The DELTA MONSTER: An RPV designed to investigate the aerodynamics of a delta wing platform [PDF]
The mission requirements for the performance of aerodynamic tests on a delta wind planform posed some problems, these include aerodynamic interference; structural support; data acquisition and transmission instrumentation; aircraft stability and control;
Connolly, Kristen +8 more
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Noise source identification for ducted fans
, 2006 Understanding combustion noise source mechanisms, designing efficient acoustic liners and optimising active control algorithms for noise reduction requires the identification of the frequency and modal content of the combustion noise contribution. Coherence-based noise source identification techniques have been developed which can be used to identify ...
openaire +1 more source
NASA/industry advanced turboprop technology program [PDF]
Experimental and analytical effort shows that use of advanced turboprop (propfan) propulsion instead of conventional turbofans in the older narrow-body airline fleet could reduce fuel consumption for this type of aircraft by up to 50 percent.
Whitlow, John B., Jr. +1 more
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Space Human-Robot Interaction with Gaze Tracking Based on Attention Mechanism. [PDF]
Biomimetics (Basel)Dai L, Liu J, Ju Z.
europepmc +1 more source
Rotating Rake Turbofan Duct Mode Measurement System [PDF]
An experimental measurement system was developed and implemented by the NASA Glenn Research Center in the 1990s to measure turbofan duct acoustic modes. The system is a continuously rotating radial microphone rake that is inserted into the duct.
Sutliff, Daniel L.
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Ventilation approaches and radon control in Canadian houses. [PDF]
Front Public HealthGaskin J, Zhou LG, Li YE, Tardif P.
europepmc +1 more source
Quantification of Volatile Organic Compounds (VOCs), Nitrogen Oxides (NO <sub><i>x</i></sub> ), and Ultrafine Particles (UFPs) Emitted by Domestic Air Fryers: A Chamber Study of Indoor Air Quality Impacts. [PDF]
ACS EST AirTang R +4 more
europepmc +1 more source
Reducing particulate emissions from 3D printers using low-cost enclosures and engineering controls. [PDF]
Rapid Prototyp JBarnes C, Dye N, O'Connor C, Hammond D.
europepmc +1 more source
Historical overview of V/STOL aircraft technology [PDF]
The requirements for satisfactory characteristics in several key technology areas are discussed and a review is made of various V/STOL aircraft for the purpose of assessing the success or failure of each design in meeting design requirements.
Anderson, S. B.
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