Futuristic Airplane Design and Their Viability

Echao9

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Hello everyone,

I have recently been looking into novel airplane configurations such as the blended wing body, transonic truss-braced wing, and box wing proposed by many aerospace companies like Boeing and NASA. I really love these designs and believe they can be of great benefit to society one day.

I feel like the designs have a lot of potential as they are currently being pursued by large aerospace companies and there are environmental and possibly economic (due to future carbon taxes and legislation) drives to bringing them into service. However, due to many technical and logistical barriers like airport infrastructure and certification, the viability of these configurations are very unclear. And considering the past appearances of these configurations, such as the blended wing body in military applications (which was cancelled after a few accidents), I am concerned there may not be much hope for these designs in the future.

Though another point I should mention is that society has obviously grown since then and new propulsive technologies such as hydrogen fuel cells and sustainable aviation fuels can be integrated into new airframes to maximise their benefit, which does increase their possible viability.

My questions are:
- can we expect to see these airplanes in operation in the next two decades?
- will the aviation industry seriously make the change so that they replace conventional tube and wing designs completely?
- will society be willing to fly on unconventional configurations?
 
Hello everyone,

I have recently been looking into novel airplane configurations such as the blended wing body, transonic truss-braced wing, and box wing proposed by many aerospace companies like Boeing and NASA. I really love these designs and believe they can be of great benefit to society one day.

I feel like the designs have a lot of potential as they are currently being pursued by large aerospace companies and there are environmental and possibly economic (due to future carbon taxes and legislation) drives to bringing them into service. However, due to many technical and logistical barriers like airport infrastructure and certification, the viability of these configurations are very unclear. And considering the past appearances of these configurations, such as the blended wing body in military applications (which was cancelled after a few accidents), I am concerned there may not be much hope for these designs in the future.

Though another point I should mention is that society has obviously grown since then and new propulsive technologies such as hydrogen fuel cells and sustainable aviation fuels can be integrated into new airframes to maximise their benefit, which does increase their possible viability.

My questions are:
- can we expect to see these airplanes in operation in the next two decades?
- will the aviation industry seriously make the change so that they replace conventional tube and wing designs completely?
- will society be willing to fly on unconventional configurations?
The answer is yes to all of the above. Sooner or later, we will flying around in cubes -i.e.- no wings. Heck, if you listen to one of the NASA boys, we won't need fuel!
 
The answer is yes to all of the above. Sooner or later, we will flying around in cubes -i.e.- no wings. Heck, if you listen to one of the NASA boys, we won't need fuel!
By cubes are you referring to eVTOL or alike aircraft? What fuel alternatives are you thinking - electric propulsion?
 
Flying saucers are knocking loudly on our door, we just need to open it...
Flying saucer concepts are very cool - though I don't think it's the right time for them due to constraints in technological development, which is much more prevalent compared to those for novel airframes for planes.
 
By cubes are you referring to eVTOL or alike aircraft? What fuel alternatives are you thinking - electric propulsion?
no,, more on the line that Paralay has posted.
 
We will definitely see a few Truss Wings flying, NASA is building one to prove the concept. If it pans out in terms of reduced fuel burn, then it's highly likely that the next generation of commercial aircraft will be Truss Wings.

For the BWBs, though, I'm not so sure.
1) The passenger compartment will have to be heavier/more complex due to the shape, compared to the basic tube fuselage. Yes, making it out of composites will be lighter than metal, but a composite tube fuselage will be lighter yet. It'd take very serious improvements in efficiency to override the extra weight.​
2) Passenger comfort. Even in an A380 or 777, the passengers aren't all that far from the centerline of the tube as the plane banks. In a BWB, they're going to be twice as far from the centerline or more. This increases passenger discomfort as the plane maneuvers and gets rattled around in turbulence.​
So I think BWBs will happen for military tankers and cargo planes first. Then, if the passenger discomfort isn't as bad as everyone concerned thinks, they'll get picked up for other users.
 
Truss wings are likely the most realistic advance for actual working aircraft that are not airshow-ponies.
 
Flying saucers are knocking loudly on our door, we just need to open it...
It's fair to say that for a few years I also believed it was a real flying saucer. When I saw the blueprints in Dargaud's comic in 1972, I built my first scracht model based on him.:)
It was a disappointment to find out that it was a fraud, but it is always better to know than to believe.
 

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