Noise abatement? Air mail route CAM-11, Cleveland - Youngstown - Pittsburgh, was operated with small planes by Clifford Ball Airline, ancestor of Capital Airlines, which was based at Pittsburgh's first airport. Westinghouse engineer Thomas Spooner is measuring the characteristics of the purr of the aeroplane here. The pilot is Merle Moltrup. Photo from: MIT Museum
This photo was added on 21 June 2024, and has since been viewed 165 times.
|