GrabCAD 模型信息
"Eggs-2" Skycycle Rocket · 模型 258003
15-AUG: Added photos and video of Drop #2...FAILED (Sorry, no video link, so you'll have to download the files). After impact, the rocket flipped and stuck a landing worthy of the Olympics, but the egg broke. The egg broke on initial impact, so it appears that I need to make the sling stretch more. ------------------------------ 08-AUG: Added photos and video of Drop #1...FAILED. The rocket spun, the arms broke away, and the rocket did not bounce as intended, but in the end the egg still broke. Closer examination showed a hole on the tip of the egg, suggesting that the egg may have bottomed out against the frame. Also, one strut of the inner protective frame broke off and could have damaged the egg. .............................. 06-AUG: Added photos of initial 3D printed rocket. Printed rocket in 2 sections so that I could experiment with each half separately. 1) Upper Frame: I wanted to print using FDM without supports, so I increased strut thickness to minimize defects when 3D printing a column. If printing with supports or if using another 3D process, strut thickness could be reduced. 2) Lower Frame: Deciding if closing off the bottom (and sides) would result in any significant "parachute" effect that would justify the added weight and printing time. 3) Sling: Revised from 3 arms to 6 arms to provide more mounting options. If only using 3 arms as shock absorbers, the other 3 can be used as "seatbelts" to secure the egg better. Note: CAD files will be updated later to reflect final design proposal. ----------------------------- 01-AUG: Added STEP file of assembly and photos of flexible sling prototype. ------------------------------ Design Inspiration: In 1974, American stunt performer Evel Knievel failed to jump over the Snake River Canyon in his X-2 Skycycle Rocket. The parachute opened up too soon and the X-2 drifted to the bottom of the canyon with Evel Knievel unharmed. Will the 3D printed "Eggs-2" Skycycle Rocket protect its pilot from a fall of at least 15 ft (4.5m) without a parachute? Design Features: 1) Rocket shape to create preferred orientation during fall. Weight of egg makes it nose heavy. 2) Angled rocket fins create spin which may help reduce impact forces ("drop and roll") 3) Breakaway outer arms to absorb impact energy 4) Internal sling to hold the egg and to absorb impact energy. The sling would be 3D printed out of a flexible filament. NOTE: My limited CAD skills prevent me from showing the sling properly positi...
- 格式
- Rendering、STL、STEP / IGES、Other
- 分类
- 3D printing、Just for fun
- 标签
- techshop、3dprintingegg
- 数据更新
- 2026-09-22T08:39:15Z