Update! MSFS2020 - Grumman Goose G21A Redux II Improvement Mod - V.1.14.5.0



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.

8/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
  5. Doesn't work for me... :(
    None cockpit,
    Impossible to take off from the sea...

    ReplyDelete
  6. msfsJSONgen.exe is bugged
    When I execute it, I have a wrong path: "xxx\Community\\legacy-vcockpits-instruments\xxx"

    there is "\\" instead of "\"

    ReplyDelete
  7. How to install this Mod? It looks like we Copy content inside the Plane Folder to overwrite old files but what about the "Legacy-vcockpit-instruments" Folder? Are we to use the Run/Extract of the "msfsJSONgen instead and Create a separate Folder??? No clues!

    ReplyDelete
  8. I'd love to download the updated version but there are so many download buttons I'm scared to click any. Is there a better web site that is free of all the other links?

    ReplyDelete

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