Cruise numbers: at 5,000 ft; aircraft weight = basic plus full fuel load; aircraft is clean. .5M: 2800 lbs per hour per engine (PPH) .6M 3300 PPH .7M 4300 PPH .8M 5500 PPH .85M 12800 PPH (.85M is max speed in mil thrust). More numbers: at 15,000 ft; aircraft weight = basic plus full fuel load; aircraft is clean. .5M: 2250 lbs per hour per engine (PPH) .6M 2600 PPH .7M 3150 PPH .8M 3800 PPH .85M 4600 PPH .9M 5300 PPH at 25,000 ft; aircraft weight = basic plus full fuel load; aircraft is clean. .5M: 2200 lbs per hour per engine (PPH) .6M 2250 PPH .7M 2400 PPH .8M 2750 PPH .85M 3100 PPH .9M 3700 PPH Acceleration times: At 6,000 ft MSL, MIL power. 360KIAS to 420 KIAS = 9 sec 360 to 480 = 19 sec 360 to 520 = 26 sec 360 to 550 = 33 sec Since your tweaking here is some general RPM vs % thrust of a turbojet info that may help: 50% RPM = 15% Mil thrust 60% RPM = 22% Mil thrust 70% RPM = 29% Mil thrust 80% RPM = 46% 90% RPM = 69% 95% RPM = 84% 99% RPM = 97% 100% RPM = 100% Altitude variation SL = 1.0 of SL thrust 5K = .95 of SL thrust 10K = .90 of SL thrust 15K = .84 20K = .78 25K = .72 30K = .67 35K = .61