CFD is often undertaken for rocket plumes, where condensed phase constituents can be present in addition to gaseous constituents.
Those rocket plumes were pushing smart payloads toward long-range intercepts thousands of miles away, and scores of miles up.
Experiments D-4/D-7 involved making brightness measurements of celestial and terrestrial backgrounds and of rocket plumes.
"Precision targeting of the rocket hard body in the presence of the rocket plume is uncertain at this time," it says.
Subse- quent sensor hits showing large rocket plumes rising through the atmosphere, heading east.
Riding a steeply angled rocket plume, the scattered probes had cleared the limb of the ship, and their determined but tiny eyes could find nothing.
Just before we lost the last observation satellite, it reported a number of rocket plumes in the Soviet Union.
It would not do for them to remain too long under the rocket plumes, two fingers pointing at their position.
This would solve the decoy problem, since the rocket plume is unmistakable.
Then they spurted away on rocket plumes, leaving their prisoners exposed to open space.