judging decisions are final. All winners will be contacted by the GrabCAD staff to get their contact information and any other information needed to get the prize to them. Payment of cash awards is made through PayPal. All team awards will be transferred to the member who entered the Challenge. We will release the finalists before the announcement of the winners to give the Community an opportunity to share their favorites in the comments, discuss concerns, and allow time for any testing or analysis by the Jury. The Jury will take the feedback into consideration when picking the winners. Winning designs will be chosen based on the Rules and Requirements. - Entry deadline is October 23, 2016 (11:59pm UTC). - The finalists will be announced by November 18, 2016. - The winners will be announced by December 9, 2016. Void where prohibited.
SPEC REFINEMENT We want to make sure that you have all of the information that you need to tackle the challenge. As such, in the first week of a challenge we may refine the specifications or offer clarifications based on member feedback. Please ask any questions that you have!
$4,500 in prizes for top 3 places!
$3,000 and ULA merchandise prize pack
$1,000 and a ULA hat
$500 and a ULA T-shirt
The jury is comprised of experts from ULA.
With more than a century of combined heritage, United Launch Alliance is the nation’s most experienced and reliable launch service provider. ULA has successfully delivered more than 100 satellites to orbit that provide critical capabilities to save lives, explore the universe and connect the world. Our vision is that we will unleash mankind’s potential in space.
For more information on ULA, visit the ULA website at www.ulalaunch.com.
Join the conversation at www.facebook.com/ulalaunch, www.twitter.com/ulalaunch and www.instagram.com/ulalaunch.