Update! MSFS2020 - Grumman Goose G21A Redux II Improvement Mod - V.1.13.16.0



Before installing this enhancement mod, you need to load the plane.

General characteristics
  • Crew: 1-3
  • Capacity: 5-7
  • Length: 38 ft 6 in (38.5ft, 11.73 m)
  • Wingspan: 49 ft 0 in (14.94 m)
  • Height: 16 ft 2 in (4.93 m)
  • Wing area: 375 sq ft (34.8 m2)
  • Airfoil: root: NACA 23015 ; tip: NACA 23009
  • Empty weight: 5,425 lb (2,461 kg)
  • Gross weight: 3,636 lb (1,649 kg)
  • Max takeoff weight: 8,000 lb (3,629 kg)
  • Powerplant: 2 × Pratt & Whitney R-985-AN-6 Wasp Junior 9-cylinder air-cooled radial piston engines, 450 hp (340 kW) each
  • Propellers: 3-bladed variable-pitch propellers
Performance
  • Maximum speed: 201 mph (323 km/h, 175 kn) at 5,000 ft (1,524 m)
  • Cruise speed: 191 mph (307 km/h, 166 kn) at 5,000 ft (1,524 m)
  • Range: 640 mi (1,030 km, 560 nmi)
  • Service ceiling: 21,300 ft (6,500 m)
  • Rate of climb: 1,100 ft/min (5.6 m/s)
  • Wing loading: 21.3 lb/sq ft (104 kg/m2)
  • Power/mass: 0.11 hp/lb (0.18 kW/kg)

Flight model modifications version 1.12.13.5:

engine_driven_pump = 1 ; 0 ; 
fuel_dump_rate = 0.02 ; 
max_contrail_temperature = -39.724 ; 
If these parameters have no value, the engine will stop after a short timespan.

My standard set of changes for a "baseline":

[AIRPLANE_GEOMETRY]
wing_incidence = 0 ; const
oswald_efficiency_factor = 0.77 ; const
htail_incidence = 2 ; const

[FLIGHT_TUNING]
cruise_lift_scalar = 1 ; const
parasite_drag_scalar = 1 ; const
induced_drag_scalar = 1.2 ; 1.2 (sailplane, low power airplane) to 1.5 (piston, turboprop)
flap_induced_drag_scalar = 1.2 ; see induced_drag_scalar
pitch_stability = 0.04 ; const
roll_stability = 0.04 ; const
yaw_stability = 0.04 ; const

[AERODYNAMICS]
drag_coef_zero_lift = 0.0443 ; 0.01 (sailplane), 0.035 (GA plane), 0.05 (aerobatics plane)
compute_aero_center = 0 ; const
aero_center_lift = 0 ; const
lift_coef_at_drag_zero = 0.1 ; const
lift_coef_at_drag_zero_flaps = 0.1 ; const

engine.0 = 118, 0, 4.6 ; 3.0, -6.2, 4.6 ; (feet) longitudinal, lateral, vertical distance from reference datum
engine.1 = 118,  0, 4.6 ; 3.0,  6.2, 4.6 ; (feet) longitudinal, lateral, vertical distance from reference datum
thrustanglespitchheading.0 = 0, 3 ; 
thrustanglespitchheading.1 = 0, -3 ; 
The 3° ThrustAnglesPitchHeading.X.heading angle together with the Engine.X.longitudial of 118ft result in a distance of engine to center line of 6.2ft. But the engine is 118ft ahead of the airplane ...

cruise_speed = 166 ; 100.0 ; Knots True (KTAS)
thrust_scalar = 1.23 ; 1.0 ; Propeller thrust scalar
This parameter controls the maximum level flight air speed. I gave the airplane more power for 166 KIAS level flight at sea level.

fuel_flow_scalar = 1.36 ; 1.0 ; Fuel flow scalar
Set fuel consumption to 5h at 80% throttle.

empty_weight_cg_position = -3.1, 0,  2 ; -2.18, 0,  2 ; (feet) longitudinal, lateral, vertical distance from specified datum
CG at 30% MAC.

wing_pos_apex_lon = -2 ; 0.0 ; Feet, longitudinal distance from reference point, negative going aft
htail_pos_lon = -25.2 ; -30.8 ; Feet, longitudinal distance from reference point, negative going aft
htail_pos_vert = 5.5 ; 5.0 ; Feet, vertical distance from reference point, positive going up
vtail_pos_lon = -23.7 ; -19.3 ; Feet, longitudinal distance from reference point, negative going aft
vtail_pos_vert = 6 ; 3.4 ; Feet, vertical distance from reference point, positive going up
For better fit between flight model and Aircraft Editor, Debug, Sim Forces display.

toe_brakes_scale = 0.25 ; 1.0 ; Brake scalar
Because of front gear position the airplane can nose-over (flip over) easy after landing. For my comfort I reduced brake power.

4/Post a Comment/Comments

  1. There is such a file "msfsJSONgen.exe". How to use it during installation?

    ReplyDelete
  2. And why the location of the files in layout.json version ozx-aircraft-goose-hd-0.10.0 does not match the location of the layout.json files of this mod?

    ReplyDelete
  3. Is there an install freadme?

    ReplyDelete
  4. Cockpit views is damaged , but it is a very nice plane thanks for your effort

    ReplyDelete

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