Results 21 to 30 of about 33,063 (224)

Hierarchical optimization method of supersonic low sonic boom configuration

open access: yesHangkong gongcheng jinzhan, 2023
Sonic boom suppression is a key technology that must be broken through in the development of a new generation of supersonic civil aircraft. The reasonable design of configuration parameters can make the aircraft have good sonic boom characteristics.
MA Chuang   +4 more
doaj   +1 more source

Impact of a Thermally Stratified Energy Source Located in Front of a Pointed Cylinder Aerodynamic Model on the Pressure Signatures and PLdB Effect on the Ground

open access: yesApplied Sciences, 2023
The problem of noise reduction in supersonic aircraft design is one of the key problems, the solution of which largely determines the speed of development of supersonic aviation as a whole.
O. V. Kravchenko   +2 more
doaj   +1 more source

Aerodynamic Optimization Design of Supersonic Wing Based on Discrete Adjoint

open access: yesAerospace, 2023
Reducing fuel consumption and improving the economy by effectively reducing cruising drag is the main objective of the aerodynamic design of supersonic civil aircraft.
Hanyue Rao   +5 more
doaj   +1 more source

Research on Simulation and Performance Optimization of Mach 4 Civil Aircraft Propulsion Concept

open access: yesInternational Journal of Aerospace Engineering, 2019
Supersonic civil aircraft is of a promising area in the development of future civil transport, and aircraft propulsion system is one of the key issues which determine the success of the aircraft.
Min Chen   +5 more
doaj   +1 more source

Aerodynamic Analysis of a Supersonic Transport Aircraft at Landing Speed Conditions

open access: yesEnergies, 2021
Supersonic flight for commercial aviation is gaining a renewed interest, especially for business aviation, which demands the reduction of flight times for transcontinental routes.
Andrea Aprovitola   +3 more
doaj   +1 more source

Chemistry in plumes of high-flying aircraft with H2 combustion engines: a modelling study [PDF]

open access: yesAnnales Geophysicae, 1994
Recent discussions on high-speed civil transport (HSCT) systems have renewed the interest in the chemistry of supersonic-aircraft plumes. The engines of these aircraft emit large concentrations of radicals like O, H, OH, and NO.
G. Weibring, R. Zellner
doaj   +1 more source

Design of a low frequency, impulsive sound simulator in an existing house for sonic boom perceptual studies

open access: yesActa Acustica, 2023
The renewal of civil supersonic aviation is partly conditioned by the establishment of an international regulation on sonic boom level. Human perception of booms from future aircraft creating sound disturbances of lower level than past ones can currently
Cretagne Léo   +7 more
doaj   +1 more source

Modern problems of aircraft aerodynamics

open access: yesAdvances in Aerodynamics, 2019
The article represents the discussion of several separate directions of investigations, which are performed by TsAGI flight vehicles aerodynamics specialists at the time.
Sergey L. Chernyshev   +2 more
doaj   +1 more source

Integrated Flight Control System Characterization Approach for Civil High-Speed Vehicles in Conceptual Design

open access: yesAerospace, 2023
Recent studies have revealed that control surface deflection can cause a reduction in the aerodynamic efficiency of a hypersonic aircraft of up to 30%.
Davide Ferretto   +3 more
doaj   +1 more source

The jet fuels anti-wear properties indicator

open access: yesНаучный вестник МГТУ ГА, 2021
There are three main fuel brands for jet engines of civil aviation used: domestic TS-1 and RT and foreign, produced in relatively small volumes in Russia, JET A-1 (JET A-1).
K. I. Gryadunov   +3 more
doaj   +1 more source

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