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Aviation / Aerospace

Boeing Transonic Truss-Braced Wing (TTBW)


Commercial Airliner Concept [ 2023 ]



The future of commercial flight might look something like the Transonic Truss-Braced Wing concept proposed by Boeing.



Authored By: Staff Writer | Last Edited: 08/22/2023 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

VIEW SPECIFICATIONS [+]
Since 2010, The Boeing Company, together with the aeronautical experts at NASA, have been developing an efficient form of high-set wing which has evolved to become the centerpiece of Boeing's "Transonic Truss-Braced Wing" (TTBW) concept. The wing is intended as a high-efficiency alternative to modern monoplane designs, potentially able to fly higher and faster than such types if proven. The TTBW has seen consistent and progressive refinement since it was first showcased and may very well mark the future of civilian airspace powered flight.

The latest Boeing artist's impression of the aircraft in 2019 sees a fuselage component and tail unit not unlike that of the existing Model 737 or MD-80 airliner. The most noticeable difference becomes the forward-set, shoulder-mounted, high-aspect-ratio wing mainplanes of reduced drag which are seated high along the fuselage sides and further braced by a truss supporting plane emanating from the low sides of the fuselage. Nacelled engines are underslung at each wing mainplane - and these may end up as hybrid-electric engines to maximum fuel efficiency over range. The flight deck and tricycle undercarriage (retractable) are all in their usual place in the Boeing jet airliner design.

Currently (2019) the mainplanes have a span of 170 feet and are of an ultra-thin chord to promote exceptional aerodynamic efficiency - as such the thin wings require the presence of the supporting truss members which enable such a slim wing to be used. The truss sections have thicker chord near the fuselage and taper towards the ends meeting the underside of the mainplanes. Due to their extended span over that of conventional airliner wings, the TTBW's mainplanes are set to have a wing-folding feature to better operate at modern airport terminals. The wings have already been tested in a NASA wind tunnel.

The original TTBW design promoted speeds in the range of Mach 0.70 to 0.75 - the new wings make speeds of 0.80 possible according to estimates.

Into 2019, testing on the subscale model is ongoing and will continue, ultimately paving the way for a full-scale "x-plane" offering still to come.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

January 2023 - NASA has selected the Boeing TTBW design for its Sustainable Flight Demonstrator (SFD) requirement.

Specifications



Boeing Company - USA
Manufacturer(s)
United States
Operators National flag of the United States
2023
Service Year
United States
National Origin
In-Development
Project Status
2
Crew
0
Units


COMMERCIAL AVIATION
Used in roles serving the commercial aviation market, ferrying both passengers and goods over range.
X-PLANE
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


93.5 ft
(28.50 meters)
Length
169.9 ft
(51.80 meters)
Width/Span
37.1 ft
(11.30 meters)
Height
61,729 lb
(28,000 kilograms)
Empty Weight
110,231 lb
(50,000 kilograms)
Maximum Take-Off Weight
+48,502 lb
(+22,000 kg)
Weight Difference
monoplane / high-mounted / swept-back
Mainplane Arrangement
Monoplane
Design utilizes a single primary wing mainplane; this represents the most popular modern mainplane arrangement.
High-Mounted
Mainplanes are mounted at the upper-most position allowable along the dorsal line of the fuselage.
Swept-Back
The planform features wing sweep back along the leading edges of the mainplane, promoting higher operating speeds.


2 x Non-afterburning turbofan engines.
Propulsion
615 mph
(990 kph | 535 knots)
Max Speed
32,808 ft
(10,000 m | 6 miles)
Ceiling
2,485 miles
(4,000 km | 2,160 nm)
Range


MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


None.


Transonic Truss-Braced Wing (TTBW) - Base Project Name.


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Images



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Image of the Boeing Transonic Truss-Braced Wing (TTBW)
Image from Boeing Creative Services; released to the Public.

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