The drag is unchanged by extending the fuselage cylindrically downstream, and then reversing the flow direction.
The forward section of the fuselage, which would have housed the covered pilot's cockpit and forward observer's cabin, was missing.
By digging through the loose snow by hand, the author managed to crawl inside the fuselage and found it remarkably well-preserved.
Unfortunately, the large fuselage number on one side had been scoured away by wind.
However, many parameters are uncertain, including the change of rotor revolution speed and the moment of the fuselage.
This was the only identifying marking found on the entire fuselage during the brief survey.
Another important parameter is the hub tilt spring constant, which influences coupling between the rotor and fuselage.
There are useful sections dealing with the design of fuselages and wing-fuselage intersections.
