In the 1960s, NASA experimented with this concept with the Northrop X-21, a converted Douglas WB-66D.
The Northrop X-21 modified the WB-66D with an unusual wing to conduct Laminar Flow Control studies.
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507E electrically powered UAV is a fixed wing that resembles a scaled down version of Northrop X-4 Bantam without the inlets because instead of jet engines used on X-4, 507E is powered by a propeller driven pusher engine mounted at the empennage.
UAV Sci-Tech has developed an electrically powered micro air vehicle (MAV) that resembles a miniature version of Northrop X-4 Bantam without the inlets because Swift III is powered by a two-blade propeller driven by a pusher engine mounted at the end of the empennage.