11th March 1949, Page 11
11th March 1949
Page 11

Page 11, 11th March 1949
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. - Exanlination Of .past. And Present Bus-running...
Sugge.sts the Question: Why Not Constant-speed. Engines? By j. V. Hewes I T has long been appreciated, especially in aircraft engineering, that an unfluctuating load and......