On P3Dv4 with a B737-400 or B737-500 (classic multipack Rikoooo) the plane (with after takeoff activation of the PA, SPEED = 250, ALT = 10000, A / T engaged, V / S = 1800 or 1500) loses too much climbing speed until you get off the hook. I manage to get it up by doing a lot of intermediate levels to make him regain speed.
On FSX, with the B737-800 I do not have the problem, with a V / S = 1500 the plane rises steadily up to 31000 ft.
If anyone can tell me what I'm doing wrong, it will save me time-consuming research.
fuel_flow_gain = 0.002 //Gain on fuel flow
inlet_area = 19.6 //Square Feet, engine nacelle inlet area
rated_N2_rpm = 29920 //RPM, second stage compressor rated value
static_thrust = 28000
afterburner_available = 0 //Afterburner available?
reverser_available = 1 //Thrust reverser available?
ThrustSpecificFuelConsumption = 0.385 //Thrust specific fuel consumption (Jets)
AfterBurnThrustSpecificFuelConsumption = 0 //TSFC with afterburn/reheat engaged