Story Research question?

[naosu]

So... you guys might remember, that movie Avatar in 2009. I have a question...

In that movie they had those neat looking double bladed helicopters. I'm doing research for one of my stories and wanted to know if it was really possible to make helicopters like that? Do the physics work on that design? Or is there already helicopters like that?

I'm doing research or my android story, and got curious about what helicopters would look like 40 years from now, which is what prompted this. Although I won't be following that helicopter design, I wanted to get a feel for what a neo-Blackhawk helicopter would look 30 years ahead, etc.

Thanks.

 

[CharlesEBrown]

If I remember correctly, that vehicle is a VTOL (Vertical Take Off/Landing) not a true helicopter - and that there are similar aircraft in existence currently, just not on that scale.

 

[Santaisblue]

I present you with the V-22 Osprey; we've had them since 1988. It's just better for helicopters to have a blade at the front and end (It's what is used today in the military), so the V-22 are used less.

The only reason that the helicopter in the movie feels sci-fi is that the propellers have rings surrounding them.

 

[naosu]

Those ospreys are very cool. Thanks for putting that up. They are really expensive though. I can't remember the figures but 1 of those you could have like 7 or 8 black hawks or something. To me both the black hawks and the ospreys are very pretty looking. I like both.

Also thanks to CharlesEBrown and you.

 

[LeilaniOtter]

I present you with the V-22 Osprey; we've had them since 1988. It's just better for helicopters to have a blade at the front and end (It's what is used today in the military), so the V-22 are used less.

The only reason that the helicopter in the movie feels sci-fi is that the propellers have rings surrounding them.

View attachment 40098

We see these every year at the annual Air Show. Quite an amazing feat of aviation for the time.

 

[Corty]

Question:

Wasn't Pandora's gravity or air or whatever different? Do they need to compensate for it in any way, shape, or form?

Edit:

And this is the part where I think AI has its uses for writing. So I went and asked GPT what its take on it is:

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? 1. Are the double-rotor helicopters in Avatar realistic?​

You're likely referring to the SA-2 Samson or AT-99 Scorpion Gunship—both have coaxial rotors (two rotors mounted on top of each other but rotating in opposite directions).

Short answer: Yes, the physics work. Coaxial helicopters are real.​

They are a real and proven concept used by companies like Kamov (Russia)—notably the Ka-50 “Black Shark” and Ka-52 “Alligator.”


Advantages:

• No need for a tail rotor (which typically balances torque).
• More lift in a smaller footprint—great for tight environments or high altitudes.
• Higher agility and speed potential.

Disadvantages:

• Complex gearbox and rotor head design.
• Expensive to maintain.
• Increased vibration.

So yes, the Avatar helicopters are grounded in real-world physics—just stylized and exaggerated for cinematic impact.

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? 2. What might a “neo-Blackhawk” look like in 40 years?​

A Blackhawk 40 years from now (2060s) might include:

• Electric or hybrid turbine engines: quieter, more efficient.
• Ducted fan tail rotors or no tail rotor at all (like NOTAR tech).
• Advanced composite materials: lighter, more durable armor.
• Adaptive stealth skins or active camouflage.
• AI-assisted autopilot or full autonomous flight for recon or transport.
• Retractable rotary blades for multi-mode aircraft (VTOL-to-jet transition).
• Modular bays to switch from cargo to evac to gunship roles.

Think of something between:

• The Sikorsky Raider X (a real prototype),
• The V-280 Valor tiltrotor, and
• The Avatar-style coaxial gunship.

You could also consider compound helicopters (like the Defiant X), which combine rotors with a rear pusher propeller for higher forward speeds—kind of a middle step between chopper and jet.

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? 3. Did Pandora have different gravity/atmosphere, and does it affect flight?​

Yes—Pandora's environment is different, and the movie accounts for it subtly:

• Gravity is lower (~0.8g of Earth).
• Atmosphere is thicker and denser, rich in CO₂ and other gases.
• Air pressure is higher than Earth’s, which improves aerodynamic lift.

So what does that mean for aircraft?​

• Lower gravity = easier to lift things.
• Thicker atmosphere = more lift at lower speeds and better efficiency for rotorcraft and wings.
• Aircraft can be heavier or carry more payload with less fuel cost.
• Wings can be smaller, or lift mechanisms can be more compact.

Essentially: flight is easier on Pandora—so a gunship with coaxial rotors makes even more sense there.

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? TL;DR — For your android story:​

If you're setting a scene 30–40 years in the future:

• Coaxial or compound helicopters are realistic options.
• Consider electric turbines, adaptive skins, or drone/AI assist.
• Military helicopters could blend VTOL, stealth, and modularity.
• And yes—the Avatar choppers are “Hollywoodized” but based on sound engineering.

 

[Ai-chan]

So... you guys might remember, that movie Avatar in 2009. I have a question...

In that movie they had those neat looking double bladed helicopters. I'm doing research for one of my stories and wanted to know if it was really possible to make helicopters like that? Do the physics work on that design? Or is there already helicopters like that?

I'm doing research or my android story, and got curious about what helicopters would look like 40 years from now, which is what prompted this. Although I won't be following that helicopter design, I wanted to get a feel for what a neo-Blackhawk helicopter would look 30 years ahead, etc.

Thanks.

Possible? Very. However, the only way it can work is if the rotors use electric engines. There is no turbine engine small enough to fit the in the middle of the rotor while delivering that kind of lift. The closest example is the Osprey, but the Osprey is clearly different due to the nature of the engine compartments.

The reason why this kind of configuration works is probably because of the kind of lift that vehicles like this is required to carry. This means missiles (not just a dozen like in modern battle choppers), maybe a couple of semi-auto mortar guns, a self-propelled artillery or large artillery (205mm or bigger) for quick repositioning or positioning in places that can't normally be reached such as at the top of a mountain.

This configuration is a big too overpowered for SAR but it is possible for it to have variable output, allowing it to switch to low thrust mode seamlessly. It could also be used for strategic repositioning of those mechas. Apart from that, it can also function in the role of low altitude bomber.

What is the benefit of having this over the simple helicopter? Obviously if one rotor got shot down, you can still fly with the other one. However, due to torque reaction, the dual rotor would be spinning like crazy, but it would still allow the crew more time to bail out. A huge advantage compared to the conventional helicopter is that there isn't a huge blade spinning wildly trying to slice you when you jump off. You can just time your jump so that when you do jump, the blade that is still spinning will not be where your feet would be in the next few seconds.