- Future aircraft developments
A number of ideas are being worked on for future aircraft developments. Some are new, some have been tried before but may prove more practicable with modern technology. History tells us that many of these projects will come to nothing, but a few will set new standards in the future.
Radical aircraft designs
Blended wing bodydesigns date from the early postwar era. Research on updated designs is under way at Boeingand Cranfield University
*In addition to blended wing body designs,
Flying wing-designs also offer similar benefits and have had interesting new technologies as counter actingairbrakes (folding open both above and under the wing) [ [http://www.yourzagi.com/history.htm Flying wing aircraft] ] .
AeroVironment SkyTotefixed wing, VTOL aircraft is another type of radical rethinking on aircraft construction. It focuses on building an aircraft that has moderately good VTOL properties as well as the flight advantages of a regular fixed wing aircraft.
Fanwingis a new approach to lift, and is benefiting from investment by the UK and Italian Governments.
*The [http://www.gizmag.com/go/3060/ gravity powered aircraft] , as well as the [http://www.fuellessflight.com/techno/tech.htm fuelless airplanes] proposed by Hunt Aviation focus on a radical new way of flight.
*Another radical new aircraft design that is being relooked for the environmental advantage it can bring are
*L/P Driver is a Lift and Propulsion System being developed by
Velarus[http://www.velarus.com/] , providing utility and transport designs with near ground operation similar to helicopters while capable of jet speeds at altitude, including the possibility of supersonic design.
Solar hot air balloons and solar hot air airshipsare new types of balloons and airships. [ [http://pagesperso-orange.fr/ballonsolaire/en-index.htm Hot air balloons] ] [ [http://www.zeppy.org/news.htm Man-powered airship] ] [ [http://papalima.free.fr/motoballon/gazairship/Gazairship.htm Another man-powered airship] ]
New engine technologies
Pratt & Whitney Geared Turbofanwhich will allow the Fan and LP Turbine to each operate at optimum speed providing increased fuel efficiency and reduced noise.
*Solar and human powered propulsion-aircraft are being worked on. Aircraft like the
Solar Impulse, Helios, Pathfinderand others prove that zero emission fixed wing aircraft are possible, yet translating the concept to larger aircraft is very hardFact|date=April 2008?
Alternative fuelsfor aircraft have received limited attention. Hydrogenis perhaps the most obvious alternative to existing kerosene/ gasoline-type fuels, but the technical and infrastructural challenges inherent in developing a commercially usable hydrogen-powered aircraft are huge. The Russian manufacturer Tupolevbuilt a prototype hydrogen-powered version of the Tu-154airliner, named the Tu-155, which made its first flight in 1989. [ [http://www.tupolev.ru/English/Show.asp?SectionID=82 Tupolev.ru] ] In addition, Boeing's Research & Technology Europe (BR&TE) has made a civilian aircraft made from a 2-seat Dimonamotor- gliderrunning on a fuel cell. The plane is called the " Fuel Cell Demonstrator Airplane". [ [http://www.manufacturing.net/article.aspx?id=156880 Boeing Fuel cell airplane article 1] ] [ [http://www.boeing.com/phantom/news/2007/q1/070327e_nr.html Boeing Fuel cell airplane article 2] ]
Boundary layer suctionhas long been a subject of research. The technique works, but has traditionally consumed so much power that it was not worth doing. The necessary internal ducting is another problem. Work continues at TU Delft.
Silent Aircraft Initiativebeing conducted by Cambridge-MIT is studying a range of technologies.
* The Environmental Research Aircraft and Sensor Technology (ERAST) is being conducted by
CleanEra-projectis being conducted at TU Delftand also targets to make a completely "green" aircraft. [ [http://www.tudelft.nl/live/pagina.jsp?id=96dc8a54-b889-4296-8e6b-3f1e96058b5f TU Delft CleanEra-project] ]
Through the field of bionics, new aircraft designs with far greater agility and other advantages may be created. This has been described by
Geoff Speddingand Anders Hedenströmin an article in Journal of Experimental Biology. Similar statements were also made by John Videlerand Eize Stamhuisin their book Avian Flight[ [http://www.amazon.com/dp/0199299927 Avian Flight book] ] and in the article they present in Scienceabout LEV's [ [http://www.sciencemag.org/cgi/content/abstract/306/5703/1960 Videler, Stamhuis and Povel LEV-article in Science-magazine] ] . John Videler and Eize Stamhuis have since worked out real-life improvements to airplane wings, using bionics research.
This research in
bionics may also be used to create more efficient helicopters or miniature UAVs. This latter was stated by Bret Tobalskein an article in Scienceabout Hummingbirds [ [https://depts.washington.edu/nwst/issues/index.php?issueID=fall_2005&storyID=742 Bret Tobalske's Hummingbird-research] ] . Bret Tobalske has thus now started work on creating these miniature UAVs which may be used for espionage. UC Berkeley as well as ESA have finally also been working in a similar direction and created the Robofly[ [http://journalism.berkeley.edu/projects/mm/spingarnkoff/flyorama/robofly.html Robofly UAV] ] (a miniature UAV)and the Entomopter(a UAV which can walk, crawl and fly). [ [http://www.esa.int/gsp/ACT/biomimetics/index.htm ESA's biomimetics program] ]
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