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38 CHAPTER 2 Maturity and Pride, 1941–1957<br />
FIGURE 2-23.<br />
A McDonnell F-101 was<br />
flown at Langley in 1956<br />
for investigations of sonic<br />
boom phenomena. The<br />
project produced data<br />
used today in the United<br />
States sonic boom database.<br />
The airplane carries<br />
a large NACA tail band as<br />
well as Air Force markings.<br />
(EL-2002-00289)<br />
FIGURE 2-24.<br />
In 1957, Langley conducted<br />
flight tests of<br />
a Grumman F-11F-1 to<br />
obtain data for correlation<br />
with wind-tunnel and theoretical<br />
results obtained<br />
on NACA aerodynamicist<br />
Richard Whitcomb’s area<br />
rule. The NACA tail band<br />
lacked the gold color<br />
typically carried by other<br />
research aircraft. (NACA<br />
LAL 57-2253)