// Savoia Marchetti SM.74 Flight Dynamics // version 1 // Manuele Villa November 2007 [fltsim.0] title=SM74 I-URBE sim=74 model=px panel= sound= texture=urbe kb_reference=SM74_check ui_manufacturer=Savoia Marchetti ui_type=SM.74 ui_variation='Ala Littoria'I-URBE atc_heavy=0 atc_id=I-URBE atc_airline=ALA atc_flight_number= atc_id_color=0000000000 visual_damage=0 description=Built during 1934 by the Societa Idrovolanti Alta Italia "Savoia, the SM.74 had accommodation for twenty-four passengers in one large cabin. It had wooden wings and welded steel tube fuselage covered with aluminium and painted canvas. Fitted initially with four 700 h.p. Piaggio "Stella" X engines received, during 1937, the 780 h.p. Alfa Romeo AR.126 RC ones. Its loaded weight was 31.000 lbs and the cruising speed 190 m.p.h.. The SM.74 was the first four-engined Italian airliner. Only three planes were built (I-URBE, I-ROMA, I-ALPE), and they served from 1936 with Ala Littoria; distinguished by comfort and luxury, these planes were fast, safe and sturdy. The SM.74s were used on the Rome-Paris route until 1938 and on the Rome-Tripoli route until 1940. After June 1940 the Royal Italian Air Force (Regia Aeronautica) incorporated all the civil aircrafts. The three SM.74s of 604° Transports sqdn. (based in Libya) were used during military operations in North Africa and also for the evacuation of the civilians towards the Sicily; carrying more than 5,000 kg of material they revealed themselves as the best Italian (operative) cargos.Created by Manuele Villa , November 2007. [fltsim.1] title=SM74 I-ROMA sim=74 model=126 panel= sound= texture=roma kb_reference=SM74_check ui_manufacturer=Savoia Marchetti ui_type=SM.74 ui_variation='Ala Littoria'I-ROMA atc_heavy=0 atc_id=I-ROMA atc_airline=ALA atc_flight_number= atc_id_color=0000000000 visual_damage=0 description=Built during 1934 by the Societa Idrovolanti Alta Italia "Savoia, the SM.74 had accommodation for twenty-four passengers in one large cabin. It had wooden wings and welded steel tube fuselage covered with aluminium and painted canvas. Fitted initially with four 700 h.p. Piaggio "Stella" X engines received, during 1937, the 780 h.p. Alfa Romeo AR.126 RC ones. Its loaded weight was 31.000 lbs and the cruising speed 190 m.p.h.. The SM.74 was the first four-engined Italian airliner. Only three planes were built (I-URBE, I-ROMA, I-ALPE), and they served from 1936 with Ala Littoria; distinguished by comfort and luxury, these planes were fast, safe and sturdy. The SM.74s were used on the Rome-Paris route until 1938 and on the Rome-Tripoli route until 1940. After June 1940 the Royal Italian Air Force (Regia Aeronautica) incorporated all the civil aircrafts. The three SM.74s of 604° Transports sqdn. (based in Libya) were used during military operations in North Africa and also for the evacuation of the civilians towards the Sicily; carrying more than 5,000 kg of material they revealed themselves as the best Italian (operative) cargos.Created by Manuele Villa , November 2007. [fltsim.2] title=SM74 604-9 sim=74 model=ra panel= sound= texture=604-9 kb_reference=SM74_check ui_manufacturer=Savoia Marchetti ui_type=SM.74 ui_variation='Regia Aeronautica'604-9 atc_heavy=0 atc_id=609-4 atc_airline=RA atc_flight_number= atc_id_color=0000000000 visual_damage=0 description=Built during 1934 by the Societa Idrovolanti Alta Italia "Savoia, the SM.74 had accommodation for twenty-four passengers in one large cabin. It had wooden wings and welded steel tube fuselage covered with aluminium and painted canvas. Fitted initially with four 700 h.p. Piaggio "Stella" X engines received, during 1937, the 780 h.p. Alfa Romeo AR.126 RC ones. Its loaded weight was 31.000 lbs and the cruising speed 190 m.p.h.. The SM.74 was the first four-engined Italian airliner. Only three planes were built (I-URBE, I-ROMA, I-ALPE), and they served from 1936 with Ala Littoria; distinguished by comfort and luxury, these planes were fast, safe and sturdy. The SM.74s were used on the Rome-Paris route until 1938 and on the Rome-Tripoli route until 1940. After June 1940 the Royal Italian Air Force (Regia Aeronautica) incorporated all the civil aircrafts. The three SM.74s of 604° Transports sqdn. (based in Libya) were used during military operations in North Africa and also for the evacuation of the civilians towards the Sicily; carrying more than 5,000 kg of material they revealed themselves as the best Italian (operative) cargos.Created by Manuele Villa , November 2007. [General] atc_type=SIAI atc_model=SM74 editable=1 performance="Maximum Speed\n186 mph 300 km/hr\n\nCruise Speed\n110-118 mph 180 km/hr\n\nEngine\n700-hp Piaggio PX-RC C\n\nPropeller\nThree-bladed, variable pitch\n\nMaximum Range\n2000 km\n\nFuel Capacity\n990 Imp.Gal. 1190 USG\n\nEmpty Weight\n20940 lb\n\nMaximum Gross Weight\n31085lb\n\nLength\n70 ft, 1 in 21.79 m\n\nWingspan\n97 ft, 5 in 29.68 m\n\nSeating\nUp to 24" [weight_and_balance] // ACM V2.3 max_gross_weight = 31085 empty_weight = 20940 reference_datum_position = 3.4, 0, 2 empty_weight_CG_position = 0, 0, -3 empty_weight_pitch_MOI = 127017 empty_weight_roll_MOI = 105809 empty_weight_yaw_MOI = 190293 empty_weight_coupled_MOI = 0 max_number_of_stations = 2 station_load.0 = 660, 11.25, 0, 0 station_load.1 = 3970, -2.04, 0, -5.26 [lights] //Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit, 5=landing light.0 = 3, 4.5, -46.73, 3.2, fx_SM74_navred light.1 = 3, 4.5, 46.73, 3.2, fx_SM74_navgre light.2 = 4, 14.03, 0.16, 0.15, fx_vclight light.3 = 3, -36.35, 0.07, 6.94, fx_SM74_navwhi light.4 = 5, 23.14, -0.45, -3.67, fx_SM74_landing light.5 = 5, 23.14, 0.61, -3.67, fx_SM74_landing [GeneralEngineData] //0=Piston, 1=Jet, 2=None, 3=Helo-Turbine, 4=Rocket, 5=Turboprop engine_type = 0 fuel_flow_scalar = 1.130 engine.0 = 9.91, -20.5, 1.30, engine.1 = 10.91, -9.69, 0.80, engine.2 = 10.91, 9.89, 0.80, engine.3 = 9.91, 20.60, 1.30, [effects] dirt = fx_tchdrt concrete = fx_sparks touchdown = fx_tchdwn_s, 1 [fuel] //Longitudinal (feet), Lateral (feet), Vertical (feet), Usable(gallons), Unusable (gallons) fuel_type = 1 number_of_tank_selectors = 2 LeftMain = 0, -6, 4, 297, 0 LeftAux = 0, -15, 4.1, 297, 0 RightMain = 0, 6, 4, 297, 0 RightAux = 0, 15, 4.1, 297, 0 electric_pump=0 [contact_points] static_pitch = 10.07 static_cg_height = 9.27 max_number_of_points = 7 point.0 = 1, -38.5057, 0, -5.7, 1600, 0, 1, 30, 0.5, 0.5, 0.595, 0, 0, 7, 0, 0 point.1 = 1, 4.3, -11, -12.8, 1600, 1, 2, 0, 0.6, 2.5, 0.756, 0, 0, 2, 0, 0 point.2 = 1, 4.3, 11, -12.8, 1600, 2, 2, 0, 0.6, 2.5, 0.752, 0, 0, 3, 0, 0 point.3 = 0, 0, -45, 1.4, 800, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0 point.4 = 0, 0, 45, 1.4, 800, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0 point.5 = 0, -50, 0, -3, 800, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0 point.6 = 0, 18, 0, -4.5, 800, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0 [keyboard_response] elevator = 200, 1000 aileron = 200, 1000 rudder = 200, 1000 [forcefeedback] gear_bump_nose_magnitude = 7000 gear_bump_nose_direction = 18000 gear_bump_nose_duration = 250000 gear_bump_left_magnitude = 9000 gear_bump_left_direction = 35500 gear_bump_left_duration = 250000 gear_bump_right_magnitude = 9000 gear_bump_right_direction = 500 gear_bump_right_duration = 250000 ground_bumps_magnitude1 = 7500 ground_bumps_angle1 = 8900 ground_bumps_intercept1 = 5 ground_bumps_slope1 = 0.48 ground_bumps_magnitude2 = 2300 ground_bumps_angle2 = 9100 ground_bumps_intercept2 = 0.075 ground_bumps_slope2 = 1 crash_magnitude1 = 10000 crash_direction1 = 1000 crash_magnitude2 = 10000 crash_direction2 = 9000 crash_period2 = 7500 crash_duration2 = 2500000 stick_shaker_magnitude = 8000 stick_shaker_direction = 0 stick_shaker_period = 111111 [airplane_geometry] //ACM_AREAW1// 0,0,0,5.1816,1.6425,1.6425,0.0573,4.9798,3.2850,3.2850 //ACM_AREAW2// 0.1146,4.7781,4.9274,4.9274,0.1720,4.5763,6.5700,6.5700,0.2293,4.3747 //ACM_AREAW3// 8.2124,8.2124,0.2867,4.1729,9.8549,9.8549,0.3440,3.9711,11.4975,11.4975 //ACM_AREAW4// 0.4013,3.7695,13.1400,13.1400,0.4587,3.5678,14.7826,14.7826,0.5162,3.3661 //ACM_AREAH1// 0,0,0,2.6414,0.4402,0.4402,0.1430,2.6524,0.8805,0.8805 //ACM_AREAH2// 0.2861,2.6635,1.3207,1.3207,0.4291,2.6744,1.7610,1.7610,0.5722,2.6854 //ACM_AREAH3// 2.2012,2.2012,0.7152,2.6963,2.6414,2.6414,0.8582,2.7074,3.0817,3.0817 //ACM_AREAH4// 1.0010,2.7183,3.5220,3.5220,1.1444,2.7293,3.9623,3.9623,1.2874,2.7402 //ACM_AREAV1// 0,0,0,2.4384,0.2709,0.2709,0.1897,2.4330,0.5418,0.5418 //ACM_AREAV2// 0.3794,2.4275,0.8126,0.8126,0.5691,2.4223,1.0836,1.0836,0.7588,2.4168 //ACM_AREAV3// 1.3545,1.3545,0.9484,2.4114,1.6253,1.6253,1.1382,2.4061,1.8961,1.8961 //ACM_AREAV4// 1.3279,2.4007,2.1672,2.1672,1.5176,2.3954,2.4384,2.4384,1.7072,2.3901 //ACM_CAREAW1// 7.8583,7.8583,3.2225,4.1187,8.3992,8.3992,3.1577,4.0953,9.0339,9.0339 //ACM_CAREAW2// 3.0929,3.9323,9.8549,9.8549,2.9349,3.8157,10.6764,10.6764,2.8698,3.6988 //ACM_CAREAW3// 11.4975,11.4975,2.7118,3.5826,12.4124,12.4124,2.5536,3.3726,13.7938,13.7938 //ACM_CAREAW4// 2.3018,3.0690,14.2418,14.2418,0.8356,2.8122,14.7826,14.7826,1.5650,2.0885 //ACM_CAREAH1// 0,0,1.7410,2.6414,0.4402,0.4402,1.7438,2.8587,0.8805,0.8805 //ACM_CAREAH2// 1.7467,2.8889,1.3207,1.3207,1.7496,2.8726,1.7610,1.7610,1.7992,2.9495 //ACM_CAREAH3// 2.2012,2.2012,1.8487,2.9328,2.8749,2.8749,1.8516,2.8698,3.1284,3.1284 //ACM_CAREAH4// 1.3408,2.9000,3.4751,3.4751,1.5305,2.8371,3.9623,3.9623,1.9074,2.5404 //ACM_CAREAV1// -0.3736,-0.3736,0.0489,2.6226,0.1773,0.1773,0.0518,2.6212,0.5885,0.5885 //ACM_CAREAV2// 0.3348,2.6203,0.9994,0.9994,0.6176,2.6189,1.3171,1.3171,0.9009,2.6177 //ACM_CAREAV3// 1.5880,1.5880,1.1373,2.6164,1.9055,1.9055,1.4670,2.5218,2.1296,2.1296 //ACM_CAREAV4// 1.7503,2.4739,2.2139,2.2139,1.9867,2.3789,2.2513,2.2513,2.1300,2.2376 wing_area = 1204 wing_span = 97 wing_root_chord = 17 wing_dihedral = 3 wing_incidence = 3 wing_twist = -1.0 oswald_efficiency_factor = 0.6 wing_winglets_flag = 0 wing_sweep = 2 wing_pos_apex_lon = 7 wing_pos_apex_vert = 0 htail_area = 178.0 htail_span = 26 htail_pos_lon = -28.5 htail_pos_vert = 0 htail_incidence = 0.0 htail_sweep = 18 vtail_area = 50.9 vtail_span = 8 vtail_sweep = 35 vtail_pos_lon = -30 vtail_pos_vert = -0.50 elevator_area = 95.5 aileron_area = 136.2 rudder_area = 24.22 elevator_up_limit = 15.0 elevator_down_limit = 15.0 aileron_up_limit = 20.0 aileron_down_limit = 20.0 rudder_limit = 30.0 elevator_trim_limit = 20.0 spoiler_limit = 0.0 aileron_to_spoileron_gain = 0 min_ailerons_for_spoilerons = 0 min_flaps_for_spoilerons = 0 spoilerons_available = 0 [electrical] max_battery_voltage = 24 generator_alternator_voltage = 25 max_generator_alternator_amps = 60 electric_always_available = 0 pitot_heat = 0, 15, 17 fuel_pump = 2, 5, 17 starter1 = 2, 20, 17 starter2 = 2, 20, 17 starter3 = 2, 20, 17 starter4 = 2, 20, 17 light_nav = 0, 5, 17 light_landing = 0, 5, 17 light_panel = 0, 5, 17 fuel_transfer_pump = 2, 5, 17 [flight_tuning] cruise_lift_scalar=1.0 parasite_drag_scalar=1.0 induced_drag_scalar=1.0 elevator_effectiveness=1.0 aileron_effectiveness=1.0 rudder_effectiveness=1.0 pitch_stability=1.0 roll_stability=1.0 yaw_stability=1.0 elevator_trim_effectiveness=1.1 aileron_trim_effectiveness=0.040 rudder_trim_effectiveness=0.50 p_factor_on_yaw = 0.5 torque_on_roll = 1.0 gyro_precession_on_yaw = 1.0 gyro_precession_on_pitch = 1.0 [Flaps.0] type=1 // 1 - tail, 2 - lead span-outboard=0.50 // 0.0 .. 1.0 extending-time=8 // seconds flaps-position.0=0, 0.0 // degrees, KIAS flaps-position.1=9, 0.0 // degrees, KIAS flaps-position.2=18, 0.0 // degrees, KIAS flaps-position.3=27, 0.0 // degrees, KIAS flaps-position.4=35, 0.0 // degrees, KIAS damaging-speed=130 // KIAS blowout-speed=150 lift_scalar = 1.2 drag_scalar = 0.3 pitch_scalar= -0.6 system_type = 2 [Reference Speeds] flaps_up_stall_speed=64.000000 full_flaps_stall_speed=58.000000 cruise_speed=147 max_indicated_speed=205.000000 [piston_engine] power_scalar=1.0 cylinder_displacement=181.844000 compression_ratio=6.400000 number_of_cylinders=9 max_rated_rpm=2300.000000 max_rated_hp=800.000000 fuel_metering_type=2 cooling_type=0 normalized_starter_torque=0.035000 turbocharged=1 max_design_mp=44.499999 min_design_mp=1.000000 critical_altitude=21000.000000 emergency_boost_type=0 emergency_boost_mp_offset=0.000000 emergency_boost_gain_offset=0.000000 fuel_air_auto_mixture=0 auto_ignition=0 max_rpm_mechanical_efficiency_scalar=1.000000 idle_rpm_mechanical_efficiency_scalar=1.000000 max_rpm_friction_scalar=1.000000 idle_rpm_friction_scalar=1.000000 [propeller] thrust_scalar=0.85 propeller_type=0 propeller_diameter=12 propeller_blades=3 propeller_moi=40 beta_max=60 beta_min=18 min_gov_rpm=1200 prop_tc=0.003 gear_reduction_ratio=1.8 // 1.85 fixed_pitch_beta=0.000000 low_speed_theory_limit=80.000000 prop_sync_available=0 prop_deice_available=1 prop_feathering_available=1 prop_auto_feathering_available=1 min_rpm_for_feather=1200.000000 beta_feather=12.000000 power_absorbed_cf=0.300000 defeathering_accumulators_available=0 prop_reverse_available=0 minimum_on_ground_beta=0.0 minimum_reverse_beta=0.0 [brakes] parking_brake = 1 //Parking brake available toe_brakes_scale = 0.4 //Brake scalar differential_braking_scale = 1.5 //Delta on the amount of brake when the rudder pedals deflected [hydraulic_system] normal_pressure = 0.0 //PSI [Views] eyepoint=17.3, -1.0, 4.3 [Radios] // Radio Type = availiable, standby frequency, has glide slope Audio.1=1 Com.1=1, 0 Nav.1=0, 0, 0 Adf.1=1 Transponder.1=0 Marker.1=0 [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=1,0 direction_indicator.1=2,0 [attitude_indicators] //Type: 0=None, 1=Vacuum Gyro, 2=Electric Gyro attitude_indicator.0 = 1 attitude_indicator.1 = 2 [turn_indicators] //Type: 0=None, 1=Electric Gyro, 2= Vacuum Gyro turn_indicator.0=2,0 [autopilot] autopilot_available=1 flight_director_available=0 pitch_takeoff_ga=0.0 default_vertical_speed=500.000000 autothrottle_available=0 direction_indicator=1 max_pitch=10.000000 max_pitch_acceleration=1.000000 max_pitch_velocity_lo_alt=2.000000 max_pitch_velocity_hi_alt=1.500000 max_pitch_velocity_lo_alt_breakpoint=20000.000000 max_pitch_velocity_hi_alt_breakpoint=28000.000000 max_bank=25.000000 max_bank_acceleration=1.800000 max_bank_velocity=3.000000 max_throttle_rate=0.100000 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 = 0.0 default_bank_mode=2 //Default to Heading Hold [stall_warning] type=1 [exits] number_of_exits = 2 exit_rate.0 = 0.4 ;Percent per second exit_rate.1 = 0.4 ;Percent per second [Views] eyepoint=17.3, -1.0, 4.3