definition of Wikipedia
|Manufacturer||Boeing Commercial Airplanes|
|Status||Proposed design, canceled|
The Boeing Sonic Cruiser was a concept airliner with a delta wing-canard configuration. It was distinguished from conventional jet airliners by its delta wing and high-subsonic cruising speed of up to Mach 0.98. Boeing first proposed it in 2001, but airlines generally preferred lower operating costs over higher speed. Boeing ended the Sonic Cruiser project in December 2002 and shifted to the slower, but more fuel-efficient 7E7 (later 787 Dreamliner) airliner.
The Sonic Cruiser concept developed from studies that began in the 1990s. A variety of concepts were studied, including supersonic aircraft, aircraft with the engines mounted above the wing, aircraft with a single vertical tail, and aircraft with rectangular intakes. The initial sketches released to the public were highly conjectural. A patent drawing filed by Boeing on March 22, 2001 put the baseline aircraft's dimensions at approximately 250 feet (76 m) in length, with a wingspan of 164.9 feet (50.3 m).
The Sonic Cruiser was born from one of numerous outline research and development projects at Boeing with the goal to look at potential designs for a possible new near-sonic or supersonic airliner. The strongest of these initial concepts was named the "Sonic Cruiser" and publicly unveiled on March 29, 2001, shortly after the launch of the A380 by rival Airbus. Boeing had recently withdrawn its proposed 747X derivative from competition with the A380 when not enough airline interest was forthcoming, and instead proposed the Sonic Cruiser as a completely different approach.
Instead of the A380's massive capacity, requiring a hub and spoke model of operation, the Sonic Cruiser was designed for rapid point-to-point connections for 200 to 250 passengers. With a delta wing and canards arrangement, and flying just short of the speed of sound at Mach 0.95-0.98 (about 627 mph or 1,010 km/h at altitude), the Sonic Cruiser promised 15-20% faster speed than conventional airliner without the noise pollution caused by the sonic boom from supersonic travel. The aircraft design was to fly at altitudes in excess of 40,000 ft (12,000 m), and a range somewhere between 6,000 nautical miles (11,000 km) and 10,000 nautical miles (19,000 km). Boeing estimated the Sonic Cruiser's fuel efficiency to be comparable to current wide body twin-engine airliners.
Wind tunnel testing and computational fluid dynamics analysis further refined the Sonic Cruiser concept. Based on artwork released by Boeing in July 2002, the Sonic Cruiser now sported two taller vertical tails with no inward cant, and the forward canard was set at zero degrees dihedral. Boeing was working to finalize the aircraft's configuration in mid-2002.
In the end, most airlines favored lower operating costs over a marginal increase in speed, and the project did not attract the interest for which Boeing had been hoping. The Sonic Cruiser project was finally abandoned by December 2002 in favor of the slower but more fuel-efficient 7E7 (later renamed Boeing 787 Dreamliner). Much of the research from the Sonic Cruiser was applied to the 787, including carbon fiber reinforced plastic for the fuselage and wings, bleedless engines, cockpit and avionics design.
On April 16, 2012, Boeing published an application for a patent for an aircraft configuration similar to that of the Sonic Cruiser.
Dictionary and translator for handheld
New : sensagent is now available on your handheld
A windows (pop-into) of information (full-content of Sensagent) triggered by double-clicking any word on your webpage. Give contextual explanation and translation from your sites !
With a SensagentBox, visitors to your site can access reliable information on over 5 million pages provided by Sensagent.com. Choose the design that fits your site.
Improve your site content
Add new content to your site from Sensagent by XML.
Crawl products or adds
Get XML access to reach the best products.
Index images and define metadata
Get XML access to fix the meaning of your metadata.
Please, email us to describe your idea.
Lettris is a curious tetris-clone game where all the bricks have the same square shape but different content. Each square carries a letter. To make squares disappear and save space for other squares you have to assemble English words (left, right, up, down) from the falling squares.
Boggle gives you 3 minutes to find as many words (3 letters or more) as you can in a grid of 16 letters. You can also try the grid of 16 letters. Letters must be adjacent and longer words score better. See if you can get into the grid Hall of Fame !
Change the target language to find translations.
Tips: browse the semantic fields (see From ideas to words) in two languages to learn more.