Results 11 to 20 of about 827,445 (334)

Three-Dimensional Flight Envelope for V/STOL Aircraft with Multiple Flight Modes

open access: yesAerospace, 2022
Vertical or short take-off and landing (V/STOL) aircraft generally have three flight modes, namely, vertical take-off and landing (VTOL), conversion, and cruise, according to the variable angle of propulsion direction to the fuselage axis.
Tielin Ma   +4 more
doaj   +1 more source

Fuzzy Comprehensive Evaluation of Pilot Cadets’ Flight Performance Based on G1 Method

open access: yesApplied Sciences, 2023
In this paper, to better evaluate the flight performance of pilot cadets, a flight performance evaluation index system was constructed based on the task of the traffic pattern, the flight training manual, and interviews with instructors.
Gen Li   +4 more
doaj   +1 more source

A Generalized Approach to Operational, Globally Optimal Aircraft Mission Performance Evaluation, with Application to Direct Lift Control

open access: yesAerospace, 2020
A unified approach to aircraft mission performance assessment is presented in this work. It provides a detailed and flexible formulation to simulate a complete commercial aviation mission.
Sam de Wringer   +2 more
doaj   +1 more source

Improved Quality Management of the Indian Meal Moth, Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) for Enhanced Efficacy of the Sterile Insect Technique

open access: yesInsects, 2023
The sterile insect technique (SIT) is considered an environmentally friendly, autocidal control tactic to manage insect pests. This work dealt with the improvement of quality management of the Indian meal moth Plodia interpunctella (Hübner) for enhanced ...
Md. Mahbub Hasan   +2 more
doaj   +1 more source

The Overall Design of Variable Diameter Ducted Fan in the Aircraft

open access: yesAerospace, 2022
Variable diameter rotor can improve the flight performance of the aircraft both in hovering and forward flying and a duct can improve the rotor performance further both in force and efficiency.
Yadong Gao, Yang Xu
doaj   +1 more source

Airplane tracking documents the fastest flight speeds recorded for bats [PDF]

open access: yesRoyal Society Open Science, 2016
The performance capabilities of flying animals reflect the interplay of biomechanical and physiological constraints and evolutionary innovation. Of the two extant groups of vertebrates that are capable of powered flight, birds are thought to fly more ...
Gary F. McCracken   +5 more
doaj   +1 more source

Flight Performance Aspects During Military Helicopter Flights

open access: yesAerospace Medicine and Human Performance, 2019
INTRODUCTION: A flight is composed of many flight performance aspects. However, not all of these aspects are equally important for the success and safety of a flight. When investigating the influence of a stressor on flight performance, it is important to understand not only which flight performance aspects are important for the success and the safety
Steinman, Yuval   +3 more
openaire   +2 more sources

Determination of representative loading conditions for effective semitrailer design

open access: yesTransport, 2014
Obtaining a representative loading spectrum that corresponds well to the reality is still one of the greatest challenges for fatigue life calculations and optimal design of the trailer body.
Karel Kural   +3 more
doaj   +1 more source

Resolution of a paradox: Hummingbird flight at high elevation does not come without a cost [PDF]

open access: yes, 2004
Flight at high elevation is energetically demanding because of parallel reductions in air density and oxygen availability. The hovering flight of hummingbirds is one of the most energetically expensive forms of animal locomotion, but hummingbirds are ...
Altshuler, Douglas L.   +2 more
core   +3 more sources

Model-Based Analysis of Lithium-Ion Battery Technology Predictions in Light-Sport Aircraft

open access: yesIEEE Access, 2022
A flight performance model was used to analyze the range capability of fully electric and hybrid-electric aircraft powertrains to determine their implementation feasibility compared to a similarly sized traditionally powered reference aircraft. Range was
Madeline McQueen   +3 more
doaj   +1 more source

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