Abstract: Embodiments disclosed include a rotary-wing drone that includes a drone body and linking arms, such that a propulsion unit is located at the distal ends of the linking arms. The rotary-wing drone may also include a stiff battery pack with at least one fixation means and a guiding profile. The drone body may also include a platform with at least one guiding rail configured to cooperate and receive the complementary guiding profile of the battery pack and at least one fixation means complementary to the fixation means of the battery pack so that the battery pack attaches onto and stiffens the drone body.

Abstract: Disclosed are embodiments of a rotary-wing drone that includes a drone body with two front linking arms and two rear linking arms extending from the drone body with a propulsion unit located on a distal end of the linking arms. The points of fixation of the front linking arms and the points of fixation of the rear linking arms are located at different respective heights with respect to the horizontal median plane of the drone body. The two front linking arms of the drone may form a first angle of inclination with respect to the horizontal median plane of the drone body and the two rear linking arms may form a second angle of inclination. Additionally, the linking arms of the drone may further be adapted to be folded over along the drone body.

Abstract: Disclosed are embodiments of a rotary-wing drone that includes a drone body, linking arms that extend from the drone body with a propulsion unit located on a distal end of the linking arms, and at least two drone supports extending from the drone body. The drone supports may include a lifting means so that the drone supports are able to be lifted when the drone flies, where the drone supports come into alignment with the linking arms. The drone supports may form the leading edge of the rear linking arms and/or the trailing edge of the front linking arms of the drone.