Results 11 to 20 of about 147,710 (303)

Solving Multiple Fleet Airline Disruption Problems Using a Distributed-Computation Approach to Integer Programming

open access: yesIEEE Access, 2017
The execution of the airline operation is often deviated from the original schedule due to some unexpected disruptions, such as aircraft breakdowns and severe weather conditions. In this situation, a recovery plan is needed to get the irregular operation
Zhengtian Wu, Benchi Li, Chuangyin Dang
doaj   +1 more source

Energy recovery from landing aircraft [PDF]

open access: yes2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2012
This paper describes, the control strategy for energy recovery from landing aircraft. Energy from landing aircraft can be collected and changed to electrical power by using several power electronics devices. Each power electronics devices has their own control strategy, that will change from one type of input to other output.
openaire   +1 more source

Positioning and recovering of fixed-wing UAV using updating final-state control and adaptive nonstationary control

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2023
Descent deceleration using parachutes is widely used in the aerospace field for scenarios such as weather observation using the descent of high-altitude balloons (radiosondes), re-entry during space sample return, and emergency drone landings.
Susumu HARA, Mizuki HIRAI
doaj   +1 more source

A Vision-Based Method for Determining Aircraft State during Spin Recovery

open access: yesSensors, 2020
This article proposes a vision-based method of determining in which of the three states, defined in the spin recovery process, is an aircraft. The correct identification of this state is necessary to make the right decisions during the spin recovery ...
Tomasz Kapuscinski   +4 more
doaj   +1 more source

Microstructure evolution and properties of 7075 aluminum alloy recycled from scrap aircraft aluminum alloys

open access: yesJournal of Materials Research and Technology, 2022
A large quantity of scrap aircraft aluminum alloys in retired aircraft was used to produce cast aluminum alloys as raw material, resulting in a decrease of the value.
Rui Lin   +3 more
doaj   +1 more source

Analysis of the influence of the scheme of flight of the stage with a reactive recovry system on the energy characteristics of a two-stage medium class launch vehicle

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The paper presents various schemes of flight of a separated part of the first stage, equipped with the reactive recovery system taking a two-stage oxygen-kerosene medium class launch vehicle assembled on the basis of the results of ballistic design and ...
U. L. Kuznetsov, D. S. Ukraintsev
doaj   +1 more source

Potential Propulsive and Aerodynamic Benefits of a New Aircraft Concept: A Low-Speed Experimental Study

open access: yesAerospace, 2023
The aerodynamic design of a new aircraft concept was investigated through subsonic wind-tunnel testing using 1:28-scale powered models. The aircraft configuration integrates a box-wing layout with engines located at the rear part of the fuselage ...
Pedro D. Bravo-Mosquera   +2 more
doaj   +1 more source

Multi-objective optimization of carrier-based aircraft support personnel configuration

open access: yesZhongguo Jianchuan Yanjiu, 2021
Objectives Flight-deck support operations are the most critical link in the process of launch and recovery of carrier-based aircraft.The reasonable allocation of support personnel can enable to improve the capability of supporting the aircraft fleet ...
Jie YANG   +4 more
doaj   +1 more source

Application of dynamical systems theory to the high angle of attack dynamics of the F-14 [PDF]

open access: yes, 1990
Dynamical systems theory has been used to study the nonlinear dynamics of the F-14. An eight degree of freedom model that does not include the control system present in operational F-14's has been analyzed.
Culick, Fred E. C., Jahnke, Craig C.
core   +1 more source

Aircraft Upset Recovery Strategy and Pilot Assistance System Based on Reinforcement Learning

open access: yesAerospace
The upset state is an unexpected flight state, which is characterized by an unintentional deviation from normal operating parameters. It is difficult for the pilot to recover the aircraft from the upset state accurately and quickly.
Jin Wang   +5 more
doaj   +1 more source

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