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Briefs Aerospace
Influence of Leading-Edge Oscillatory Blowing on Time-Accurate Dynamic Store Separation
Developing an understanding of, and potentially controlling, pitch bifurcation could improve weapons delivery.
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Boeing and NASA Unveil Lightweight, Ultra-Thin, More Aerodynamic Transonic Truss-Braced Wing Concept
Engineers at Boeing and NASA are collaborating on a lightweight, ultra-thin Transonic Truss-Braced Wing (TTBW) concept, designed to be...
Articles Software
Designing a High-Speed Decoy Unmanned Aerial Vehicle (UAV)
Drone aircraft and their uses have been evolving quickly, supported by a great deal of ongoing research. One area of increasing interest is the decoy drone, designed to mimic the...
Articles Aerospace
Aeroacoustic Simulation Delivers Breakthroughs in Aircraft Noise Reduction
Aircraft manufacturers face increasingly stringent standards for reducing community noise. Conventional aircraft development methods based on engineering experience,...
Articles Defense
Rotorcraft Icing Computational Tool Development
The formation of ice over lifting surfaces can affect aerodynamic performance. In the case of helicopters, this loss in lift and the increase in sectional drag forces will have a dramatic...
Technology Update Defense
ETS researchers develop new methodology for wind tunnel calibration
In recent years, the École de Technologie Supérieure (ETS) Research Laboratory in Active Controls, Avionics, and Aeroservoelasticity (LARCASE) has acquired several...
Briefs Manufacturing & Prototyping
Micro-Propulsion Devices Made of Low-Temperature Co-Fired Ceramics
In the satellite industry, the trend is towards decreasing the size of satellites and clustering of small satellites. Technological advancements in microelectronics have made it more economical to launch a cluster of satellites with a single vehicle rather than the traditional...
Briefs Physical Sciences
Characterizing Turbulent Wind Flow Near a Wind Barrier Using Sonic Anemometers
The Holloman High Speed Test Track (HHSTT) facility at Holloman Air Force Base (HAFB), NM, has a test section of 1.8 km that contains an artificial rain field...
Briefs Information Technology
Overcoming Obstacles to DoD Software Technology Transition
The term "Software Wind Tunnel" (SWiT) denotes an institution proposed to be established as a means of overcoming obstacles that, heretofore, have impeded technology transition in...
Briefs Materials
Alloys for Nozzles of Hypersonic Wind Tunnels
Alloys are being developed for nozzles of hypersonic wind tunnels to be used in testing components of future hypersonic missiles, aircraft, and space transportation systems. The nozzle components...
Briefs Materials
Polymeric “Smart” Skin Materials
"Smart” skin materials based, variously, on polymers, dendrimers, carbon nanotubes, and/or other tailored molecular components are being developed for use as conformal coating surfaces of mechanical structures, including those of aircraft, to impart enhanced functionality to the coated surfaces. As used...
Briefs Mechanical & Fluid Systems
Blended Wing Body Aircraft
Scientists from Boeing Phantom Works, the National Aeronautics and Space Administration (NASA), and AFRL are testing a new aircraft with the potential to realize up to 30% better fuel efficiency because of its...
Briefs Mechanical & Fluid Systems
Improved Accuracy of Computational Fluid Dynamics Calculations
Understanding how air flows over the surfaces of an air vehicle can help AFRL designers maximize the vehicle's performance and minimize its cost. AFRL scientists recently...
Briefs Mechanical & Fluid Systems
AFRL Proves Feasibility of Plasma Actuators
AFRL is laying the groundwork for the development of revolutionary hypersonic aerospace vehicles (see Figure 1). Accordingly, AFRL engineers are examining the feasibility of replacing an air...
Briefs Mechanical & Fluid Systems
AFRL Finding Ways to Decrease Unmanned Air Vehicle Costs
In support of the Aeronautical Systems Center's (ASC) Global Hawk Systems Group, AFRL has undertaken a program to study manufacturing tolerances for laminar flow on aircraft wings. On...
Briefs Manufacturing & Prototyping
Rapid Model Fabrication for Responsive Aerodynamic Experimental Research
Technicians machine traditional metal wind tunnel models in a process that can span months. Although these models are highly precise, the meticulously slow...
Briefs Mechanical & Fluid Systems
Active Flow Control Demonstrated on “Airborne Wind Tunnel”
AFRL engineers, collaborating with aerospace manufacturers and other Air Force groups, recently demonstrated the first-ever airborne active flow control system when they...
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