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Aircraft yaws right when starting engines


WaistGunner

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Afternoon fellow simmers!

 

I have a strange set of circumstances that perhaps one of you has come across before and know the answer that may help me fix this issue. The aircraft is a 747-800 file: SSP748V4_GENX_N6067E that I downloaded here. The problem is when starting the engines, 1&2 engines start and the nose of the aircraft yaws to the right. When 3&4 engines start, that aircraft stops yawing to the right and stabilizes. I've look at the .air file and cfg files. There doesn't seem to be any anomalies in either file.

airfile: 747-400-RR-RB-211-524HT.air and typical posky cfg file.

 

If anyone can help me solve this, I would appreciate it!

 

Frank Savage

Brigadier General Frank Savage

918th Bomb Group "Hard Luck Group"

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same results, only worse!

 

So here is the cfg file:

 

[fltsim.0]

title=Boeing 747-800 Boeing Sunrize Livery

sim=747-400-RR-RB-211-524HT

model=

panel=

sound=

texture=n6067e

kb_checklists=boeing747_check

kb_reference=boeing747_ref

atc_airline=Boeing

atc_flight_number=008

atc_parking_types=GATE, RAMP

atc_parking_codes=BOE

ui_typerole=Commercial Airliner

ui_manufacturer=AAC

ui_type=11 Boeing 747-800

ui_variation=Boeing First Flight Livery

visual_damage=1

atc_heavy=1

atc_id=

 

description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com

 

[fltsim.1]

title=Boeing 747-800 Air Force One

sim=747-400-RR-RB-211-524HT

model=

panel=

sound=

texture=AF1

kb_checklists=boeing747_check

kb_reference=boeing747_ref

atc_airline=Boeing

atc_flight_number=008

atc_parking_types=GATE, RAMP

atc_parking_codes=BOE

ui_typerole=Commercial Airliner

ui_manufacturer=AAC

ui_type=11 Boeing 747-800

ui_variation=Air Force One

visual_damage=1

atc_heavy=1

atc_id=

 

description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com

 

[fltsim.2]

title=Boeing 747-800 BBJ

sim=747-400-RR-RB-211-524HT

model=

panel=

sound=

texture=bbj

kb_checklists=boeing747_check

kb_reference=boeing747_ref

atc_airline=Boeing

atc_flight_number=008

atc_parking_types=GATE, RAMP

atc_parking_codes=BOE

ui_typerole=Commercial Airliner

ui_manufacturer=AAC

ui_type=11 Boeing 747-800

ui_variation=Boeing Business Jet

visual_damage=1

atc_heavy=1

atc_id=

 

description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com

 

[fltsim.3]

title=Boeing 747-800 Blue & White Roll Out

sim=747-400-RR-RB-211-524HT

model=

panel=

sound=

texture=BW

kb_checklists=boeing747_check

kb_reference=boeing747_ref

atc_airline=Boeing

atc_flight_number=008

atc_parking_types=GATE, RAMP

atc_parking_codes=BOE

ui_typerole=Commercial Airliner

ui_manufacturer=AAC

ui_type=11 Boeing 747-800

ui_variation=Boeing Blue & White Roll Out

visual_damage=1

atc_heavy=1

atc_id=

 

description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com

 

[fltsim.4]

title=Boeing 747-800 Presidential Support

sim=747-400-RR-RB-211-524HT

model=PS

panel=

sound=

texture=AABNCP

kb_checklists=boeing747_check

kb_reference=boeing747_ref

atc_airline=Boeing

atc_flight_number=008

atc_parking_types=GATE, RAMP

atc_parking_codes=BOE

ui_typerole=Commercial Airliner

ui_manufacturer=AAC

ui_type=11 Boeing 747-800

ui_variation=Presidential Support

visual_damage=1

atc_heavy=1

atc_id=

 

description=Project Opensky - 747-400BCF\nVersion 2006.9.7-FSX\n\nEngine Type GE CF6-80C2B1\n\n747-400 Commercial Version \n\nModel Designer\n Hiroshi Igami\n\nFlight Dynamics Designers\n Warren C. Daniel\n Brandon D. Henry\n\nMaster Texture Designer\n Corey Ford\n\nTest Pilots\n Project Opensky Members\n\nMaximun Range: 4100 nm\n\nFor proper operation: See B747 manual at: \n http://www.project-opensky.com

 

 

[General]

performance=See boeing.com

atc_type=BOEING

atc_model=B747

editable=0

 

[pitot_static]

vertical_speed_time_constant=10 //Increasing this value will cause a more instantaneous reaction in the VSI

 

[WEIGHT_AND_BALANCE]

empty_weight= 394660.000

max_gross_weight= 877000.000

 

reference_datum_position = 97.0, 0, 0

empty_weight_CG_position = -97.0, 0, 0

 

max_number_of_stations = 8

 

// New FS2004 Numbers

// Max Structural Payload Per Boeing - 148,716 lbs

// Max Structural Payload Opensky - 148,716 lbs

 

// Actual Total PAX - 72,800 lbs

station_load.0 = "5600, -20.0, 0.0, 0.0, 1st Class Main Dk (21 pax)" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)

station_load.1 = "5950, -70.0, 0.0, 0.0, Bus Class Main Dk (35 pax)" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)

station_load.2 = "7350, -50.0, 0.0, 20.00, Bus Class Upper Dk (42 pax)" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)

station_load.3 = "53900, -107.0, 0.0, 0.0, Econ Class Main Dk (322 pax)" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)

 

// Total Opensky Cargo - 33,500 lbs

station_load.4 = "15750, -40.0, 0.0, 0.0, Lwr Dk Cgo Fwd" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)

station_load.5 = "15750, -150.0, 0.0, 0.0, Lwr Dk Cgo Aft" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)

station_load.6 = "2000, -170.0, 0.0, 0.0, Lwr Dk Cgo Bulk" //Weight (lbs), longitudinal, lateral, vertical positions from datum (feet)

 

// Moments of Inertia

empty_weight_roll_MOI= 37018662.500

empty_weight_pitch_MOI= 46713121.500

empty_weight_yaw_MOI= 26310700.000

empty_weight_coupled_MOI= 0.000

 

[fuel]

Center1 = -97.000, 0.0, -4.0, 17153.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)

Center2 = -290.500, 0.0, 6.0, 1775.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)

LeftMain = -102.000, -35.0, -4.0, 12538.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)

LeftAux = -108.500, -52.0, -3.0, 5761.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)

RightMain = -102.000, 35.0, -4.0, 12538.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)

RightAux = -108.500, 52.0, -3.0, 5761.0, 3.0 //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons)

fuel_type = 2 //Fuel type: 1 = Avgas, 2 = JetA

number_of_tank_selectors = 1

electric_pump=1

 

[airplane_geometry]

wing_area= 5650.000

wing_span= 211.000

wing_root_chord= 23.000

wing_dihedral= 6.998

wing_incidence= 2.000

wing_twist= -0.994

oswald_efficiency_factor= 0.830

wing_winglets_flag= 1

wing_sweep= 37.500

wing_pos_apex_lon= -55.100

wing_pos_apex_vert= 0.000

htail_area= 1470.000

htail_span= 72.750

htail_pos_lon= -213.000

htail_pos_vert= 10.000

htail_incidence= 0.000

htail_sweep= 37.500

vtail_area= 1060.000

vtail_span= 37.121

vtail_sweep= 45.000

vtail_pos_lon= -200.500

vtail_pos_vert= 20.083

elevator_area= 326.800

aileron_area= 650.000

rudder_area= 229.900

elevator_up_limit= 24.000

elevator_down_limit= 18.000

aileron_up_limit= 20.000

aileron_down_limit= 20.000

rudder_limit= 30.000

elevator_trim_limit= 24.000

spoiler_limit= 45.000

spoilerons_available= 1.0

aileron_to_spoileron_gain= 0.0

min_ailerons_for_spoilerons= 0.0

min_flaps_for_spoilerons= 0.0

 

[Reference Speeds]

flaps_up_stall_speed = 150.0 //Knots True (KTAS)

full_flaps_stall_speed = 126.0 //Knots True (KTAS)

cruise_speed = 475.0 //Knots True (KTAS)

max_indicated_speed=500.000000

max_mach=0.920000

 

[flaps.0]

type = 1 // 1 - tail, 2 - lead

span-outboard = 0.8 // 0.0 .. 1.0

extending-time = 25 // seconds

flaps-position.0 = 0 // degrees

flaps-position.1 = 5 // degrees

flaps-position.2 = 10 // degrees

flaps-position.3 = 15 // degrees

flaps-position.4 = 25 // degrees

flaps-position.5 = 35 // degrees

flaps-position.6 = 45 // degrees

damaging-speed = 200 // KIAS

blowout-speed = 250 // KIAS

lift_scalar = 0.28

drag_scalar = 0.40

pitch_scalar= 0.45

system_type = 1 //Hydraulic

 

[flaps.1]

type = 1 // 1 - tail, 2 - lead

span-outboard = 0.2 // 0.0 .. 1.0

extending-time = 25 // seconds

flaps-position.0 = 0 // degrees

flaps-position.1 = 5 // degrees

flaps-position.2 = 10 // degrees

flaps-position.3 = 15 // degrees

flaps-position.4 = 25 // degrees

flaps-position.5 = 35 // degrees

flaps-position.6 = 45 // degrees

damaging-speed = 200 // KIAS

blowout-speed = 250 // KIAS

lift_scalar = 0.28

drag_scalar = 0.40

pitch_scalar= 0.45

system_type = 1 //Hydraulic

 

[flaps.2]

type = 2 // 1 - tail, 2 - lead

span-outboard = 0.8 // 0.0 .. 1.0

extending-time = 12 // seconds

flaps-position.0 = 0 // degrees

flaps-position.1 = 5.0 // degrees

flaps-position.2 = 10.0 // degrees

flaps-position.3 = 15.0 // degrees

flaps-position.4 = 20.0 // degrees

flaps-position.5 = 25.0 // degrees

flaps-position.6 = 25.0 // degrees

damaging-speed = 250 // KIAS

blowout-speed = 300 // KIAS

lift_scalar = 0.28

drag_scalar = 0.40

pitch_scalar= 0.45

system_type = 1 //Hydraulic

 

[flaps.3]

type = 2 // 1 - tail, 2 - lead

span-outboard = 0.5 // 0.0 .. 1.0

extending-time = 12 // seconds

flaps-position.0 = 0 // degrees

flaps-position.1 = 5.0 // degrees

flaps-position.2 = 10.0 // degrees

flaps-position.3 = 15.0 // degrees

flaps-position.4 = 20.0 // degrees

flaps-position.5 = 25.0 // degrees

flaps-position.6 = 25.0 // degrees

damaging-speed = 250 // KIAS

blowout-speed = 300 // KIAS

lift_scalar = 0.28

drag_scalar = 0.40

pitch_scalar= 0.45

system_type = 1 //Hydraulic

 

[flight_tuning]

cruise_lift_scalar = 2.2 //1.8

parasite_drag_scalar = 1.0

induced_drag_scalar = 1.0

elevator_effectiveness = 1.0

aileron_effectiveness = 1.5

rudder_effectiveness = 1.5

pitch_stability = 2.0

roll_stability = 2.0

yaw_stability = 2.0

elevator_trim_effectiveness = 1.0

aileron_trim_effectiveness = 0.00

rudder_trim_effectiveness = 0.00

 

 

[GeneralEngineData]

engine_type= 1

Engine.0= -107.600, -69.500, 0.000

Engine.1= -78.110, -39.167, -7.000

Engine.2= -78.110, 39.167, -7.000

Engine.3= -107.600, 69.500, 0.000

fuel_flow_scalar= 0.9676

min_throttle_limit=-0.319946

 

[TurbineEngineData]

bypass_ratio=5.800000

fuel_flow_gain= 0.001

inlet_area= 55.00 //40.58

rated_N2_rpm= 29992.000

static_thrust= 57000.000 ////59350.000

afterburner_available= 0

reverser_available= 1

 

[jet_engine]

thrust_scalar = 1.0

 

[autopilot]

autopilot_available=1

flight_director_available=1

default_vertical_speed=1800.000000

autothrottle_available=1

autothrottle_arming_required=1

autothrottle_takeoff_ga=1

autothrottle_max_rpm=105.000000

pitch_takeoff_ga=8.000000

use_no_default_pitch = 1 // 0 = Default to current pitch mode, 1 = No default pitch mode.

use_no_default_bank = 1 // 0 = Default to Wing Leveler mode, 1 = No default bank mode.

default_pitch_mode=0

default_bank_mode=0

max_pitch=10.000000

max_pitch_acceleration=1.000000

max_pitch_velocity_lo_alt=2.000000

max_pitch_velocity_hi_alt=0.300000

max_pitch_velocity_lo_alt_breakpoint= 7000.000000

max_pitch_velocity_hi_alt_breakpoint=24000.000000

max_bank=20.000000

max_bank_acceleration=1.800000

max_bank_velocity=3.000000

max_throttle_rate=0.03000

nav_proportional_control=9.000000

nav_integrator_control=0.250000

nav_derivative_control=0.000000

nav_integrator_boundary=2.500000

nav_derivative_boundary=0.000000

gs_proportional_control=9.520000

gs_integrator_control=0.260000

gs_derivative_control=0.000000

gs_integrator_boundary=0.700000

gs_derivative_boundary=0.000000

yaw_damper_gain=1.000000

 

[contact_points]

 

//0 Class

//1 Longitudinal Position (feet)

//2 Lateral Position (feet)

//3 Vertical Position (feet)

//4 Impact Damage Threshold (Feet Per Minute)

//5 Brake Map (0=None, 1=Left, 2=Right)

//6 Wheel Radius (feet)

//7 Steer Angle (degrees)

//8 Static Compression (feet) (0 if rigid)

//9 Max/Static Compression Ratio

//10 Damping Ratio (0=Undamped, 1=Critically Damped)

//11 Extension Time (seconds)

//12 Retraction Time (seconds)

//13 Sound Type

//14 Airspeed limit for retraction (KIAS)

//15 Airspeed that gear gets damage at (KIAS)

 

point.0 = 1.000, -2.333, 0.000, -14.33, 5181.102, 0.000, 2.042, 90.000, 0.660, 0.650, 0.880, 11.000, 11.000, 0.000, 240.000, 280.000 // Nose Gear

point.1 = 1.000, -110.583, -6.350, -15.403, 3574.803, 1.000, 1.917, 0.000, 1.620, 1.150, 0.841, 12.900, 14.900, 2.000, 240.000, 280.000 // Main Center Gear - Left

point.2 = 1.000, -110.583, 6.350, -15.403, 3574.803, 2.000, 1.917, 0.000, 1.620, 1.150, 0.841, 13.100, 15.400, 3.000, 240.000, 280.000 // Main Center Gear - Right

point.3 = 1.000, -102.083, -18.000, -15.403, 3574.803, 1.000, 1.917, 0.000, 1.620, 1.150, 0.841, 12.900, 14.900, 2.000, 240.000, 280.000 // Main Wing Gear - Left

point.4 = 1.000, -102.083, 18.000, -15.403, 3574.803, 2.000, 1.917, 0.000, 1.620, 1.150, 0.841, 13.100, 15.400, 3.000, 240.000, 280.000 // Main Wing Gear - Right

point.5 = 2.000, -146.000, -102.900, 7.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 5.000, 0.000, 0.000

point.6 = 2.000, -146.000, 102.900, 7.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 6.000, 0.000, 0.000

point.7 = 2.000, -189.667, 0.000, -2.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000

point.8 = 2.000, -9.167, 0.000, -5.750, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4.000, 0.000, 0.000

point.9 = 2.000, -229.667, 0.000, 55.500, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 8.000, 0.000, 0.000

point.10= 2.000, -106.400, -69.500, -5.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000

point.11= 2.000, -76.300, -39.167, -9.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000

point.12= 2.000, -76.300, 39.167, -9.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000

point.13= 2.000, -106.400, 69.500, -5.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9.000, 0.000, 0.000

point.14= 2.000, 0.000, 0.000, 0.000, 787.402, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4.000, 0.000, 0.000

 

static_pitch= -2.0000 //1.500

static_cg_height= 14.500

gear_system_type=0

 

[TailHook] // For opening cargo door.

tailhook_length=1 ;(feet)

tailhook_position = 0.0, 0.0, 0.0 ;(feet) longitudinal, lateral, vertical positions from datum

 

[folding_wings] // For opening main deck cargo door.

wing_fold_system_type = 4 ;0=None

fold_rates = 0.05,0.05 ;Percent per second

cable_force_adjust = 1.0

 

[Views]

eyepoint=-14.000, -2.000, 14.800 // Longitude, Latitude and Vertical position from Reference Point, (FEET)

 

[electrical]

// ;BusType, MaxAmpLoad, MinVoltage BusTypes:0=MainBus,1=AvionicsBus,2=BatteryBus,3=HotBatteryBus,4-7=Generator/AlternatorBus(1-4)

flap_motor = 1, 0 , 1.0

gear_motor = 0, 5 , 17.0

avionics_bus = 0, 0 , 1.0

avionics = 1, 5 , 17.0

pitot_heat = 0, 0 , 1.0

additional_system = 0, 0 , 1.0

marker_beacon = 1, 2 , 17.0

gear_warning = 7, 0 , 99.0

gear_motor = 4, 0 , 1.0

fuel_pump = 0, 0 , 1.0

fuel_transfer_pump = 0, 0 , 1.0

starter1 = 0, 20, 17.0

starter2 = 0, 0 , 1.0

light_nav = 0, 0 , 1.0

light_beacon = 0, 0 , 1.0

light_landing = 0, 0 , 1.0

light_taxi = 0, 0 , 1.0

light_strobe = 0, 0 , 1.0

light_panel = 0, 7 , 99.0

light_recognition = 0, 0 , 1.0

light_wing = 0, 0 , 1.0

marker_beacon = 0, 0 , 1.0

standby_vacuum = 0, 0 , 1.0

auto_brakes = 0, 0 , 1.0

hydraulic_pump = 0, 0 , 1.0

propeller_device = 0, 0 , 1.0

 

 

[Radios]

// Radio Type = availiable, standby frequency, has glide slope

Audio.1 = 1

Com.1 = 1, 1

Com.2 = 1, 1

Nav.1 = 1, 1, 1

Nav.2 = 1, 1, 0

Adf.1 = 1

Transponder.1 = 1

Marker.1 = 1

 

[direction_indicators]

//1 Type: 0=None, 1=Vacuum Gyro, 2=Electric Gyro, 3=Electro-Mag Slaved Compass, 4=Slaved to another

//2 Indicator number of slaving indicator if Type = 4

direction_indicator.0=3,0

 

 

[exits]

number_of_exits = 4

exit.0 = 0.10, -54.00, -9.0, 0.0, 0 //Main Pax Door, L1 Door, Main level - Reserved for Cargo models

exit.1 = 0.12, -54.00, 7.0, -7.0, 1 //Fwd Lower Right Cargo Door

exit.2 = 0.10, -72.00, -9.0, 0.0, 0 //Main Pax Door, L2 Door, Main level

exit.3 = 0.12, -167.00, 7.0, 7.0 1 //Lower Air Stair - Reserved for VC-25A

 

[EFFECTS]

wake=fx_wake

water=fx_spray

dirt=fx_tchdrt

concrete=Opensky_sparks, 1

touchdown=fx_tchdwn, 1

 

[sMOKESYSTEM]

//Aileron tip vortecies

smoke.0=0, -127.167, -86.167, Opensky_vortex

smoke.1=0, -127.167, 86.167, Opensky_vortex

//Wing condensation

smoke.2=0, -105.917, -39.167, Opensky_conden

smoke.3=0, -105.917, 39.167, Opensky_conden

 

 

[LIGHTS]

//Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit, 5=landing 6=taxi, 7=recognition, 8=wing, 9=logo

//light.0 = 3, -153.47, -110.96, 9.03, fx_shockwave_navred.fx ,

//light.1 = 3, -153.47, 110.96, 9.03, fx_shockwave_navgre.fx ,

//light.2 = 2, -224.700, 0.000, 11.000, fx_shockwave_strobe ,

//light.3 = 3, -13.850, 0.000, 14.850, fx_vclighth ,

//light.4 = 9, -208.500, -4.500, 43.750, Opensky_wing_light , //

//light.5 = 9, -208.500, 4.500, 43.750, Opensky_wing_light , //

light.6 = 1, -35.100, 0.600, 19.100, fx_beacon_AS.fx ,

light.7 = 1, -83.500, 0.600, -7.080, fx_beacon_AS.fx,

//light.8 = 2, -153.47, -110.96, 9.03, fx_shockwave_strobe ,

//light.9 = 2, -153.47, 110.96, 9.03, fx_shockwave_strobe ,

 

[vacuum_system]

max_pressure=5.150000

vacuum_type=2

electric_backup_pressure=0.000000

engine_map=0,0,0,0

 

 

[pneumatic_system]

max_pressure=18.000000

bleed_air_scalar=1.000000

structural_deice_type=0

 

 

[deice_system]

structural_deice_type=1 //0 = None, 1 = Heated Leading Edge, 2 = Bleed Air Boots, 3 = Eng Pump Boots

 

 

[brakes]

parking_brake = 1 // Parking brake available

toe_brakes_scale = 0.6 //Brake scalar

 

[stall_warning]

type=2

stick_shaker=1

 

 

[gear_warning_system]

gear_warning_available=0

pct_throttle_limit=0.099976

flap_limit_power=25.496622

flap_limit_idle=5.042029

 

 

[hydraulic_system]

electric_pumps=0

engine_map=1,1,1,1

normal_pressure=3000.000000

 

 

[attitude_indicators]

attitude_indicator.0=1

 

 

[turn_indicators]

turn_indicator.0=1,0

Brigadier General Frank Savage

918th Bomb Group "Hard Luck Group"

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Try to load front more and/or increase overall weight. Check CG if not too far back.

Also your [flight_tuning] cruise_lift_scalar = 2.2 seems too high, try to lower it.

If the nose comes up too fast during take-off rotation, these could be the issues.

 

Maybe you can also lower the static_thrust in [TurbineEngineData]

 

Good luck

Edited by beroun

Peter Bendl

ex. British Airways

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29992 is the FS default rated rpm for all jets - jet engines idle at around 16-17,000 rpm.

The brake scalar seems low at 60% - toe_brakes_scale = 0.6

Try increasing this to 80% - toe_brakes_scale = 0.8

Tim Wright "The older I get, the better I was..."

Xbox Series X, Asus Prime H510M-K, Intel Core i5-11400F 4.40GHz, 16Gb DDR4 3200, 2TB WD Black NVME SSD, 1TB Samsung SATA SSD

NVidia RTX3060 Ti 8Gb, Logitech Flight Yoke System, CH Pro Pedals, Acer K272HL 27", Windows 11 Home x64

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Well Gentlemen,

 

I added some weight to the aircraft, moved to CG forward by moving the fuel forward just a little. Then I had to adjust the static height and cg height just a hair. Reduced thrust by a small amount and increased the brake scale to 0.85. I also decreased N2 just a small amount and Eureka! the nose is now stationary on startup.

 

Listen, I appreciate everyone's help. You made a huge difference to me!

 

Thanks!

 

Frank

Brigadier General Frank Savage

918th Bomb Group "Hard Luck Group"

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