Author: Marian Jeż
Title: Piston engine dynamics
Cover: paperback, glued binding
The year of publication: 2003
Publisher: Scientific Publishers of the Institute of Aviation
Quantity pages: 142
Language of publication: polish
Description: The subject matter of this publication is the dynamics of the piston engine. The possibility of reduction of piston engine vibrations by using passive and active vibration isolation techniques is presented. Developed, implemented and used experimental, analytical and numerical simulation methods of researchers are presented. Static balance of piston engine suspended on non-linear, progressive elastic elements was studied. Suspension deformations and potential energy contained in it for six characteristic states of aircraft in flight are presented. A simplified, non-linear, dynamic model of suspension in the plane of extortion was defined. Effective values of acceleration obtained by numerical simulation were agreed with the results of measurements of the same physical quantities on the plane.
Non-linear resonance curves were calculated using asymptotic methods and confronted with curves obtained by numerical simulation. In the course of simulation tests, the dynamic model was first subjected to standard extortion in order to examine its reactions and properties. Then a simulation of the dynamic model with polyharmonic extortion was carried out, both in steady and transient states. The experimental results of several suspension variants concern the dynamic behaviour of dynamometers on a dynamometer and on an aircraft during airport tests.