The Flyter startup has published a video about the tests of the propeller-motor group for the Flyter JR cargo drone with a take-off weight of up to 30 kg and a payload weight of up to 10 kg. As part of the first stage of the project, the team built a stand and tested lifting propeller-motor groups on it. As a result of the tests, we selected the composition of the propeller-motor group. The results indicated an under-wing mounted motor and propellor consumed 13% more energy than the same equipment mounted above the wing.