srnet:
Whats the application and has it been done before ?The thought I had was that the drone may have stability issues with a near 1kg weight swinging around 1000ft below it.
Hi srnet. Sorry, I'm not sure I totally understand your question. The application will be extending/lifting a payload. I've found projects people have done where a drone is carry some type of payload on a line, but I haven't been able to find one that describes a way of retracting/extending the line other than simply raising or lowering the drone itself. This is not a feasible option for me because I need to lower the payload hundreds (perhaps over 1000ft) into a water basin. FAA regulations limit drone flight altitudes to 400 ft, which would limit the depth to 400ft.
Stability is a concern I have as well, but others haven't seemed to have much of an issue with a static line payload, so I'm not too worried about it. I'll have to see how the drone flies with the payload attached once I'm done building it. Planning on doing a static line test before getting too far along with the spooling system.