Concentrating at the blade passing frequency and considering the existing understanding of square functional relationship between propeller steady thrust and shafting rotating speed, the fluctuating thrust is still set as a fixed proportion 5% of steady thrust at
different rotational speeds.
The engines did not shut down and both engines continued to produce thrust at
an engine speed above flight idle, but less than the commanded thrust.
Those patients in the study who had varus thrust at
baseline had a 3.97-fold higher risk of osteoarthritis progression, which was a statistically significant difference.
Those who had varus thrust at
baseline had a 3.97-fold higher risk of OA progression, a statistically significant difference.
The key benefit of this design is that the gases push with even thrust at
The engine, which is scheduled to be certified to 78,000lbs thrust by the end of 2015, will offer commonality for customers operating a combination of 787 Dreamliner models and provide margin to Boeing requirements for 76,000lbs of thrust at
entry into service.