نتایج جستجو برای: aircraft semi
تعداد نتایج: 166893 فیلتر نتایج به سال:
In the context of reducing environmental footprint tomorrow’s aviation, Distributed Electric Propulsion (DEP) has become an increasingly interesting concept. With strong coupling between disciplines that this technology brings forth, multiple benefits are expected for overall aircraft design. These interests have been observed not only in aerodynamic properties but also structural However, curr...
As a new type of parallel manipulator, the wire-driven parallel manipulator has advantageous characteristics such as simple and reconfiguration structure, large workspace, high load capacity, high load/weight ratio, easy assembly/disassembly, high modularization, low cost and high speed. A new concept has been proposed by using the wire-driven parallel manipulator as aircraft model suspension s...
Meeting community expectations on aircraft noise has always presented a challenge to aircraft and engine manufacturers and to those involved in airport planning and air traffic management. It has been a critical issue for communities living close to airports since the introduction of turbojet and turbofan powered aircraft in civil aviation in the late 1960s and early 1970s. The technical progre...
The use of unmanned aircraft in the National Airspace System (NAS) has been characterized as the next great step forward in the evolution of civil aviation. Although use of unmanned aircraft systems (UAS) in military and public service operations is proliferating, civil use of UAS remains limited in the United States today. This report focuses on one particular regulatory challenge: classifying...
Column-averaged dry air mole fractions of carbon dioxide (XCO2) retrieved from Greenhouse gases Observing SATellite (GOSAT) Short-Wavelength InfraRed (SWIR) observations were validated with aircraft measurements by the Comprehensive Observation Network for TRace gases by AIrLiner (CONTRAIL) project, the National Oceanic and Atmospheric Administration (NOAA), the US Department of Energy (DOE), t...
Column-averaged dry-air mole fractions of methane (XCH4), retrieved from Greenhouse gases Observing SATellite (GOSAT) short-wavelength infrared (SWIR) spectra, were validated by using aircraft measurement data from the National Oceanic and Atmospheric Administration (NOAA), the US Department of Energy (DOE), the National Institute for Environmental Studies (NIES), the HIAPER Pole-to-Pole Observ...
Wildlife–aircraft collisions (wildlife strikes) with civilian and military aircraft pose notable risks and economic losses. The 4 military services within the U.S. Department of Defense maintain records regarding wildlife strikes with military aircraft. Although rotary-wing aircraft operations comprise important mission components within all 4 military services, no assessment of wildlife strike...
Human error has been implicated in almost 70-80% of civil and military aviation accidents. It appears that attempts to understand human factors in aircraft accidents and apply remedial strategies have been made in isolation in addressing a particular link in the whole process of aircraft accident prevention. The suggested holistic approach to minimize aircraft accidents, aims to provide a compo...
Militarized versions of commercial platforms are growing in popularity due to many logistical benefits in the form of commercial off-the-shelf (COTS) parts, established production methods, and commonality for different certifications. Commercial data and best practices are often leveraged to reduce procurement and engineering development costs. While the developmental and cost reduction benefit...
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