Pistons to Jets
Автор: ALBERT G. STERN
Издательство: US Government Printing Office
Размер: 10 Mb
Engines are the hearts of airplanes. Before the age of powered flight, variations of balloons and gliders challenged the sky and scored some victories. With the introduction of power plants, aircraft became more obedient to the human beings who manipulated those engines than to the meteorological whims of the wind.