Results 191 to 200 of about 226,378 (280)

NASA/HAA Advanced Rotorcraft Technology and Tilt Rotor Workshop. Volume 7: Tilt Rotor Session [PDF]

The technical characteristics of the XV-15 aircraft were discussed. Program objectives, concept evaluation, tilt rotor experiments and civil market applications are presented.

core   +1 more source

Review of High‐Speed Digital Image Correlation: Advancements and Good Practices

Strain, Volume 61, Issue 6, December 2025.
This review synthesizes advances in high‐speed (HS) and ultra‐high‐speed (UHS) digital image correlation (DIC) across more than 150 studies. Key developments include camera innovations, refined image processing, and experimental strategies that enable unprecedented temporal and spatial resolution of dynamic events.
A. Arrington, A. Westra, P. Jannotti, P. Reu, L. Lamberson   +4 more
wiley   +1 more source

Maintenance cost study of rotary wing aircraft, phase 2 [PDF]

The Navy's maintenance and materials management data base was used in a study to determine the feasibility of predicting unscheduled maintenance costs for the dynamic systems of military rotary wing aircraft.

core   +1 more source

Modeling of Methyl Hydroperoxide Observations in Urban and Remote Air Over South Korea: Methylperoxy Radical Chemistry and Inference of Atmospheric Methanediol

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Methyl hydroperoxide (MHP) is produced by the CH3O2 + HO2 reaction in the oxidation cascade of volatile organic compounds (VOCs). During KORUS‐AQ (May–June 2016), aircraft observations over Seoul using chemical ionization mass spectrometry reported MHP concentrations exceeding 1 ppb in the planetary boundary layer, four times higher than ...
L. H. Yang, D. J. Jacob, K. H. Bates, H. Lin, H. M. Allen, J.‐F. Müller, S. S. Brown, R. Dang, N. K. Colombi, S. Zhai, R. M. Yantosca, J. F. Brewer, N. L. Ng, J. D. Crounse, P. O. Wennberg, K. Li, H. Liao   +16 more
wiley   +1 more source

A Review of In-Flight Thermal Comfort and Air Quality Status in Civil Aircraft Cabin Environments

Shanran Wang, Xiaodong Cao, Dan Miao, Liping Pang, Jiayu Li   +4 more
openalex   +1 more source

Dynamic Pulse Buckling of Composite Stanchions in the Sub-Cargo Floor Area of a Civil Regional Aircraft [PDF]

, 2020
Andrea Sellitto, Francesco Di Caprio, Michele Guida, Salvatore Saputo, Aniello Riccio   +4 more
openalex   +1 more source

Multiple-Purpose Subsonic Naval Aircraft (MPSNA) Multiple Application Propfan Study (MAPS) [PDF]

A conceptual design study compared a selected propfan-powered aircraft to a turbofan-powered aircraft for multiple Navy carrier-based support missions in the 1995 timeframe. Conventional takeoff and landing (CTOL) propfan and turbofan-powered designs and
Mayrand, C. H., Winkeljohn, D. M.
core   +1 more source

Global Simulations Suggest Biomass Burning Aerosol Emissions From Grassland Fires Could Be Important Ice Nucleating Particles

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 22, 28 November 2025.
Abstract Ice nucleating particles (INP) capable of nucleating ice crystals via immersion freezing at temperatures above approximately −35°C may strongly influence cloud glaciation, with implications for global precipitation and climate feedback. In addition to mineral dust, soil dust, and marine organics, laboratory and field measurements suggest ...
Kanishk Gohil, Noah Asch, Ryan Sullivan, Paul J. DeMott, Hamish Gordon   +4 more
wiley   +1 more source

Fault diagnosis using ISMA to optimize SVM parameters for aircraft engine damage repair. [PDF]

Sci Rep
Xue P, Yu J, Zhang H.
europepmc   +1 more source