Test Data T900
Yes Woj I see exactly. That's one HELL of a wobble!
If readers would open the above link and go to page 14.
The graph of amplitude on the LP shaft.
(inches per second amplitude vs shaft speed %)
Redlines are upper and lower recorded movement in inches per sec.
Blue line is the mean...the average.
Context: THIS IS DATA FROM THE T900
This is IN FLIGHT data from 200 hours of testing.
Think we can assume this would be a T970, maybe, but we don't know the airframe it was fixed on.
The graph tells us that when the throttle is set to 61% we have:
A wobble of between 0,42 inches and 1.20 inches per second WOW!
It has been pointed out that is OK. I hope TURBINE D can help us out here.
To many of you the consequences of this will be self evident.
Most of the data in this document uses the T500 as the source. But there are several references to the T900 and T1000 in the document which is worth reading very carefully.
Then we have the additional uncertainty of data for the T972 as used in the Qantas.
Last edited by DERG; 7th Feb 2011 at 18:38.
Reason: additional