The chordwise lines under the wings are aerial wires, not ribs - others were located on the fuselage sides. Interference from the ignition system was a problem.

View of a 1917 Royal Aircraft Factory AT, powered by a 35 h.p. ABC Gnat flat twin engine.

AT No 11 on its handling trolley. First launch attempts were made from HMS Argus on July 12 and August 31, 1922.

An AT on its launcher aboard HMS Stronghold - AT No 11 may be seen in the fore­ground.

An AT caught at the moment of launch.

AT No 10 being retrieved following a sea landing.

The RAE 1922 AT was powered by a 45 h.p. Siddeley-Deasy Ounce engine. This AT had no undercarriage and was launched from a simple track aboard HMS Argus and, later, HMS Stronghold.

This Royal Aircraft Establishment side elevation of an Aircraft Target (AT) is dated February 28, 1917.