767-300ER with winglets makes first flight

Just broke:

Blended Winglets Make First Flight on Boeing 767-300ER

SEATTLE, July 21, 2008 /PRNewswire via COMTEX/ –An American Airlines 767-300ER equippedwith Aviation Partners Boeing Blended Winglets took to the skies for the firsttime at 1:50 p.m. central time Sunday July 20th. The newly modified aircraftflew a ferry flight from Kansas City, Missouri to San Bernardino, Californiawhere it will undergo two months of certification and winglet performanceflight testing. The Blended Winglet installation, along with necessary wingand aircraft systems modifications, was performed by American Airlinesemployees at their Kansas City Maintenance Base.


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5 Responses to 767-300ER with winglets makes first flight

  1. jerry July 22, 2008 at 3:14 am #

    its looks so strange yet so awesome, 757 on steroids, which it is

  2. Larry A. Toler July 22, 2008 at 3:58 pm #

    No, not really blended winglets, that 763 is just flexing his muscles.
    It does look weird.

  3. Seaswiss July 23, 2008 at 12:02 pm #

    This linked winglet article has such a blatant error.
    Let us do the math. 500 tons of carbon X 200 lb/ton = 10 million lb of carbon saved per year.
    500K gallons saved per year X 6.5 lb/gal = 3.25 million pounds of fuel. How can there be over 3 times more carbon mass in a gallon of fuel than the total mass of fuel including all other elements?
    But then man made global warming is based on feelings, not science or the laws of physics.

  4. wagga July 23, 2008 at 2:41 pm #


    Burning 1 lb of fuel requires around 15lbs of air.
    That air contains around 20% oxygen.
    About 3 (15 times 20%)lbs of oxygen is added to that pound of fuel to form carbon dioxide. Some of that 4lbs. is water, but the carbon atoms are much heavier than the hydrogen atoms, so 3.25 sounds about right.

    Math is at http://en.wikipedia.org/wiki/Air-fuel_ratio.

    Have fun.

  5. Thad Beier July 23, 2008 at 4:10 pm #

    The article’s math is correct. The weight of carbon dioxide created is far higher than the weight of the jet fuel. Basically, each carbon atom in jet fuel has attached to it approximately two hydrogen atoms (somewhat more than 2, because the carbon chains are of finite length), and these get replaced by oxygen atoms when burned, yeilding CO2. Oxygen is 16x as heavy as hydrogen, so the ratio of the weight of the carbon dioxide to the weight of jet fuel is about 3.14:1. So, for 500,000 gallons of jet fuel when burned would yeild about 5,500 tons of CO2.

    If anything, the article is conservative in its figures.

    But, repeating your incorrect, childish argument three times did convince me!

    Thad Beier