An exemplary embodiment of the present disclosure provides a modular and reconfigurable aircraft including a first aircraft module, a second aircraft module, a plurality of connectors, and a coupler. The first aircraft module can include a polyhedral cage structure, a propeller disposed in an interior of the polyhedral cage structure, and a motor disposed in the interior of the polyhedral cage structure and configured to drive the propeller. The second aircraft module can include a polyhedral cage structure, a propeller disposed in the interior of the polyhedral cage structure, and a motor disposed in the interior of the polyhedral cage structure and configured to drive the propeller, a plurality of connectors configured to couple the polyhedral cage structure of the first aircraft module to the polyhedral cage structure of the second aircraft module.

An exemplary embodiment of the present disclosure provides a modular and reconfigurable aircraft including a first aircraft module, a second aircraft module, a plurality of connectors, and a coupler. The first aircraft module can include a polyhedral cage structure, a propeller disposed in an interior of the polyhedral cage structure, and a motor disposed in the interior of the polyhedral cage structure and configured to drive the propeller. The second aircraft module can include a polyhedral cage structure, a propeller disposed in the interior of the polyhedral cage structure, and a motor disposed in the interior of the polyhedral cage structure and configured to drive the propeller, a plurality of connectors configured to couple the polyhedral cage structure of the first aircraft module to the polyhedral cage structure of the second aircraft module.

An unmanned aerial vehicle (UAV) has a flight-only mode with a motor only rotating propellers and not rotating on-board wheels to configure the UAV to fly away from a surface of a structure, and a crawling-only mode in which the UAV is configured to crawl on the surface due to the motor only rotating the wheels while not rotating the propellers. In the flight-only mode, a clutch disengages a motor from the wheels so that the motor only engages the propellers to fly to lift from the surface. In the crawling-only mode, the clutch disengages the motor from the propellers so that the motor only engages the wheels to move the UAV on the surface.

Provided herein are systems and methods for an unmanned aerial vehicle (UAV) to skid and roll along an environmental surface. A rollable UAV includes an airframe assembly, a propulsion system, and a logic device configured to communicate with the propulsion system. The airframe assembly includes a cylindrical rolling guard configured to allow the UAV to roll along an environmental surface in contact with the cylindrical rolling guard. The logic device is configured to determine a rolling orientation for the UAV corresponding to the environmental surface, maneuver the UAV to place the cylindrical rolling guard of the airframe assembly in contact with the environmental surface, and roll the airframe assembly of the UAV along the environmental surface at approximately the determined rolling orientation while the cylindrical rolling guard is in contact with the environmental surface.

Provided herein are systems and methods for an unmanned aerial vehicle (UAV) to skid and roll along an environmental surface. A rollable UAV includes an airframe assembly, a propulsion system, and a logic device configured to communicate with the propulsion system. The airframe assembly includes a cylindrical rolling guard configured to allow the UAV to roll along an environmental surface in contact with the cylindrical rolling guard. The logic device is configured to determine a rolling orientation for the UAV corresponding to the environmental surface, maneuver the UAV to place the cylindrical rolling guard of the airframe assembly in contact with the environmental surface, and roll the airframe assembly of the UAV along the environmental surface at approximately the determined rolling orientation while the cylindrical rolling guard is in contact with the environmental surface.

Walking VTOL vehicles and related systems and methods are disclosed. A representative system can include one or more vertical thrust propulsion systems for providing vertical thrust for the vehicle, one or more horizontal thrust propulsion systems for providing horizontal thrust for the vehicle, and leg elements that are rotatable between a first configuration in which each leg element extends downwardly and a second configuration different from the first configuration. A representative method of operating a vehicle includes using vertical thrust to raise the vehicle upward, rotating a leg element forward, lowering the vehicle, and then rotating the leg element rearward to propel the vehicle forward.

An unmanned aircraft (100) according to the present disclosure is equipped with a flight propeller (2) and includes a main body (1), a locomotion unit having an aquatic locomotion mechanism and a terrestrial locomotion mechanism independent of the flight propeller, and a connector that connects the main body and the locomotion mechanisms.

In some embodiments, a multi-modal robot can be capable of aerial mobility and ground mobility, and can switch between configuration. The multi-modal robot can include a chassis, and a leg attached to the chassis. The leg can include a frontal hip joint. The frontal hip joint can rotate around a frontal hip axis of rotation. The frontal hip axis of rotation can be parallel to a longitudinal axis of the chassis. The leg can further include a sagittal hip joint, wherein the sagittal hip joint is coupled to the first distal end of a first link. The sagittal hip joint can rotate around a sagittal hip axis of rotation. The leg can include a wheel. The wheel can be configured to rotate around a wheel axis of rotation. The leg can further include a propeller. The propeller can be co-axial with the wheel.

A vehicle includes a propulsion system using one or more impellers as opposed to propellers. The impellers impart circumferential and radial velocity components to the working fluid, which may be air or water. The air is deflected by counter-vortex chambers in a shroud to convert the circumferential and radial velocity to an axial velocity aligned with the axis of rotation of the impeller.

A flying robot includes a body portion, a propulsion portion including a plurality of propulsion units configured to generate propulsion force by driving rotor blades, the plurality of propulsion units being provided at the body portion, a plurality of leg portions configured to support the body portion, each leg portion of the plurality of leg portions including at least one joint and being configured to be able to change a posture of the leg portion, and a controller configured to control the plurality of leg portions when landing on a landing surface from a flying state, and the controller controls part or all of at least one leg portion among the plurality of leg portions to adjust a tilt of the body portion from when the at least one leg portion comes into contact with the landing surface until when landing on the landing surface is completed.