Results 141 to 150 of about 94,184 (315)
Effects of nonlinear aerodynamics and static aeroelasticity on mission performance calculations for a fighter aircraft [PDF]
During conceptual design studies of advanced aircraft, the usual practice is to use linear theory to calculate the aerodynamic characteristics of candidate rigid (nonflexible) geometric external shapes.
Foss, Willard E., Jr. +2 more
core +1 more source
Software to Support Remote Sensing of River Discharge Based on Critical Flow Theory
River Research and Applications, EarlyView.ABSTRACT Water resource management requires accurate observations of streamflow but standard field methods for measuring river discharge (Q$$ Q $$) can be costly and hazardous for equipment and personnel. Remote sensing has become a viable alternative, but many image‐based techniques require field data for calibration, and depth and velocity can seldom
Carl J. Legleiter, Inhyeok Bae
wiley +1 more source
Aerodatabase Development and Integration and Mission Analysis of a Mach 2 Supersonic Civil Aircraft
AerospaceThe request for faster and greener civil aviation is urging the worldwide scientific community and aerospace industry to develop a new generation of supersonic aircraft, which are expected to be environmentally sustainable and to guarantee a high-level ...
Pietro Roncioni +4 more
doaj +1 more source
Spectral characterization of plant diversity in a biodiversity‐enriched oil palm plantation
Remote Sensing in Ecology and Conservation, EarlyView.How well can airborne imaging spectroscopy detect plant diversity in vertically complex agroforestry systems? We tested this in a biodiversity‐enriched oil palm plantation in Sumatra, Indonesia, using high‐resolution hyperspectral data. We calculated spectral alpha and beta diversity and compared them to field‐based plant diversity.
Vannesa Montoya‐Sánchez +10 more
wiley +1 more source
Survivability considerations during aircraft conceptual design
, 1986 Survivability, capability, maintainability, and reliability will establish the effectiveness of a combat aircraft. Considerations for the "ilities" must take place during the conceptual design phase. Retrofit of survivability enhancement has historically increased weight, drag, and cost, while decreasing capability and performance. Proper application
openaire +1 more source
Aircraft energy efficiency laminar flow control glove flight conceptual design study [PDF]
A laminar flow control glove applied to the wing of a short to medium range jet transport with aft mounted engines was designed. A slotted aluminum glove concept and a woven stainless steel mesh porous glove concept suction surfaces were studied.
Wright, A. S.
core +1 more source
Accounting for animal movement during aerial imaging surveys
Remote Sensing in Ecology and Conservation, EarlyView.Animals are not stationary during aerial surveys; if their movements are related to the movement of the aerial platform, then bias can be introduced into subsequent population count estimates. We sought to establish a framework for assessing the impacts of animal movement on count error and platform bias by comparing aggregated counts and relative ...
Rowan L. Converse +5 more
wiley +1 more source
Analysis of turbofan propulsion system weight and dimensions [PDF]
Weight and dimensional relationships that are used in aircraft preliminary design studies are analyzed. These relationships are relatively simple to prove useful to the preliminary designer, but they are sufficiently detailed to provide meaningful design
Schairer, E. T., Waters, M. H.
core +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada +4 more
wiley +1 more source
A Method for Assessing the Risks to Sustainability Posed by Process Operations
Sustainable Development, EarlyView.ABSTRACT We present a framework for assessing the risks to sustainability posed by any given set of processes. The objective is to improve sustainability by enabling better decision‐making in policy and business contexts. The framework can be applied to any system of processes where available information supports discovery and quantification of ...
Richard C. Darton, Colin J. Axon
wiley +1 more source