Results 131 to 140 of about 31,692 (257)
Guidance and control/ACEE [PDF]
Active controls improve airplane performance by stabilizing its flight, reducing departures from stable flight, and alleviating loads imposed by external forces such as gusts, turbulence, or maneuvers.
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Lightning Outbreaks at the Mature Stage of Tropical Cyclone: Case Study for Hurricane Dorian (2019)
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.Abstract The relationship between tropical cyclone (TC) lightning activity and intensity change has been examined for nearly 30 years, yet a clear consensus remains elusive, reflecting the complexity of the processes governing TC lightning. This study investigates the physical mechanisms that triggered inner‐core lightning outbreaks during the mature ...
Taiga Tsukada +4 more
wiley +1 more source
A trust‐region funnel algorithm for gray‐box optimization
AIChE Journal, Volume 72, Issue 5, May 2026.Abstract Gray‐box optimization, where parts of optimization problems are represented by algebraic models while others are treated as black‐box models lacking analytic derivatives, remains a challenge. Trust‐region (TR) methods provide a robust framework for gray‐box problems through local reduced models (RMs) for black‐box components, but they are ...
Gul Hameed +4 more
wiley +1 more source
Overview of Langley activities in active controls research [PDF]
The application of active controls technology to reduce aeroelastic response of aircraft structures offers a potential for significant payoffs in terms of aerodynamic efficiency and weight savings.
Abel, I., Newsom, J. R.
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US‐Japan Alliance: Emmeshing Bilateralism Into Broader Multilateralism
Asia &the Pacific Policy Studies, Volume 13, Issue 2, May 2026.ABSTRACT In the 21st Century, geopolitical confrontation between the Eurasian continental powers and the sea powers works to divide Asia. The US‐Japan alliance has transformed itself from Japanʼs asymmetrical security dependence of the Cold War period into a mutual and more integrated partnership today.
Yoichiro Sato
wiley +1 more source
Securing the High Ground: The Civil War Roots of Aerial Reconnaissance
, 2016 In this era of rapidly advancing technology, debate about aerial surveillance abounds. In March of this year, the Pentagon released its 2015 Inspector General report entitled “Evaluation of DoD’s Use of Unmanned Aircraft Systems (UAS) for Support to ...
Sawyer, Kaylyn L.
core
Health Prognostics in Multi‐Sensor Systems Based on Multivariate Functional Data Analysis
Applied Stochastic Models in Business and Industry, Volume 42, Issue 3, May/June 2026.ABSTRACT Recent developments in big data analysis, machine learning, Industry 4.0, and IoT applications have enabled the monitoring and processing of multi‐sensor data collected from systems, allowing for the prediction of the “Remaining Useful Life” (RUL) of system components.
Cevahir Yildirim +2 more
wiley +1 more source
Subterranean Mine Inspection Using the Prometheus Re‐Configurable Drone
Journal of Field Robotics, Volume 43, Issue 3, Page 1646-1660, May 2026.ABSTRACT This paper describes the design, development, and real‐world testing of an autonomous drone for subterranean exploration, known as “Prometheus.” Driven by requirements from industry that the drone be able to be deployed through areas of restricted access, Prometheus was designed to be directly deployed through a 150 mm aperture.
Liam Brown +8 more
wiley +1 more source
The design and fabrication of microstrip omnidirectional array antennas for aerospace applications [PDF]
A microstrip antenna design concept was developed that will provide quasi-omnidirectional radiation pattern characteristics about cylindrical and conical aerospace structures. L-band and S-band antenna arrays were designed, fabricated, and, in some cases,
Appleton, M. W. +2 more
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Systems Engineering, Volume 29, Issue 3, Page 387-405, May 2026.ABSTRACT Structural Complexity is perceived as driving cost in system development, yet managing it effectively requires empirical understanding. This study investigates human decision‐making using a toy transportation‐style network design task, focusing on how Structural Complexity, Effort, and Performance interact. Seventy‐four participants (primarily
Alfonso Lanza +3 more
wiley +1 more source