![The ideal shape for a multirotor 'ducted-fan' that can dramatically improve thrust and flight time. | Capolight Electronics Projects. The ideal shape for a multirotor 'ducted-fan' that can dramatically improve thrust and flight time. | Capolight Electronics Projects.](https://capolight.files.wordpress.com/2015/01/combined.jpg)
The ideal shape for a multirotor 'ducted-fan' that can dramatically improve thrust and flight time. | Capolight Electronics Projects.
![super fan duct for ultimaker -- delicious clam - Third party products & modifications - UltiMaker Community of 3D Printing Experts super fan duct for ultimaker -- delicious clam - Third party products & modifications - UltiMaker Community of 3D Printing Experts](https://content.invisioncic.com/ultimake/monthly_2016_04/6a4bc2d9c6bac154.png.4b17a44b1f927b8f2685f77d0f24abc1.png)
super fan duct for ultimaker -- delicious clam - Third party products & modifications - UltiMaker Community of 3D Printing Experts
![a) The fan configuration and inlet duct. b) The simple geometry layout... | Download Scientific Diagram a) The fan configuration and inlet duct. b) The simple geometry layout... | Download Scientific Diagram](https://www.researchgate.net/publication/351134157/figure/fig1/AS:1017779440324618@1619668936813/a-The-fan-configuration-and-inlet-duct-b-The-simple-geometry-layout-for-the-numerical.png)