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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)

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