In an effort "to make aviation more sustainable", KLM Airlines has revealed a new design for an aerodynamic 'Flying-V' plane. It's a radical new aeroplane design that puts passenger seats inside the plane's wings, and it could decrease the amount of fuel needed for flights by a substantial 20 percent.

Electric planes too have been in the works with multiple prototypes making round-the-globe trips. But, the technology hasn't been very promising for aeroplanes because of multiple challenges.

© KLM

The V-Shaped design, on the other hand, was conceived by designer Justus Benad and is being further realised by a team of researchers at the Netherlands' Delft University of Technology.

It's claimed the plane will use 20 percent less fuel than the Airbus A350-900 while carrying a similar number of passengers -- the Flying-V will seat 314, while the Airbus A350 seats between 300 and 350 depending on the configuration. One of the features the Flying-V will share with the A350 is an identical wingspan of 65 meters.

© Reuters / Airbus A350

"Aviation is contributing about 2.5 percent of global CO2 emissions, and the industry is still growing, so we really need to look at more sustainable aeroplanes," Pieter Elbers, CEO and president of KLM, said in a statement to CNN. The plane's increased fuel efficiency is largely a result of its aerodynamic design, Vos explained, although its reduced weight also contributes.

He also further added electric planes are too heavy and can't fly with hundreds of passengers over the Atlantic. The design and technology to operate an electric plane is rather inferior at the moment, and decades away.

© KLM

The plane also uses the most fuel-efficient turbofan engines that exist, according to KLM. While the current model still uses kerosene, it can be adapted to use electric turbofans in the future.

Although we'll have to wait a while to see the Flying-V in its full glory, KLM announced that a "flying scale model and a full-size section of the interior of the Flying-V will be officially presented at the KLM Experience Days at Amsterdam Airport Schiphol in October.