GrabCAD 模型信息
Safety Performance Shroud · 模型 239888
Safety Performance Shroud (SPS) *Designed to be printed in nylon using FDM with the shroud inlet oriented downward. *Requires support material or breakaway support structures. *Improves safety and performance of multi-rotors in any industry, but is ideal for applications that require a close proximity to people and/or involve hovering for the majority of the time (ie photography or video recording). Two primary concerns for multi-rotor operators are performance and safety. Multiple designs for propeller guards exist on all sizes of multi-rotors, but they all share the disadvantage that the improved safety must come at the price of adding dead weight. This added weight hinders endurance and the craft’s maneuverability, which in turn can have its own negative impacts on the safety of those nearby. Research has found that, for a given propeller diameter, a properly designed shroud can result in substantial gains in thrust and efficiency (Jason L. Pereira 2008), however, the difficulty comes in manufacturing such a shroud that is light enough to realize those gains. The first challenge is aerodynamic. With advances in the precision of FDM manufacturing, the shroud can be printed as a thin hollow shell. This is ideal, because the shroud, like skin on conventional aircraft, need only be strong enough to support its own weight and hold its shape against the aerodynamic forces it will encounter in flight. Next the motor mount, with the support legs doubling as stators, and the bracket for attaching the shroud to the airframe can easily be printed as one piece with the use of support material or breakaway support structures. The final hurdle is structural. With the skin being printed so thin, there must be additional support. Doubling the skin thickness would likewise double the weight, so another approach must be taken. This is where the capabilities of 3D printing are best utilized. A hexagonal arrangement of triangular support arches strengthen the inlet and keep it rigid. Additionally, a support ring strengthens the bottom lip, removing the need for dedicated landing gear. Both of these internal support structures are designed to be lightweight, and completely self-supporting, so that zero support material must be used inside the shroud. This results in a simpler and faster print process. In terms of numbers, the original front arm on the Horus weighs about 0.1 lbs depending on the type of carbon fiber. Using Nylon 11 with an optimized sup...
- 格式
- Rendering、STEP / IGES
- 分类
- 3D printing、Aerospace、Aviation
- 标签
- rotor、safety、duct、fan、multi、quad、shroud、copter、ducted、droneaccessory
- 数据更新
- 2026-10-24T09:22:11Z
