fuel efficiency

Cleared Direct Oct 1, 2026

The NASA X-66A, the Transonic Truss-Braced Wing, and the Structural Geometry That Could Cut a Third of Commercial Aviation's Fuel Burn

NASA and Boeing's X-66A Sustainable Flight Demonstrator tests a radical wing geometry that could cut single-aisle fuel burn by up to 30% by the 2040s.

Vector

Cleared Direct Sep 19, 2026

JetZero, the Blended Wing Body Demonstrator, and the Shape That Could Cut Commercial Aviation's Fuel Burn in Half

JetZero's Z-5 demonstrator, backed by a $235M Air Force contract, aims to validate a wing-body design that could cut narrowbody fuel burn by up to 50%.

Vector

Cleared Direct Sep 17, 2026

The CFM RISE Program, the Open Fan Architecture, and the Twenty Percent Fuel Burn Promise That Could Define the Next Generation of Narrowbody Aviation

CFM International's RISE program is developing an open fan engine architecture targeting 20% better fuel efficiency than today's LEAP, with entry into service projected for the late 2030s.

Vector

Cleared Direct Aug 23, 2026

JetZero, the Z-Four, and the Blended Wing Body Bet That Wants to Throw Out the Tube Fuselage Airliners Have Flown for Seventy Years

JetZero's Z-4 blended wing body promises up to 50% less fuel burn, with a full-scale demonstrator targeted for 2027 and passengers in the mid-2030s.

Vector

Cleared Direct Aug 20, 2026

JetZero, the Z4 Blended Wing Body, and the Airplane That Deletes the Line Between Wing and Fuselage

JetZero's Z4 blended wing body promises up to 50% less fuel burn by making the whole airframe a wing - here's why it might finally work.

Vector

Cleared Direct Aug 17, 2026

JetZero, the Z-4 Blended Wing Body, and the Tube-and-Wing Airplane the Air Force Is Betting Fifty Years Late

Radio Hangar explores JetZero, the Z-4 Blended Wing Body, and the Tube-and-Wing Airplane the Air Force Is Betting Fifty Years Late.

Vector

Cleared Direct Aug 17, 2026

The CFM RISE Open Fan, the Unducted Engine With Blades You Can See, and the Bet That the Next Big Jump in Fuel Burn Means Taking the Cowling Off

CFM's RISE open fan engine ditches the cowling to cut fuel burn 20% versus today's LEAP, with flight tests due around 2027-2028.

Vector

Cleared Direct Aug 14, 2026

The NASA X Sixty-Six, Boeing's Transonic Truss-Braced Wing, and the Skinny High Airplane Wing Held Up by a Strut That Wants to Cut Airliner Fuel Burn by Thirty Percent

NASA and Boeing's X-66 revives the strut-braced wing to cut narrow-body airliner fuel burn by up to 30 percent.

Vector

Cleared Direct Aug 13, 2026

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

JetZero's blended wing body promises up to 50% less fuel burn, but certification - not aerodynamics - is the real hurdle before it carries passengers.

Vector

Cleared Direct Aug 11, 2026

The CFM RISE Open Fan, the Unducted Engine Aviation Tried and Abandoned in the Eighties, and the Twenty Percent Fuel Bet Coming Back to the Single-Aisle Jet

CFM's RISE open fan engine promises 20% better fuel burn and could power the next single-aisle jet around 2035.

Vector

Cleared Direct Aug 10, 2026

JetZero's Z-Four, the Blended-Wing-Body Demonstrator Betting That the Airliner of the Future Doesn't Have a Fuselage at All

JetZero's Z-4 blended-wing-body demonstrator promises up to 30-50% fuel savings - here's the engineering, the funding, and the real timeline.

Vector

Cleared Direct Aug 10, 2026

The X Sixty-Six A, Boeing and NASA's Truss-Braced Wing, and the Bet That the Next Fuel Breakthrough Is a Longer, Skinnier Wing Held Up by a Stick

NASA and Boeing's X-66A tests a long, strut-braced wing that could cut single-aisle jet fuel burn by up to 30%.

Vector

Cleared Direct Aug 9, 2026

The Open Fan and CFM's RISE Program, the Unducted Engine Betting That the Next Big Efficiency Jump Comes From Taking the Cowling Off

CFM's RISE open fan engine ditches the cowling to cut fuel burn 20%, reviving a 1980s idea the tools couldn't build until now.

Vector

Cleared Direct Aug 6, 2026

JetZero and the Blended Wing Body, the Airplane Shaped Like One Big Wing That Wants to Burn Half the Fuel

JetZero's blended wing body aims to cut airliner fuel burn by up to 50% using shape alone - here's how it works and when it might fly.

Vector

Cleared Direct Jul 29, 2026

JetZero, the Blended Wing Body, and the Fifty-Percent Fuel Cut That Wants to Erase the Line Between the Wing and the Fuselage

Radio Hangar explores JetZero, the Blended Wing Body, and the Fifty-Percent Fuel Cut That Wants to Erase the Line Between the Wing and the Fuselage.

Vector

Cleared Direct Jul 29, 2026

The CFM RISE Open Fan, the Unducted Engine With No Cowl, and the Twenty Percent Fuel Burn Bet That Could Reshape the Single-Aisle Jet

CFM's RISE open fan engine ditches the cowl to chase 20% lower fuel burn on the next single-aisle jet - here's how it works and when it might fly.

Vector

Cleared Direct Jul 27, 2026

JetZero, the Blended-Wing-Body Demonstrator, and the Airplane That Hides Its Fuselage Inside the Wing

JetZero's full-scale blended wing body demonstrator aims to fly by 2027 and cut airliner fuel burn by up to 50 percent.

Vector

ATIS Jun 3, 2026

The Boeing seven sixty-seven and the miles-per-gallon number that surprises everyone

The Boeing 767 burns about 1,600 gallons per hour, but per-passenger fuel economy reaches 75 MPG - better than a Prius.

Tower

Cleared Direct May 13, 2026

JetZero and the blended wing body aircraft that could cut airliner fuel burn in half

JetZero's blended wing body aircraft could cut airliner fuel burn by 25-50%, with a full-scale prototype funded by the Air Force expected to fly in 2027.

Vector

ATIS May 11, 2026

The Boeing triple seven X and the fuel burn math that matters at forty thousand feet

The Boeing 777X beats the 777-300ER not on range but on fuel burn, saving airlines over $8 million per airframe annually.

Tower