Unmanned aerial vehicle

An unmanned aerial vehicle, comprising:

• a fuselage;
• a wing assembly coupleable to the fuselage;
• an empennage including a pair of tail booms configured to be removably coupled to the wing assembly;
• the wing assembly including a pair of boom interfaces located on laterally opposite sides of the fuselage, each boom interface protruding above a wing upper surface;
• and
• each tail boom having a boom forward end configured to be mechanically attached to one of the boom interfaces using an externally-accessible mechanical fastener.

A method of enhancing vehicle efficiency, comprising:

• attaching a pair of tail booms of an empennage to a wing assembly mounted to a fuselage by performing the following for each one of the tail booms:
• positioning a boom forward end of a tail boom against a boom interface of the wing assembly, the boom interface protruding above a wing upper surface;
• and
• installing at least one externally-accessible mechanical fastener through the boom forward end and into a threaded hole in the boom interface.