F110 rich stability cutback

[r4y30n]

In the Omega Tau podcast posted earlier Okie mentions around 1h37m that the F110 starts to cut back to min burner when at high AoA and low airspeed, under 150 kts. Contrary to that, I found a white paper from GE and Grumman titled "F-14 Re-Engining with the F110 Engine" that shows a cutback region starting at 30,000 ft and about .35 mach and going up to about 50,000 ft and 1.00 mach. The paper seems to suggest that air mass flow was the sole limitation rather than AoA...

 

From those in the know, how did the system work in practice? Does it cut back the burners at very low speed regardless of altitude and the paper just doesn't have test results at those speeds? If so, why does full burner work when parked on the ground?

 

http://omegataupodcast.net/333-flying-and-simulating-the-f-14-tomcat/

[r4y30n]

Finally found a more accurate chart in the F-14D NATOPS. Essentially burner will be cut to min anywhere above 37,000 ft at 0 airspeed and almost linearly increases in altitude with speed to 50,000 ft at 0.9M, it gets steeper beyond that. Full burner is available 2,500 to 5,000 ft below that.

 

Long story short, you have to be very high and slow to hit cutback.

[Banzaiib]

Are you guys talking about two different things? It's entirely possible that the ECU adjusts based on lots of different factors, including combinations of AOA, altitutde, airspeed, etc.