Results 81 to 90 of about 490,773 (280)

Future aviation fuels overview [PDF]

open access: yes, 1980
The outlook for aviation fuels through the turn of the century is briefly discussed and the general objectives of the NASA Lewis Alternative Aviation Fuels Research Project are outlined.
Reck, G. M.
core   +1 more source

Boltzmann and the art of flying

open access: yes, 2007
One of the less known facets of Ludwig Boltzmann was that of an advocate of Aviation, one of the most challenging technological problems of his times. Boltzmann followed closely the studies of pioneers like Otto Lilienthal in Berlin, and during a lecture
Dahmen, Silvio R.
core   +1 more source

Pancake Lenses through Curved Lamination for Compact Virtual Reality

open access: yesAdvanced Intelligent Systems, EarlyView.
This article presents an ultrathin VR optical system based on a 1.35 in. microdisplay, leveraging curved lamination technology. Compared to mainstream solutions, the proposed design demonstrates superior compactness (volume compression by 12%) and enhanced optical performance.
Jiaping Sun   +5 more
wiley   +1 more source

Smart wireless low power valve positioner dedicated for use in aviation laboratories

open access: yesAviation
Testing aircraft components in laboratories is crucial phase of developing new technologies in aviation. Component testing helps to find design mistakes or check durability and efficiency, which increase safety.
Tomasz Kabala, Jerzy Weremczuk
doaj   +1 more source

Design Challenges to Expand the Functionality of Drones: Deformable Rotorcraft and Nature‐Inspired Flapping Drones

open access: yesAdvanced Intelligent Systems, EarlyView.
This review systematically analyzes deformable drones, including extendable, foldable, and tilting configurations, along with nature‐inspired flapping rotorcraft. By classifying deformation principles and structural mechanisms, design trade‐offs, functional capabilities, and future development potential are highlighted.
Ju‐Hee Lee   +9 more
wiley   +1 more source

How to AH1 helicopter support in hybrid warfare [PDF]

open access: yesعلوم و فنون نظامی, 2018
: In the present study how to support of Cobra in the hybrid war. The variables influencing the research consists of update 3 class Logistics and update 5 class Logistics and maintenance.
Majeed Rajabpour   +2 more
doaj  

Economics of land‐based carbon mitigation

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Agricultural land holds tremendous potential to contribute to net zero greenhouse gas emission goals by providing low carbon renewable energy to displace fossil fuels and by serving as a sink for sequestering carbon in the soil with climate‐smart practices. This potential is, however, far from being realized.
Madhu Khanna
wiley   +1 more source

Extended reality technologies in higher education

open access: yesНаучный вестник МГТУ ГА
In the last few years, the topic of extended (i.e. virtual or augmented) reality in education has become so popular among researchers that it creates problems when preparing reviews of papers on the topic: a search of Scopus and Web of Science databases ...
A. L. Gorbunov
doaj   +1 more source

Retrospective studies of operating problems in air transport [PDF]

open access: yes
An epidemiological model for the study of human errors in aviation is presented. In this approach, retrospective data are used as the basis for formulation of hypotheses as to system factors which may have contributed to such errors.
Billings, C. E.   +3 more
core   +1 more source

Aviation Forecasting in ICAO [PDF]

open access: yes, 1972
Opinions or plans of qualified experts in the field are used for forecasting future requirements for air navigational facilities and services of international civil aviation. ICAO periodically collects information from Stators and operates on anticipated
Mcmahon, J.
core   +1 more source

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