News & Events
This week's photos feature Airmen from around the globe involved in activities supporting
The Pearl Harbor Remembrance Day 75th Anniversary Commemoration took place at the World War II Memorial in Washington, D.C., Dec. 7, as several survivors were in attendance.
The Air Force has selected 531 senior master sergeants for promotion to chief master sergeant out of the 2,229 eligible.
Air Force officials announced five installations as candidate bases for the next two Air National Guard F-35A locations.
Air Force Secretary Deborah Lee James presented the Air Force Distinguished Public Service Award to the Air Force Caucus co-chairs on Capitol Hill Dec. 6.
Military members from the U.S. Air Force, Coast Guard and Navy, with international support from the Japan Air Self-Defense Force and Royal Australian Air Force are joining forces to airdrop and deliver donated toys, clothes, food items and other necessities to remote islands across the Pacific Ocean as part of Operation Christmas Drop 2016.
This episode of Yesterday's Air Force looks at the career of Gen.Henry H. "Hap" Arnold, the only man to ever hold both grades of general of the Army and general of the Air Force.
<span>This week's photos feature Airmen from around the globe involved in activities supporting expeditionary operations and defending America. This weekly feature showcases the men and women of the Air Force.</span>
Visitors at the Smithsonian’s National Air and Space Museum were delightfully surprised when their tour of the displays was suddenly interrupted by members of the U.S. Air Force Band and Honor Guard as they kicked off the holiday season with their fourth annual holiday flash mob Nov. 29.
When it comes to aviation fuel, the C-17 Globemaster III utilization rate makes it stand out as the largest consumer in the Air Force. This is why a team at the 418th Flight Test Squadron has been working for the past year on the Air Force Research Laboratory’s C-17 Drag Reduction Program.<br /><br />The 418th FLTS is currently wrapping up testing with the final three phases – out of five total – using 3-D printed parts by Lockheed Martin. The Lockheed Martin installations use a combination of laser positioning for locating and sealant to bond the parts to the aircraft. The laser positioning allowed the team to skip the design and build of installation tooling that would only be used during flight testing according to test managers. The bonding simplifies the installation and more importantly leaves the aircraft in its pretest condition after removal at the end of the flight test program.<br /><br />The squadron is testing parts in various configurations to see if the external structure modifications can improve airflow around the airplane. During computational fluid dynamics simulations and wind tunnel tests, areas on the C-17 were identified that showed excessive drag and were targeted for optimization. <br /><br />In the spring, the first two phases of testing were completed. Those tests were conducted with two different configurations of parts made by Vortex Control Technologies.<br /><br />The placement of the parts and the different configurations hope to reduce drag and improve fuel efficiency.<br /><br />“A 1 percent improvement in drag reduction will result in 7.1 million gallons of fuel reduction per year,” said Bogdan Wozniak, the 418th FLTS, project engineer. “One to 2 percent drag reduction could translate to $24-48 million dollars in fuel savings per year.”<br /><br />Currently, the team is preparing to test the fifth and final configuration using the Lockheed Martin parts. They have recently tested the third and fourth phases, which consisted of placing 12 microvanes toward the aft of the C-17 for phase three and then adding three fairings to each wing for phase four.<br /><br />The fifth phase will keep the 12 microvanes and six total fairings with the addition of two fairings on each winglet.<br /><br />At least three flight tests are conducted with each phase – a flying qualities regression flight and cruise performance flights at .74 and .77 Mach. The team will also conduct airdrop tests in December to ensure the microvanes do not interfere with the C-17’s airdrop mission.<br /><br />The flights are always the same to make certain the data collected in each phase can be accurately compared to each other. The 418th FLTS is also using the same C-17 for all the flights. The plane is on loan from Joint Base Lewis-McChord, Washington, along with four maintenance Airmen.<br /><br />“Aircraft and atmospheric data are collected with the aircraft flying straight and level at a constant airspeed and constant altitude with low winds and low air turbulence at 90 degrees to the wind to mitigate head- and tailwind effects. Each flight at a constant airspeed and altitude requires eight hours to acquire sufficient data for the analysis,” Wozniak said. <br /><br />Flight data is collected and put into a computer program developed by Boeing that puts out parameters for lift and drag and then compares everything to see how much drag is reduced.<br /><br />The flight tests here are the final stage of AFRL's program following computational fluid dynamics simulations and wind tunnel tests with a scale model. The data collected will be sent to AFRL at Wright-Patterson Air Force Base, Ohio, to see if any of the modifications increase streamlining and reduce drag. Then, Air Force leaders will ultimately decide whether or not any of the modifications should be implemented throughout the C-17 fleet.<br /><br />The test team at Edwards AFB consists of 412th Test Wing personnel, Lockheed Martin and Boeing contractors along with representatives from Canada, the U.K. and Australia, who have a stake in the program.<br /><br />The final flight for the C-17 Drag Reduction Program is expected to happen in December.