Accession Number : ADA490778


Title :   No Winglets: What a Drag...Argument for Adding Winglets to Large Air Force Aircraft


Descriptive Note : Master's thesis


Corporate Author : MARINE CORPS COMMAND AND STAFF COLL QUANTICO VA


Personal Author(s) : Safranek, Joel W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a490778.pdf


Report Date : Jan 2008


Pagination or Media Count : 41


Abstract : To save hundreds of millions of dollars in operating costs and improve aircraft capabilities, the Air Force should retrofit its existing large aircraft with winglets. The U.S. Government faces a situation today that is similar to one it faced during the 1970s: growing instability in the Middle East that is contributing to the towering price of oil. As oil prices have escalated, so have political demands to decrease America's reliance on foreign oil. One way to conserve energy is based on a NASA aeronautical engineer's research during the 1970s on winglets. Dr. Richard Whitcomb's research showed that adding winglets to large aircraft decreased fuel consumption by 3 to 6 percent. Unfortunately for winglet technology, oil prices plummeted during the 1980s and remained low throughout the 1990s, distracting the government's energy conservation priorities and burying the winglet concept for large military aircraft. The concept remained dormant for over two decades until soaring energy prices once again brought improving aircraft aerodynamic efficiencies to the forefront of the energy conservation debate. The data collected here display the overwhelmingly positive arguments for retrofitting the Air Force's existing transport-type airframes with winglets.


Descriptors :   *WINGS , *AVIATION FUELS , *RETROFITTING , *FUEL CONSUMPTION , *ENERGY CONSERVATION , *MILITARY AIRCRAFT , *TRANSPORT AIRCRAFT , IMPORTS , CRUDE OIL , AERONAUTICAL ENGINEERING , JET ENGINE FUELS , AERODYNAMIC CHARACTERISTICS , THESES , COST REDUCTION , AIR FORCE , UNITED STATES GOVERNMENT


Subject Categories : Aerodynamics
      Transport Aircraft
      Non-electrical Energy Conversion
      Fuels


Distribution Statement : APPROVED FOR PUBLIC RELEASE