Patent ID: 11945572
Assignee: nan
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 20:
21. An aircraft, comprising:
a body;
a robotic arm extending from the body, the robotic arm comprising an end effector, the robotic arm terminating in the end effector, wherein the end effector is configured to grasp, carry, and release payloads;
one or more main rotor assemblies;
a variable length tail extending from substantially the opposite side of the body with respect to the robotic arm, and a plurality of linked elongated electrical battery cells spaced parallel to each other along the variable length tail, wherein the tail is configurable with varying length by rolling-in and rolling out;
a motor to regulate the length of the variable length tail by rolling-in and rolling out the tail; and
a controller linked to the motor and to the robotic arm, wherein the controller is configured to maintain position of the center of mass of the aircraft in response to changes in weight held by the end effector by causing the motor to roll-in and roll out the variable length tail.