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Halfnut
31st Mar 2007, 17:06
Didn't Boeing already look into this and said it wasn't a good idea?

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Press Release
Source: Chorus Motors plc

Delta Looks to Simplify Tow and Tug Processes on Taxiways
Thursday March 29, 1:07 pm ET

Ability to Drive Aircraft on Taxiways Will Help Airline Reduce Flight Delays and Fuel Consumption

GIBRALTAR--(MARKET WIRE)--Mar 29, 2007 -- WheelTug plc and Delta Air Lines entered into an agreement in which the airline will assist WheelTug in developing a new system that has the potential to enable pilots to back away from gates without a tow tug, and taxi to and from takeoff and landing points without using jet engines. The new WheelTug™ system aims to reduce fuel consumption, noise and emissions in airport terminal areas and taxiways, as well as reduce airport and gate congestion that can lead to reduced ground equipment delays.

"Certainly we expect this to be a 'win' for us on the business side by reducing our costs, but we're also excited about the potential for removing some complexity from gate operations for our ground personnel and doing it in an environmentally friendly fashion," said Walt Klein, Delta's director of Quality, Engineering and Training.

Full development and approval of the system is expected sometime in 2009 and Delta, as WheelTug's launch customer, could begin installing the system on its fleet of B-737NG aircraft as early as late 2009. The WheelTug system includes powerful electric motors in the airplane's nose wheel that will enable pilots to back away from gates without a tow tug and then taxi to their takeoff, or a remote start point before starting the airplane's engines. After landing, the pilot can turn off the jet engines and use the system to drive the airplane to its gate.

Further, the agreement gives Delta the right of first refusal to provide installation and maintenance services on WheelTug systems for itself and for other airlines that desire such services. Delta already performs maintenance for more than 100 customers and this could serve as another opportunity to continue to grow its maintenance insourcing business. Delta has also acquired warrants to buy 600,000 shares of WheelTug plc at an average price of $36 per share.

Isaiah W. Cox, president of WheelTug, said, "We are delighted that Delta is our U.S. development partner. Delta's passengers will be the first to realize its benefits, and we believe that over time WheelTug will provide welcome benefits to all fliers, airlines, and airports."

Longtimer
31st Mar 2007, 20:08
Here is what Boeing said about it.

Boeing Demonstrates New Technology for Moving Airplanes on the Ground
SEATTLE, Aug. 01, 2005 -- The Boeing Company [NYSE: BA] and Chorus Motors have demonstrated an exploratory technology that could lead to a more efficient way of moving airplanes when they are on the ground at airports.

Successful tests in June of an onboard electric motor attached to the nose wheel of a Boeing 767 have shown that it may be a viable way of powering airplanes to move in and around gates, largely eliminating the use of airport tow tugs and jet engines now serving this purpose, as well as reducing emissions.

"We are striving to help our aerospace customers operate more efficiently, cleanly and quietly at airports," said Jim Renton, a director of Technology Integration in Boeing Phantom Works, the company's advanced research and development unit. "Our testing has shown that onboard electric motors can be very useful in achieving that goal if packaging, weight and flight-related technical issues identified during these tests can be resolved."

"We believe onboard electric motors have a great many advantages," added Bob Carman, Chorus Motors' WheelTug™ program manager. "They could reduce the need for ground tugs and their associated costs, allow faster flight turnarounds and increased fuel efficiency per trip, and reduce airplane noise and emissions at airports, to name just a few advantages."

Phantom Works researchers, together with those from Chorus Motors, a developer of innovative electric motor technologies, have worked together this year to design, build and operate a prototype onboard electric drive system that may enable pilots of large airplanes to be in complete control of their airplanes from gate to gate.

In June, the Phantom Works/Chorus Motors team, in cooperation with Air Canada, installed an electric motor drive on an Air Canada 767 and conducted a series of successful tests. Air Canada pilots performed ground maneuvers on slopes and terrains typical of those at airports around the world, including driving in reverse from a gate and taxiing forward to a runway. Tests also were performed at ramp temperatures exceeding 120 degrees Fahrenheit and at loads of up to 94 percent of the maximum takeoff weight for the airplane.

"Powered nose wheels have very positive benefits and I am quite impressed with the potential of the electric motor technology," said Capt. Hugh Campbell, director of Pilot Qualifications at Air Canada, who participated in the testing with Air Canada's chief 767 pilot, Capt. Richard Burke.

Next steps involve working to successfully resolve the technical issues that surfaced during the tests in order to define a path for commercial system installation.

Halfnut
1st Apr 2007, 06:26
747FOCAL already shot this idea down before on this thread:

http://www.pprune.org/forums/showthread.php?t=184305

Halfnut
1st Apr 2007, 20:20
More intel:

http://www.wheeltug.gi/status.shtml