4" 1/2 Scale Nike Apache Nosecone This is my entry for the 3D Design Contest. It is a 4” nosecone for an Apache, as part of a half-scale Nike Apache project I have been going at for a few years. The NC curve is modeled from “Rockets of the World” by Peter Alway. This is designed for a StrataSys 1200es printer we have at work and it prints in ABS in my case. Build volume for the part expects 300mm for the NC. It does expect to be able to use support material where needed in this CAD configuration. Some salient points are: Bayonet fitting with reinforced locking ramps Alignment of the NC over the coupler Shear-pin holes PCB retention, with screwdriver access holes. Designed for standard 4” airframe Reinforcing ribs on the base and in the NC Access holes for RBF pin switches are also altimeter breather ports PCB sled is designed for 54mm birds and has mounting holes and web support. The outer part of the design can be changed to make 75mm, 54mm, or whatever diameter nosecones to fit the sled. Lots of fillets to mitigate stress raisers Designed for minimal mass (that I think I can get away with ) Build thread here for the Nike Apache for more details if you are interested https://forum.ausrocketry.com/viewtopic.php?f=6&t=5019 Quite a few flights solo also. https://forum.ausrocketry.com/viewtopic.php?f=6&t=5940 It is also my go-to NC for everyday flying, and has just seen duty flying on the Velociraptor R https://forum.ausrocketry.com/viewtopic.php?f=6&t=1782&start=60 as a test platform for my VTS. https://forum.ausrocketry.com/viewtopic.php?f=56&t=5324 Enjoy! If anyone needs a format other than the STEP files I have provided, please let me know. It is in SolidWorks currently. Share and Enjoy!