An airship comprises a plurality of electric power generators; a plurality of electrical buses; and a plurality of propulsion points each equipped with a propellant bundle formed from a plurality of thrusters of the electric-motor-driven propeller type. For each of the propulsion points, a thruster is electrically connected to one of the generators by way of one of the electrical buses, and another thruster of the propulsion point is electrically connected to another of the generators by way of another of the electrical buses.

A flight vehicle includes a drone with a pair of shaped protrusions mechanically coupled to the drone. One of the shapes is a hollow lift-producing shape, such as being a balloon filed with a lighter-than-air gas, and the other of the shapes is below the drone. The shape below the drone may be a hollow shape that does not produce lift, for example being a balloon filled with air. The shapes may be similar in size and shape, so as to provide similar drag characteristics. The shapes may be opposite ends of a support, such as a stick, rod, or other (relatively) slender structure. The vehicle includes a payload, such as radar calibration equipment or an antenna. The drone may be used to counteract wind forces on the flight vehicle, and/or to otherwise position the flight vehicle.

An unmanned and remotely controlled airship has a system of multirotors combined with an inflatable envelope. The airship may be lifted/powered by a power system that has three or more rotors. The airship may be constructed using rods, connectors, the main system/control box and the rotors. The airship system may have a systemic symmetry for weight distribution and flight control and may be, for example, a symmetric ellipsoid envelope/blimp.

An unmanned and remotely controlled airship has a system of multirotors combined with an inflatable envelope. The airship may be lifted/powered by a power system that has three or more rotors. The airship may be constructed using rods, connectors, the main system/control box and the rotors. The airship system may have a systemic symmetry for weight distribution and flight control and may be, for example, a symmetric ellipsoid envelope/blimp.

Some embodiments described herein relate to an aircraft that includes a support frame, at least one gas compartment, and multiple propulsion units. The gas compartment(s) can be coupled to the support frame and configured to contain a gas having a gas density less than the density of atmospheric air surrounding the aircraft during operation. Similarly stated, the gas-filled gas compartment(s) can produce a gas lifting force on the support frame. The propulsion units can each be configured to selectively produce a propulsive force with a thrust vector with a non-zero component along a vertical axis of the support frame. The maximum gross weight of the aircraft can be greater than either the gas lifting force of the maximum vertical propulsion force and less than the sum of the gas lifting force and the maximum vertical propulsion force.

An aircraft includes: a plurality of rotor units each including propeller and motor that drives propeller; a shock absorber covering an entire vertical length of a lateral side of the plurality of rotor units; and a plurality of rudders each being disposed downstream of a corresponding one of the plurality of rotor units and rotating about axis of rotation that extends in a direction intersecting a flow direction of air current generated by the corresponding one of the plurality of rotor units.

An aircraft includes: a plurality of rotor units each including a propeller and a motor that drives the propeller; a balloon that laterally covers the plurality of rotor units, across the height of the plurality of rotor units in the up-and-down direction; a camera that protrudes, along a predetermined axis, beyond the balloon; and a holding component that holds the camera and whose overall length can be shortened along the predetermined axis.

Unmanned and remotely controlled airship constituted from system of multirotor combined with inflatable envelope. The airship may be lifted/powered by a power system comprising three or more rotors. In some embodiments, the airship may be constructed using rods, connectors, the main system/control box and the rotors. The airship system may have a systemic symmetry for weight distribution and flight control and may be, for example, a symmetric ellipsoid envelope/blimp.

Unmanned and remotely controlled airship constituted from system of multirotor combined with inflatable envelope. The airship may be lifted/powered by a power system comprising three or more rotors. In some embodiments, the airship may be constructed using rods, connectors, the main system/control box and the rotors. The airship system may have a systemic symmetry for weight distribution and flight control and may be, for example, a symmetric ellipsoid envelope/blimp.

A falling-resistant and anti-drifting unmanned aerial vehicle has a main body and at least one rotor wing thereon. Both sides of the main body have a wing with an airbag filled with gas lighter than air. Bulges protruding downwards are arranged at the bottoms of the airbag. The two airbags are at the same height symmetrically arranged based on the main body. The airbag can function as an undercarriage when the aircraft lands down, and as a buffer when crash landing and then reduce damage to the main body. If the aircraft falls in water, the aircraft can float on the water to avoid damage caused by sinking. As bulges protruding downwards are arranged at the bottoms of the airbags, in spraying operation, side wing can be relatively well baffled by the bulges in case of side wing blowing in the flying process, resulting in less droplets draft.