The drivers for move of the rockets are designed in form that or the other version of the Laval nozzle.The reactive force of the traction which is created by such drivercan essentially be increased if in the outer section of nozzle is placed an active shock wave of stretching (depression): then the reactive force of the traction
The fundamental conclusions for shock waves lead from the second principle of thermodynamics. In the yours text-books such condlusions are made on the base of Zemplen theorem:
Of course, the specialists on hydromechanics - scientists, engineers - read a Web-journal of the School of Engineering and Applied Sciences of Harvard University. You are surprising why they keep silent. Let us think together. <!--break--!>
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