One of the Silverplate propellers is still in operation.

In the late 1940s Texas A&M built a wind tunnel at their Easterwood Airport (CLL) in College Station Texas. To provide the wind, they were somehow provided with one of the Silverplate propellers, I presume a spare of that had been in storage and became surplus. The blades were cut down to a smaller diameter.

Somewhere around 2010 I was attending a firefighter course at Texas A&M, and one of my fellow students was an employee at the wind tunnel. After class, he took a group of us on a tour of the facility and it was really quite interesting. He pointed out the propeller and its source. The wind tunnel, now called the Oran W. Nicks Low Speed Wind Tunnel, is still in operation, and I presume still powered by the same propeller.

Lockheed proposed a bomber version of the Constellation.

Earlier Lockheed Constellations were powered by the same series as the B-29 engines. The troublesome BA series. The later Connies and DC-7’s have engines with the turbo compounding DA and EA series.

From what I can determine, the specific variant, the Wright Aeronautical Division R-3350-41 (Cyclone 18 787C18BA3) was not used on any other aircraft, though R-3350-series engines were used on the Douglas DC-7 and Lockheed Constellation commercial airliners.