Dynamic Vibration Analysis of Engine and Propeller:

In an effort to smooth out vibration a member brought his Cessna 210 to our hangar to see if we could help.  After about 20 minutes of prep-work we installed our DSS Microvib II Aircraft analyzer.  We test ran the aircraft to find that his vibration levels were .731 IPS (inch per second).  We added our test weights and made a few more test runs.  Then after establishing a vibration solution, we added our permanent weights.  One last test run revealed that we had reduced the vibration level to .009 IPS.  After 2 hours and 4 test runs we had reduced the vibration levels by a significant percent.

CPA offers Dynamic Vibration Analysis for $175 for each prop using the latest, sophisticated computer equipment and software.  Dynamic propeller/engine vibration analysis allows us to check and fine tune the engine and prop vibration.  This service will help extend the life of your engine/prop and airframe while reducing pilot fatigue.  Excessive vibration and stress caused by the difference in the center of mass to the center of rotation of the propeller and engine can cause stress in the whole airframe.  The vibration from the engine propeller combination may in turn cause excessive wear in bearings, bushings, shafts, gears, cabling, hoses, cowlings, radios, instruments and exhaust systems substantially reducing their service life. These vibrations can set up highly undesirable stresses in structures which may eventually lead to structural failure. 

Vibration analysis of the engine propeller combination is highly advisable in order to help improve the quality of ride, bearing life while minimizing vibration, noise, airframe stress, pilot fatigue, and power loss.

If you wish to take advantage of the special services that CPA has to offer please contact services@cessna.org or call 805/934-0493.