The Future of Flight: Boeing Reveals Concept Aircraft With 'Transonic' Wing Design
In an effort to design a more fuel efficient and aerodynamic aircraft, Boeing has unveiled a new concept jet that looks reminiscent of aircraft from a bygone era.
The Transonic Truss-Braced Wing (TTBW) concept is a new iteration of an idea originally conceived in 2010, and Boeing researchers say it will now fly higher and faster than previous TTBW models.
As part of the Subsonic Ultra Green Aircraft Research program, Boeing and NASA researchers have been working together for the last decade to design a more fuel efficient aircraft.

The speed at which it would reach its best fuel efficiency is Mach .80, which is around 528 mph at cruising altitude. For comparison, a Boeing 787's cruising speed is Mach .85, which is approximately 561 mph.
The aircraft's ultra-thin wings are supported by a truss, bringing to mind bi-plane models from the early days of aviation or even more modern Cessna piston engined aircraft. The wings themselves are key to the concept's fuel efficiency — Boeing said its modified the wing sweep of the aircraft making the truss carry lift more efficiently.
Boeing thinks the aircraft will be 8% more fuel efficient than traditional cantilevered wing jets, Aviation Week reports.
The wingspan itself measures in at 170 feet, while the smallest Dreamliner, the -8 model, has a wingspan of 197 feet. However, the wings should be able to fold (similar to the new 777x), just past where the the truss connects to the wing — therefore allowing it to use airport gates that designed for narrowbody aircraft, like the Boeing 737 and Airbus A320.
It's more likely we'll see the return of supersonic aircraft before the TTBW flies, as it's not expected to be enter service until 2035.
This article has been edited with more accurate speed figures.
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- Earn 4X Membership Rewards® points per dollar spent at US supermarkets, on up to $25,000 in purchases per calendar year, then 1X points for the rest of the year.
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| 4X | Earn 4X Membership Rewards® points per dollar spent on purchases at restaurants worldwide, on up to $50,000 in purchases per calendar year, then 1X points for the rest of the year. |
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Why We Chose It
There’s a lot to love about the Amex Gold. It’s a fan favorite thanks to its fantastic bonus-earning rates at restaurants worldwide and at U.S. supermarkets. If you’re hitting the skies soon, you’ll also earn bonus Membership Rewards points on travel. Paired with up to $120 in Uber Cash annually (for U.S. Uber rides or Uber Eats orders, card must be added to Uber app and you can redeem with any Amex card), up to $120 in annual dining statement credits to be used with eligible partners, an up to $84 Dunkin’ credit each year at U.S. Dunkin Donuts and an up to $100 Resy credit annually, there’s no reason that foodies shouldn’t add the Amex Gold to their wallet. These benefits alone are worth more than $400, which offsets the $325 annual fee on the Amex Gold card. Enrollment is required for select benefits.Pros
- 4 points per dollar spent on dining at restaurants worldwide and U.S. supermarkets (on the first $50,000 in purchases per calendar year; then 1 point per dollar spent thereafter and $25,000 in purchases per calendar year; then 1 point per dollar spent thereafter, respectively)
- 3 points per dollar spent on flights booked directly with the airline or with amextravel.com
- Packed with credits foodies will enjoy
- Solid welcome bonus
Cons
- Not as useful for those living outside the U.S.
- Some may have trouble using Uber and other dining credits
- You may be eligible for as high as 100,000 Membership Rewards® Points after you spend $6,000 in eligible purchases on your new Card in your first 6 months of Card Membership. Welcome offers vary and you may not be eligible for an offer. Apply to know if you’re approved and find out your exact welcome offer amount – all with no credit score impact. If you’re approved and choose to accept the Card, your score may be impacted.
- Earn 4X Membership Rewards® points per dollar spent on purchases at restaurants worldwide, on up to $50,000 in purchases per calendar year, then 1X points for the rest of the year.
- Earn 4X Membership Rewards® points per dollar spent at US supermarkets, on up to $25,000 in purchases per calendar year, then 1X points for the rest of the year.
- Earn 3X Membership Rewards® points per dollar spent on flights booked directly with airlines or on AmexTravel.com.
- Earn 2X Membership Rewards® points per dollar spent on prepaid hotels and other eligible purchases booked on AmexTravel.com.
- Earn 1X Membership Rewards® point per dollar spent on all other eligible purchases.
- $120 Uber Cash on Gold: Add your Gold Card to your Uber account and get $10 in Uber Cash each month to use on orders and rides in the U.S. when you select an American Express Card for your transaction. That’s up to $120 Uber Cash annually. Plus, after using your Uber Cash, use your Card to earn 4X Membership Rewards® points for Uber Eats purchases made with restaurants or U.S. supermarkets. Point caps and terms apply.
- $84 Dunkin' Credit: With the $84 Dunkin' Credit, you can earn up to $7 in monthly statement credits after you enroll and pay with the American Express® Gold Card at U.S. Dunkin' locations. Enrollment is required to receive this benefit.
- $100 Resy Credit: Get up to $100 in statement credits each calendar year after you pay with the American Express® Gold Card to dine at U.S. Resy restaurants or make other eligible Resy purchases. That's up to $50 in statement credits semi-annually. Enrollment required.
- $120 Dining Credit: Satisfy your cravings, sweet or savory, with the $120 Dining Credit. Earn up to $10 in statement credits monthly when you pay with the American Express® Gold Card at Grubhub, The Cheesecake Factory, Goldbelly, Wine.com, and Five Guys. Enrollment required.
- Explore over 1,000 upscale hotels worldwide with The Hotel Collection and receive a $100 credit towards eligible charges* with every booking of two nights or more through AmexTravel.com. *Eligible charges vary by property.
- No Foreign Transaction Fees.
- Annual Fee is $325.
- Terms Apply.

