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Prop aircraft "idle" to fast.


nightowl56

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I have a few prop / turbo prop aircraft that idle way to high. (They start rolling when idling). I know that I need to change something in the config file but could someone tell me which value I need to change? This is what currently is there for the engines and props.

 

[GeneralEngineData]

engine_type = 5

Engine.0 = 3.484, -13.573, 3.570

Engine.1 = 3.484, 13.573, 3.570

fuel_flow_scalar = 0.650

min_throttle_limit = -0.250000

max_contrail_temperature = -39.0

 

[propeller]

thrust_scalar = 1.0

propeller_type = 0

propeller_diameter = 11.981

propeller_blades = 4

propeller_moi = 320.000

beta_max = 45.000

beta_min = 11.500

min_gov_rpm = 27974.000

prop_tc = 0.004

gear_reduction_ratio = 24.700

fixed_pitch_beta = 0.000

low_speed_theory_limit = 80.000

prop_sync_available = 1

prop_deice_available = 1

prop_feathering_available = 1

prop_auto_feathering_available = 1

min_rpm_for_feather = 350.000

beta_feather = 79.3

power_absorbed_cf = 0.900

defeathering_accumulators_available = 0

prop_reverse_available = 1

minimum_on_ground_beta = 0.000

minimum_reverse_beta = -20.000

 

[TurbineEngineData]

fuel_flow_gain = 0.008

inlet_area = 1.200

rated_N2_rpm = 28950.000

static_thrust = 450.000

afterburner_available = 0

 

[turboprop_engine]

power_scalar = 1.000

maximum_torque = 11240.000

max_rpm_mechanical_efficiency_scalar = 1.000

idle_rpm_mechanical_efficiency_scalar = 1.000

max_rpm_friction_scalar = 1.000

idle_rpm_friction_scalar = 1.000

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I have a few prop / turbo prop aircraft that idle way to high. (They start rolling when idling). I know that I need to change something in the config file but could someone tell me which value I need to change? This is what currently is there for the engines and props.

 

[GeneralEngineData]

engine_type = 5

Engine.0 = 3.484, -13.573, 3.570

Engine.1 = 3.484, 13.573, 3.570

fuel_flow_scalar = 0.650

min_throttle_limit = -0.250000

max_contrail_temperature = -39.0

 

[propeller]

thrust_scalar = 1.0

propeller_type = 0

propeller_diameter = 11.981

propeller_blades = 4

propeller_moi = 320.000

beta_max = 45.000

beta_min = 11.500

min_gov_rpm = 27974.000

prop_tc = 0.004

gear_reduction_ratio = 24.700

fixed_pitch_beta = 0.000

low_speed_theory_limit = 80.000

prop_sync_available = 1

prop_deice_available = 1

prop_feathering_available = 1

prop_auto_feathering_available = 1

min_rpm_for_feather = 350.000

beta_feather = 79.3

power_absorbed_cf = 0.900

defeathering_accumulators_available = 0

prop_reverse_available = 1

minimum_on_ground_beta = 0.000

minimum_reverse_beta = -20.000

 

[TurbineEngineData]

fuel_flow_gain = 0.008

inlet_area = 1.200

rated_N2_rpm = 28950.000

static_thrust = 450.000

afterburner_available = 0

 

[turboprop_engine]

power_scalar = 1.000

maximum_torque = 11240.000

max_rpm_mechanical_efficiency_scalar = 1.000

idle_rpm_mechanical_efficiency_scalar = 1.000

max_rpm_friction_scalar = 1.000

idle_rpm_friction_scalar = 1.000

 

Use standard settings first. Then report back.

You have several incorrect settings in the .cfg file...

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I would try reducing propeller beta_min. I'll be interested to know what happens. :)

 

There are a number of errors in THAT .cfg. Relying on the one fix is erroneous... Get rid of the junk first, then lets have another look.

 

I cannot even tell what aircraft is simulated? Beechcraft?

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