Thrust Map for jet engines

[pilot007]

Hi!

Have you ever heard of Thrust Maps for jets engines?
It is said to be a chart where you can read out the real thrust of the jet versus altitude and some other parameters... Is that something you guys deal with?

[N1 Vibes]

Greetings 007!

not sure about this, you cn certainly get charts of thrust vs EPR/N1. Thats available in the Engine Shop Manual under Testing. As for Thrust vs Alt not so sure.

Brgd's

N1 Vibes

[1Consultant]

Not sure why anyone would care about ACTUAL thrust at altitude, especially hard to pinpoint with the contant fluctuation of TAT. As you know, engines are rated at sea level and at a given temperature. If an engines thrust performance is adequate at sea level, the rating will provide satisfactory performane to the service ceiling. A SAT/TAT vs. Weight vs. Altitude Performance Chart is used to calculate (manually) power settings as required to hold speed and altitude in the cruise configuration. Of course, most modern aircraft have this cability automatically within the autoflight system. Turbulance Penetration Charts are also available to figure safe speed range and to prevent exceeding G-Force limitations in turbulent air. Driftdown charts will also help you identify your altitude capabilities in the event you lose one or more engines. But a thrust map? I've never seen one flying the DC-8, DC-10 or Boeing 727 or 747 aircraft. Could it be that the term Thrust Map is a colloquialism for a certain performance chart?