One of two Tupolev Tu-4s at the museum. With the original piston engines replaced by four Ivchenko AI-20K turboprops, this version was used as a drone carrier. In more recent years it has been displayed with a WZ-5 reconnaissance drone under each wing

A gift from Stalin in 1953 and refitted with turboprops between 1970 and 1973. The last PLAAF Tu-4 was retired in 1988. The red thing hanging undeneath the wing is a WZ-5 reconnaissance drone, which entered service in 1981.

One of twenty (!) Luftwaffe Alpha Jets which landed at Waddington for fuel after simulated attacks on the UK during Exercise Elder Forest 87/1.

Tupolev developed the Tu-2 from Boeing B-29 WW2 bombers, of which one is seen here with RPV/drones under its wings

Obviously a Chinese derivative of the B-29 but note that turboprop engines have replaced the piston originals.

There are two of these extraordinary turboprop conversions of the Russian-built B-29 at Datangshan, one an AEW variant and this drone carrier. The engines were the Ivchenko AI-20, as used in the Il-18