ber. It was used, rotation was to obtain with a stop watch the time however, mostly as a chock on fche other tests, and the required for several hundred turns of the swirl meter. conclusions given at the end of this report are based This method is considered less reliable than the photo- mostly on… … CronH ong/et deg. Figure 12.—Effect of engine speed on rate of air swirl when shroud arrangement A was used.
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