Eurocopter HH-65 Dolphin (AS365 Dauphin) [USCG]

by   4,009 LusKa  12 days ago

The Eurocopter HH-65 Dolphin is a twin engine single rotor helicopter operated mainly by the USCG ( United States Coast Guard ).It was builded as a variant of the french AS365 Dauphin

A HH-65 from USCG making a rescue

The SA366 G1 Dauphin version was selected by the United States Coast Guard in 1979 as its new short range recovery (SRR) air-sea rescue helicopter, replacing the Sikorsky HH-52A Sea Guard. In total 99 helicopters, optimised for the USCG's search and rescue role tasks and given the designation HH-65A Dolphin, were acquired. Unlike the HH-52, the HH-65A is not able to perform water landings.The HH-65 normally carries a crew of four: Pilot, Copilot, Flight Mechanic and Rescue Swimmer.

Taking off from USCG HQ

The HH-65 Dolphin is used for homeland security patrols, cargo, drug interdiction, ice breaking, military readiness, pollution control, and search and rescue missions. The HH-65 is known for its Fenestron tail rotor and its autopilot capabilities, which can complete an unaided approach to the water and bring the aircraft into a stable 50 ft (15 m) hover, or automatically fly search patterns, an ability which allows the crew to engage in other tasks.

Going to rescue in the sea

•ORIGIN: France/U.S
•MANUFACTURER: Aérospatiale Helicopter Corporation ( american Eurocopter )
•FIRST FLIGHT: 1980
•DEVELOPED FROM: AS365 Dauphin

WHY I BUILDED THIS

I decided to build this after i saw a helicopter that was builded and posted in the site.After some search,i discovered that this helicopter design was not explored widely,and i was searching something different,so i thought that i should try.

At the beggining,was hard to do it,because the tail was circular,and i didn't knew how to do.After some work and frustration,i finaly did a base model.His performance is one of the best advantages.Altough it has an giroscope to stabilize,it handles very good in air.It reaches the maximum speed of 190 mph with aditional propulsion,and 140/150 mph with normal propulsion.It has a tendency to yaw in flight,but its nothing that will disturb your experience.

EXPECIFICATIONS

•AG-1: Searchlight
•AG-2: White and yellow lights
•AG-3: Green and red lights
•AG-8: RCN deactivation

How to fly

•Minimum take off porcentage: 67%
•Hover percentage: 65%
•VTOL: Aditional propulsion

•It can fly perfectly without the RCN system.To use the aditional propulsion,it's recomended to turn off RCN and use 85%+ power to mantain altitude.It will force the helicopter's nose down,then,just control it.

•To land,use 58% - 61% of power and level the nose.

SCREENSHOTS

USCG paint scheme 1

USGC paint scheme 2

Landing on a destroyer

Special thanks to aircraftarsenal123.This was inspired on his helicopter

Spotlights

General Characteristics

  • This plane has been featured
  • Created On Android
  • Wingspan 32.3ft (9.8m)
  • Length 46.8ft (14.3m)
  • Height 17.6ft (5.4m)
  • Empty Weight 20,873lbs (9,468kg)
  • Loaded Weight 24,483lbs (11,105kg)

Performance

  • Power/Weight Ratio 1.468
  • Horse Power/Weight Ratio 0.285
  • Wing Loading 14,557.2lbs/ft2 (71,074.3kg/m2)
  • Wing Area 1.7ft2 (0.2m2)
  • Drag Points 8815

Parts

  • Number of Parts 289
  • Control Surfaces 0
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  • Profile image
    4,009 LusKa

    @FETUKH of course boi,go ahead!

    7 days ago
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    9,540 FETUKH

    It's nice.Can I install it on my USCG WHEC, please?

    8 days ago
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    @LusKa sorry to be that guy but "Builded"

    Great Aircraft though!

    11 days ago
  • Profile image

    @LusKa no problem.

    +1 11 days ago
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    4,009 LusKa

    @EternalDarkness thank's for the feedback.I think i'm learning yet,and mistakes like that happen.I will pay more attention in my next build.Thank's for the support!

    11 days ago
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    105 Rsouissi

    @LusKa if you don't care I will fix the landing gear and thanks for this beautiful heli

    11 days ago
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    Yes. :) @EternalDarkness

    +1 11 days ago
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    @F104Deathtrap it doesn't happen with stock propellers, as they don't detect airspeed. They only have a vector pointing forward in relation to the propeller axis. I know about retreating blade stall and dissymmetry of lift, but that's not what's going on here. It's the tail swinging down/forward under its mass when you pitch forward, due to it being slightly heavier than the nose. It can be corrected without much effort (I was probably too hasty when I tested it yesterday). Still, helicopters have a vertical stabilizer to prevent that kind of behavior. This one has a visual vertical stabilizer, but no wing piece inside it. Also, there are no wing pieces inside horizontal stabilizers, making pitch control at high speed a bit awkward.
    Another problem that sprouts from the lack of stabilizers is inability to turn the helicopter the standard pitch + roll way at speed, and the sideslip whenever you turn. I turn the helicopter 90°, and it keeps going in the previous direction sideways. Those stabilizers are on real helicopters for a reason, and should have been used here.

    +2 11 days ago
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    My favorite helicopter! Nice job!

    +1 12 days ago
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    @EternalDarkness You may already be familiar with this, but helicopters tend to roll to one side as they move forward. It's called retreating blade stall. This isn't a yaw effect, as you described, but it is similar.

    +1 12 days ago
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    I’m currently unable to download anything but I’m upvoting on your modeling skills alone. This looks great, really good job on this, although I can’t say anything on performance it’s prolly the most accurate H-65 this site has seen. You really don’t need to credit me though, I had absolutely no part in your build aside from inspiration maybe

    +1 12 days ago
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    3,104 Zippy6

    These fly over my house all the time. (I live just north of the CG training center)

    +1 12 days ago
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    @LusKa it yaws while flying forward, requiring constant adjustment. I could probably fly it after a bit of practice, but it's difficult on the first try. I'll test it again when I get home to see if it was a problem with the game.

    +3 12 days ago
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    Sweet!

    12 days ago
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    4,009 LusKa

    @EternalDarkness i played with it normaly and found no problems.The only thing i have a problem with was the yaw,but it was easily controlable.I could control it normaly.I even landed in one of the destroyers in something like 14 seconds.Even with the additinal propulsion on maximum and throttle on maximum it flies good.So if you can explain what you want to say i would appreciate.

    12 days ago
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    9,005 Potato21

    Amazing! It’s my favorite helicopter to@LusKa

    +1 12 days ago
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    It looks good, but performance are terrible. As if it doesn't even have a vertical stabilizer. Or horizontal ones. It just won't keep direction.

    +2 12 days ago
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    22.3k CRJ900Pilot

    Cool!

    +1 12 days ago
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    4,009 LusKa

    @Strikefighter04
    @Batata21

    12 days ago
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    4,009 LusKa

    @aircraftarsenal123
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    @USSR

    12 days ago
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    4,009 LusKa

    @stellarlabs
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    12 days ago
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    4,009 LusKa

    @Homem das cavernas999
    @randomusername
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    12 days ago
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    4,009 LusKa

    @WNP78
    @CRJ900Pilot
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    12 days ago
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    4,009 LusKa

    @ProcessedPlAnEs
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    12 days ago