Results 71 to 80 of about 457,397 (165)

Aerodynamic optimization design of aircraft at maneuver points based on discrete adjoint equations

open access: yesKongqi donglixue xuebao
Modern supersonic aircraft with low aspect ratio must achieve favorable subsonic and supersonic cruise efficiency and high maneuverability. However, conventional aerodynamic optimization has primarily focused on cruise lift-to-drag characteristics, with ...
Qisheng Chen   +5 more
doaj   +1 more source

Computation of Variable Noise Reduction System Efficiency for Supersonic Civil Aircraft During Takeoff

open access: yesApplied Sciences
The noise of next-generation supersonic civil aircraft can become a significant nuisance for the population in the vicinity of airports. This study investigates the efficiency of the noise control approach for a notional supersonic civil aircraft at ...
Victor Kopiev   +2 more
doaj   +1 more source

Impact of Supersonic Aircraft on Upper Layers of (Atmosphere) Stratosphere

open access: yesPromet (Zagreb), 2012
Recent scientific research have continued to assume thataircraft may contribute to the adverse chemical changes in theglobal atmosphere, especially regarding ozone (03) depletionas well as in possible changes in climate.Howeve1; there is substantial ...
Jasna Golubić   +2 more
doaj   +1 more source

Achieving global range in future subsonic and supersonic airplanes

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace, 2014
No commercial airplane in service today is able to fly half great-circle distances over the globe and achieve the non-stop or the global range to any antipodal location on Earth.
Nihad E Daidzic
doaj   +1 more source

Integrating Computer-Aided Design and Model-Based Systems Engineering for Early Zonal Hazard Analysis: Application to a Supersonic Aircraft Fuel System

open access: yesAerospace
The development of supersonic aircraft presents significant challenges in ensuring safety during early design stages, particularly for fuel tank systems exposed to extreme thermal and structural loads.
Ayush Kamboj, Yicheng Sun
doaj   +1 more source

Do supersonic aircraft avoid contrails? [PDF]

open access: yesAtmospheric Chemistry and Physics, 2008
The impact of a potential future fleet of supersonic aircraft on contrail coverage and contrail radiative forcing is investigated by means of simulations with the general circulation model ECHAM4.L39(DLR) including a contrail parameterization.
A. Stenke, V. Grewe, S. Pechtl
doaj  

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

Installation Effects of Supersonic Inlets on Next-Generation SST Turbofan Engines

open access: yesEngineering Proceedings
This study explores inlet-related installation effects on next-generation SST aircraft, focusing on supersonic business jets. Using a comprehensive framework with consistent thrust/drag bookkeeping and realistic modeling of inlet losses, including ...
Stylianos Adamidis   +4 more
doaj   +1 more source

Optimal design for low sonic boom based on CoKriging surrogate model

open access: yesHangkong gongcheng jinzhan
Accurately predicting and effectively reducing sonic boom levels is one of the key issues in the development of the new generation of green supersonic civil aircraft.
ZHANG Hanqi, XU Yue, ZHONG Min, LI Yan
doaj   +1 more source

Aerodynamic model identification of supersonic aircraft using Bayesian approach-based Box–Jenkins structure

open access: yesAlexandria Engineering Journal
Nonlinear aerodynamics complexities of trending supersonic fighter aircraft entail formulation of a robust and reliable System Identification (Sys ID) technique that is capable of giving deep insight into its nonlinear characteristics and being self ...
Muhammad Fawad Mazhar   +6 more
doaj   +1 more source

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