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Semedian Beribus CAC542-100LR "Sea Otter"

31.2k SemedianIndustries  3.2 years ago




I just thought of fusing a Beriev Be-200 with an Airbus A340 and this neat thing came out. Another addition to my list of aircraft that have everything that wouldn't work in real life for economic reasons: a multi-engine amphibious airliner. Could land anywhere but airlines wouldn't want it.

A huge thanks to @Kimfri for helping with the screenshots





INSTRUCTIONS

AG1 - Toggle Clearance Lights
AG2 - Toggle Navigation Lights
AG3+VTOL UP - Enable Flaps Configuration
  • 75-100% - 10º
  • 50-75% - 20º
  • 0-50% - 40º
AG4+Trim - Enable Pitch and Climb Rate Autopilot
AG5+Roll - Enable Roll and Bank Angle Autopilot
AG6 - Enable Autothrottle
  • 0-20% - Taxi Power - GS 0-20kts
  • 21-100% - Flight Power

    • Below FL100 - TAS 130-250kts
    • Above FL100 - TAS 130-555kts
VTOL Down - Speedbrake



START-UP PROCEDURE

  • Clearance Lights on

PRE-FLIGHT TAXI PROCEDURE

  • AG3 active
  • VTOL fully up
  • Taxi to runway
  • Navigation Lights on

RUNWAY TAKE-OFF PROCEDURE

  • VR at 140kts
  • Gear up
  • AG3 off

WATER TAKE-OFF PROCEDURE

  • Gear up
  • VR at 160kts
  • AG3 off

LANDING PROCEDURE

  • AG3 active
  • Center VTOL
  • Approach at 120kts (+15kts if fully loaded)

AFTER-FLIGHT TAXI PROCEDURE

  • AG3 deactivated
  • Navigation Lights off
  • After parking, Clearance Lights off.

For reference

Spotlights

General Characteristics

  • Created On Windows
  • Wingspan 175.6ft (53.5m)
  • Length 185.4ft (56.5m)
  • Height 43.0ft (13.1m)
  • Empty Weight 177,284lbs (80,415kg)
  • Loaded Weight 285,851lbs (129,660kg)

Performance

  • Power/Weight Ratio 0.943
  • Wing Loading 10.7lbs/ft2 (52.3kg/m2)
  • Wing Area 26,695.5ft2 (2,480.1m2)
  • Drag Points 15695

Parts

  • Number of Parts 617
  • Control Surfaces 0
  • Performance Cost 2,293
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  • Profile image
    1,489 demoman9

    @SemedianIndustries Oh? Well im looking forward too it 👍

    3.1 years ago
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    @kimfri the Japanese server just has horrible ping, take this plane and return to the American one

    +1 3.1 years ago
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    @demoman9 btw, you've inspired my next build

    3.1 years ago
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    @hoontown thanks my man

    3.2 years ago
  • Profile image
    1,489 demoman9

    @SemedianIndustries
    For someone with a 21k upvote score too upvote my simple 747-500 proto engine creation it draws my attention. This massive thing barely runs on my phone XD but its amazing. Needs more weight in the rear or less mass up front though. Constantly wants too nosedive.

    3.2 years ago
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    @demoman9 cheers mate

    3.2 years ago
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    13.8k vonhubert

    @SemedianIndustries Hm. Actually they all do not hold altitude too well, i understood after carefully testing most variants...

    3.2 years ago
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    @vonhubert can you tag me in an unlisted build?

    3.2 years ago
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    13.8k vonhubert

    @SemedianIndustries
    Well, so far nothing. I've tried 2 variants:
    1) (Activate4=1)?clamp(pow((270-IAS)/270,0.5)*(atan((rate(Altitude)-smooth(Trim,0.5)*38)/5)/90+atan(-PitchRate/5)/90),-1,1):(-Trim*0.5)

    2) (Activate4=1)?clamp(pow((270-IAS)/270,2)*(atan((rate(Altitude)-smooth(Trim,0.5)*38)/5)/90+atan(-PitchRate/5)/90),-1,1):(-Trim*0.5)

    Both made it work much worse( the plane that did held altitude at AG4+ Trim=0 stopped that...

    3.2 years ago
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    13.8k vonhubert

    @SemedianIndustries thanks, i'll try and report the result

    +1 3.2 years ago
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    @vonhubert like, the faster you go, i'd want it to become less and less sensitive, so you do
    (your function)*pow((MaxSpeed-Speed)/MaxSpeed,0.5 or 1 or 2)

    3.2 years ago
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    13.8k vonhubert

    @SemedianIndustries any advise how to add that? I thing something connected to the speed is more realistic...

    3.2 years ago
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    @vonhubert each program must have speed or the center thrust in consideration in consideration.

    3.2 years ago
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    13.8k vonhubert

    @SemedianIndustries Well, i was trying to use your code for automatic trim and roll controll, i basically changed pitch input for trim input in your code:

    (Activate4=1)?clamp(atan((rate(Altitude)-Trim*20.32)/5)/90+atan(-PitchRate/5)/90,-1,1):(-Trim*0.7)

    So when AG4 is active and trim = 0 they should fly more or less level and hold altitude change rate = 0 or close.
    but cant find the reason why with pretty much the same code 2 planes (for example this one !tu-104d-3 ) when trim=0 hold altitude change rate pretty close to zero (between -0.2 an -0.2 m/s) while 2 other ones (!Tu-114) cant hold altitude change rate near 0 - this one usually holds +2m/s when accelerating and -2m/s when decelerating at least a bit, and even when more or less stable - at best deviates from 0 for at least 0.8 m/s.

    Any ideas how to fix that?

    3.2 years ago
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    @13321892812 thanks m8

    3.2 years ago
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    @Sgtk thancc

    +1 3.2 years ago
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    @vonhubert you may copy the ones in this aircraft if you wish

    3.2 years ago
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    13.8k vonhubert

    @SemedianIndustries well, i think i found a walkaround using vanilla airbrakes and smooth function so they don't pop up instantly. They do not pitch up an airplane (though it is not very realistic, real wing mounted spoilers/airbrakes do pitch up the plane, but on most planes it is compensated automatically

    3.2 years ago
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    @MAHADI thanks man

    3.2 years ago
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    @vonhubert it doesn't fit all but it seems you're missing some multiplication signs

    3.2 years ago
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    13.8k vonhubert

    @SemedianIndustries Like that?
    (Activate5=1)?((Pitch=0)?((PitchAngle>0)?(sqrt(rate(PitchAngle)0.1)):(-sqrt(rate(-PitchAngle)0.1))):0):0

    Apart from the ineffective code, i've just understood that the main problem is that i've trying to use that code to compensate the spoilers deployment at AG5. When i activate ag5 - spoilers (not vanila airbrakes but small wing pieces) deploy 30degrees up and that makes the plane pitch up. Code allowed the plane to at least stay at stable pitch angle after pitch up, but when AG5 is deactivated, plane pitches down violently, and spoilers take some time to get down, but any code stops working immediately making the pitch down even more violent.

    3.2 years ago
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    3,562 RPC3503

    @SemedianIndustries No problem, Mate!

    3.2 years ago
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    28.3k goboygo1

    Sure thing! I love original airplane designs.

    3.2 years ago
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    @goboygo1 thx man

    3.2 years ago
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    @vonhubert would you please write that function again but
    using code quotes this time?

    3.2 years ago
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