Abstract: A vehicle comprises a propulsion assembly that includes a rotor system configured to swivel about a pivot axis and a flight control system in communication with the propulsion assembly. In one embodiment, the pivot axis is fixedly oriented at an angle relative to a lateral axis of the vehicle in a plane defined by a longitudinal axis of the vehicle. The flight control system is configured to activate a particular operational mode of the propulsion assembly, in which the rotor system is configured to swivel about the pivot axis to move a rotor axis of the rotor system from a first gimbal angle to a second gimbal angle. In various embodiments, the gimbal angle is configured to change a center of gravity, or direction of thrust vectors, or attitude of the vehicle. The operational mode may comprise a one engine inoperative (OEI) mode in an example embodiment.

Abstract: A male part and a female part can reversibly couple aircraft to one another using an attachment mechanism. The male part includes a wall forming a shaft and is operable to attach to a first aircraft. The female part includes a wall forming a cavity and is operable to attach to a second aircraft. The attachment mechanism can regulate a mechanical engagement between the shaft on the male part and the cavity on the female part while the first aircraft and the second aircraft are airborne or on land. The attachment mechanism is operable to switch between an engaged position and a disengaged position. In the engaged position, the attachment mechanism initiates the mechanical engagement to rigidly attach the first and the second aircraft to one another. In the disengaged position, the attachment mechanism discontinues the mechanical engagement to detach the first and the second aircraft from one another.

Abstract: A vehicle comprises a propulsion assembly that includes a rotor system configured to swivel about a pivot axis and a flight control system in communication with the propulsion assembly. In one embodiment, the pivot axis is fixedly oriented at an angle relative to a lateral axis of the vehicle in a plane defined by a longitudinal axis of the vehicle. The flight control system is configured to activate a particular operational mode of the propulsion assembly, in which the rotor system is configured to swivel about the pivot axis to move a rotor axis of the rotor system from a first gimbal angle to a second gimbal angle. In various embodiments, the gimbal angle is configured to change a center of gravity, or direction of thrust vectors, or attitude of the vehicle. The operational mode may comprise a one engine inoperative (OEI) mode in an example embodiment.

Abstract: A male part and a female part can reversibly couple aircraft to one another using an attachment mechanism. The male part includes a wall forming a shaft and is operable to attach to a first aircraft. The female part includes a wall forming a cavity and is operable to attach to a second aircraft. The attachment mechanism can regulate a mechanical engagement between the shaft on the male part and the cavity on the female part while the first aircraft and the second aircraft are airborne or on land. The attachment mechanism is operable to switch between an engaged position and a disengaged position. In the engaged position, the attachment mechanism initiates the mechanical engagement to rigidly attach the first and the second aircraft to one another. In the disengaged position, the attachment mechanism discontinues the mechanical engagement to detach the first and the second aircraft from one another.