JetZero, the Blended Wing Body, and the Airliner Shaped Like a Manta Ray That Wants to Cut Fuel Burn in Half

JetZero, a Long Beach, California company, is developing a blended wing body (BWB) airliner - shaped like a manta ray rather than the familiar tube-with-wings - that claims up to a 50% reduction in fuel burn and emissions compared to today’s aircraft of the same size. The aerodynamic concept is proven and the company has serious backing, including a 2023 U.S. Air Force demonstrator contract and partners like Northrop Grumman and Scaled Composites. The hard part isn’t the shape - it’s clearing a certification path that no passenger blended wing body has ever completed.

Why do all airliners look the same?

Look at any ramp and every airliner shares one silhouette: a cylindrical fuselage with wings and a tail. The Boeing 737, the Airbus A320, the 787, the A350 - all variations on the same architecture. That template has been the standard since the Boeing 707 in the 1950s, roughly 70 years of the same fundamental design.

The reason isn’t that the tube is the best shape for flying. It’s the best shape for building, certifying, and financing an airplane without betting the company. The tube is a compromise the industry stopped questioning - until now.

What is a blended wing body?

A conventional airliner splits three jobs across three structures. The fuselage carries passengers and cargo, the wings generate lift, and the tail provides stability. Three separate parts bolted together.

A blended wing body discards that division. The entire aircraft becomes one continuous lifting surface. The wide, flat center section where passengers sit blends smoothly into the outer wings, with no hard corner between them. From above it resembles a flying wing with a thick middle - a design relative of military flying wings like the B-2 bomber.

Why is the blended wing body more efficient?

The appeal comes down to one metric: lift-to-drag ratio, the measure of how much lift a wing produces for each unit of drag.

On a conventional airliner, the fuselage is almost pure penalty. The tube generates very little lift - it’s just parasite drag you haul through the air so there’s somewhere to put the seats. On a blended wing body, the fuselage is the wing. The section carrying passengers also makes lift, reducing the total wetted area (skin exposed to airflow) and spreading lift across a wider, more efficient shape.

That efficiency is where the headline 50% fuel reduction comes from - but the number deserves honesty. Not all of it comes from the shape. A clean-sheet 2020s aircraft also gets modern engines, materials, and systems the aging fleet lacks. Some analysts put the pure aerodynamic gain at closer to 20–30%, with the rest coming from everything else being new. Even so, in an industry where a new engine generation fights for 10 to 15% and calls it a revolution, a 30% gain from the airframe alone is enormous.

Why isn’t every airliner already shaped like this?

Three engineering problems have kept the blended wing on the drawing board.

Pressurization. A cylinder is the ideal shape to hold pressure. A circular cross-section carries pressure load in pure, even tension all the way around - the most efficient pressure vessel there is. A wide, flat cabin wants to bow outward like the lid of an overfilled cooler. Preventing that requires internal ribs, walls, and reinforcement - all of it weight. The blended wing hands you aerodynamic savings, then quietly claws some back in structural weight.

Ride quality at the edges. On a tube, everyone sits near the roll axis, so a bank barely moves them. On a wide cabin, passengers on the outboard sides swing through a much larger arc when the aircraft rolls - the difference between the center and the outer edge of a merry-go-round. Managing this requires flight control laws that keep maneuvers gentle, and it’s a genuine human-factors challenge.

Evacuation and certification. Airliner certification requires proving the aircraft can be evacuated in 90 seconds with half the exits blocked. On a tube, everyone is in an aisle with exits on the sides. On a wide cabin, passengers can sit far from any exit or window. No passenger blended wing body has ever been certified for the airlines. The airworthiness rulebook was written around the tube, so regulators must develop entirely new means of compliance - slow, and slow is expensive.

Why does JetZero think now is the moment?

JetZero has made several deliberate choices that separate it from earlier attempts.

It isn’t reinventing propulsion. The design uses conventional, existing-class turbofan engines mounted high on the rear of the aircraft. Startups that try to invent the airframe, the powerplant, and the batteries all at once tend to run out of money first. JetZero is making one big bet - the shape - and buying the rest off the shelf.

Engine placement does double duty. Mounting engines on top and at the back shields much of the engine noise from the ground, since the aircraft body sits between the engine and the community below. It also feeds the engines cleaner air - quieter and more efficient from a single packaging decision.

It has real money and real partners. In August 2023, the U.S. Air Force awarded JetZero a contract worth roughly $235 million to build a full-scale demonstrator. The military sees a blended wing body as an excellent tanker or cargo platform - more fuel offloaded and more range from the same airframe. To build it, JetZero brought in Northrop Grumman and Scaled Composites, the shop Burt Rutan founded and the team behind the first privately funded human spaceflight. These are organizations that finish flying hardware.

When could a blended wing body carry passengers?

The plan is a full-scale demonstrator in the class of a Boeing 767, targeting a first flight around 2027. The eventual airliner concept seats roughly 250 passengers and aims at the middle of the market - the mission the 767 and A330 fly today.

But a demonstrator is not an airplane you can buy a ticket on. The stretch between a demonstrator and a certified passenger airliner is the hardest, longest, and most expensive part of the journey: years of pressurization cycles, evacuation proof, flutter testing, and a certification basis negotiated with the FAA for a configuration with no precedent. Realistically, a passenger blended wing body entering airline service is a mid-to-late 2030s event at the earliest - and only if the funding holds and the physics cooperates.

Has this been tried before?

Yes, and the history matters. NASA and Boeing flew a remotely piloted subscale blended wing body, the X-48, in the 2000s. It flew beautifully and validated the aerodynamics - but never became an airliner, because the business case and certification mountain were too large at the time. Airbus later flew a subscale demonstrator called MAVERIC, also promising, also still not an airliner.

The idea isn’t new and the aerodynamics have been validated for years. What has never happened is someone carrying the concept all the way across the certification finish line with the money and the will to do it.

What’s the real bet with JetZero?

The interesting bet isn’t aerodynamic - the shape has been known to work since the X-48. The real experiment is industrial and regulatory: whether a startup, with a defense anchor customer covering some of the bills, can finally push a blended wing body through the certification gauntlet that defeated everyone before it. The wing is the easy part.

The balanced scorecard looks like this. On the promise side: genuinely better aerodynamics validated by decades of research, fuel and emissions cuts that dwarf a normal new airplane even at the conservative end, serious partners, a defense customer that de-risks early money, and quieter operations for communities under the approach path. On the problem side: a cabin that fights you on pressurization and adds structural weight, ride-quality questions for passengers at the edges, a certification path never walked for airline passengers, and a timeline that runs well into the 2030s.

Both columns are true at once. The blended wing body is not vaporware - but the gap between a demonstrator that flies and a manta ray full of families crossing the Atlantic is enormous, and it’s paved with certification, not aerodynamics. For the first time in a generation, the shape of the airliner is genuinely up for grabs.

Key Takeaways

JetZero’s blended wing body claims up to 50% lower fuel burn, though the pure aerodynamic contribution from the shape is likely closer to 20–30%, with the rest from modern engines, materials, and systems.
The aerodynamics are settled science, validated by NASA/Boeing’s X-48 and Airbus’s MAVERIC subscale demonstrators.
JetZero’s biggest challenges are pressurizing a non-circular cabin, ride quality, and evacuation/certification - not aerodynamic performance.
A 2023 U.S. Air Force contract worth roughly $235 million, plus Northrop Grumman and Scaled Composites as partners, targets a full-scale demonstrator first flight around 2027.
A passenger blended wing body in airline service is realistically a mid-to-late 2030s prospect, gated by certification rather than technology.