tail boom
Noun
Meaning
tail boom (plural tail booms)
On an airplane or helicopter, a spar that connects tail surfaces to a fuselage.
Examples
The longer tail boom incorporated a wider chord vertical fin on the tail rotor pylon and larger synchronized elevators.
The main structure consists of two longitudinal main beams that run under the passenger cabin to the nose and back to the tail boom attachment point.
The semi-monocoque tail boom attaches to the fuselage with four bolts.