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ML-347 Atlas Flying Boat

1,671 MarshallLewisAerospace  4.3 years ago

Updated version of the ML-347 Atlas.

Controls:
Standard flying controls.
VTOL down for flaps
AG1 enables water brakes
AG2 toggles landing lights
AG8 toggles navigation/running lights

To take off from water: set flaps at half, give about 2/3 nose up trim, optional AG2 lights, and full throttle. She starts to plane out of the water at around 140-150mph, and should unstick in this configuration at 180mph. She accelerates quickly once in the air, so be ready to reset your trim to neutral by 190mph or the nose will go up very quickly. I usually retract the flaps around 210mph, and after that you'll want to give some nose down trim since the horizontal stabilizer is set to give a lot of downforce to improve low speed handling. After that, flight is pretty normal, but you'll want to keep adding downforce as your speed climbs.

To land, throttle down to 45% thrust, and lower flaps down full. If you are coming in fast, use the air brakes as well. Trim the nose up as you show down, and when you are not too far above the water, and at about 170 mph, give full nose up trim. In this configuration she should lose speed gradually and settle down on the water for a gentle landing. Once on the water, cut the engine, activate AG1, and hit the brakes to scrub off speed in the water. Using the AG2 lights is optional, but recommended. A rudder is provided to give better turning on the water, but frankly the Atlas has a turning circle as large as the Wright Islands when on the water.

Since this is a pure flying boat based on the likes of the Boeing Clipper and Spruce Goose, the Atlas has no capability to operate on land. This is an updated version of an existing aircraft I have made, with some new details added. The windows are now shiny(!) and have a mirrored finish to them. The engines have exhaust in the form of VTOL nozzles and a reduced power engine, as well as a slightly smaller prop hub. Some extra hatches are on the fuselage, and a wire runs from the cockpit to the tail for the radio system. I've also modified the distribution of buoyancy to a more realistic state. The tail sinks a bit, and the hull sinks in to the water a bit rather than perpetually skimming like in earlier models. Hope you enjoy, and happy flying!

Spotlights

General Characteristics

  • Created On Mac
  • Wingspan 201.0ft (61.3m)
  • Length 125.7ft (38.3m)
  • Height 39.8ft (12.1m)
  • Empty Weight 107,961lbs (48,970kg)
  • Loaded Weight 192,742lbs (87,426kg)

Performance

  • Power/Weight Ratio 0.069
  • Horse Power/Weight Ratio 0.124
  • Wing Loading 42.8lbs/ft2 (209.2kg/m2)
  • Wing Area 4,498.7ft2 (417.9m2)
  • Drag Points 49863

Parts

  • Number of Parts 414
  • Control Surfaces 5
  • Performance Cost 1,618
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    Used by: frantic Edited video plane by frantic

    3.8 years ago
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    25.4k Mustang51

    This is also a lovely flying boat. I hope to see more builds like this from you!

    +1 4.3 years ago
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    @BurkeEnterprise Glad you approve of the update so much! Some of the changes I made definitely included some of your suggestions for the first one as well.

    +1 4.3 years ago
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    Damm dude, I remember flying the last version a while back and this... this is amazing!

    It’s kinda like a flying boat 747

    +1 4.3 years ago
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    2,192 jselbach

    Nice build! Love seaplanes.

    +1 4.3 years ago