Showing papers in "Progress in Aerospace Sciences in 2020"

TL;DR: A review of fundamental research in combustion stabilization for hypersonic airbreathing propulsion is presented in this paper, which outlines both experimental and numerical research progress made towards combustion stabilization over the entire hypheratic regime, and intended to lay the groundwork for further studies which can provide optimized design guidelines for the next generation of high-speed air-to-air propulsion systems.

TL;DR: This paper aims to promote the practical application of the AOSC system which could facilitate the development of the energy-optimized green air/space vehicle.

TL;DR: A review of the research progress made on the active thermal protection method for air-breathing hypersonic vehicles in recent decades is presented in this paper, which mainly covers the fundamental problems and recent advances, including regenerative cooling, film cooling, transpiration cooling and combined cooling.

TL;DR: The topics covered include the operating principles and characteristics of three typical FCs, issues faced by FC-powered UAVs, specific roles of other electric power sources, pure electric hybrid constructions of FC hybrid propulsion systems, hybrid engine-electric FC hybrid propelled systems, potential impacts of various flight factors, energy management strategies, and similarities/differences of FC hybrids in other vehicle applications.

TL;DR: The hybridization of Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation (LES) methods is seen to be the most promising way to efficiently deal with separated turbulent flow simulations relevant to aerospace and wind energy applications.

TL;DR: In this article, the authors present an overview and analysis of the various aspects of hypersonic ground testing, including simulation requirements according to the different flow regimes of Hypersonic flight.

TL;DR: This work reviews the nature of multimode propulsion, mission analyses, benefits, and specific multimode concepts, and reviews the most recent attention to Electrospray electric propulsion paired with monopropellant chemical propulsion.

TL;DR: A comprehensive survey on the field of forebody shock control devices is presented in this article, where the authors categorize the various forebody shocks control devices in a physics-based manner, explains the underlying physics for each device, and surveys the key studies and state-of-the-art knowledge.

TL;DR: In this article, the authors present a systematic literature review on crashworthy design and energy absorption mechanisms for helicopter structures, including landing gear, subfloor, full-scale airframe, helicopter crashworthy seats, fuel tank and helicopter blade.

TL;DR: A critical review of AI-based methods and their application to sUAS navigation is conducted, along with an assessment of the performance benefits they provide over conventional navigation systems, including aspects such as system architecture, sensing modalities and data-fusion algorithms.

TL;DR: This paper reviews the different configurations, flight mechanisms, and applications of UASs, and divides them into four main categories, including Horizontal Takeoff and Landing (HTOL), Vertical Take off and landing (VTOL), Hybrid, and Bio-Based drones.

TL;DR: A review of the evolutionary advancement of the lattice Boltzmann methods (LBM) and current status of their applications in dealing with diverse flow problems such as advection-diffusion, forced convection, conjugate heat transfer, radiative heat transfer and thermal jet flows is presented in this paper.

TL;DR: This paper reviews and classifiesWide-speed-range waverider design methodologies developed up until 2019, including the “combined” wide-speed range waveriders, the variable Mach number waveriding, the vortex lift waverIDER, the dual/multistage waveride, the morphing waverided, and some other wide- speed-range Waverider designs.

TL;DR: In this paper, a review summarizes the recent investigations on nonclassical transonic aeroelastic problems, including transonic buzz, reduction of transonic buffet onset, transonic buffeting response and frequency lock-in phenomenon in transonicbuffet flow.

TL;DR: A bibliographical review of technologies for landing gear noise reduction, taking the Technology Readiness Level (TRL) into consideration, is presented.

TL;DR: The higher level of interaction and the increased mutual sensitivity of engine operation and wing flow field suggest the need to elaborate closely coupled methods to correctly replicate these effects and an assessment of current wind tunnel practices for the design and operation of powered engine simulators.

TL;DR: A historical review of on-board modelling applied on gas turbine engines is offered and its limitations, and consequently the challenges, which should be addressed to apply the on- board real time model to new and the next generation gas turbine aero-engines are established.

TL;DR: In this paper, a distinction was introduced between physical and scattering kernel theory-based gas-surface interaction models, and the most popular models have been selected and reviewed using as discriminating factors relevance with regards to orbital aerodynamics applications and theoretical agreement with gas-beam experimental data.

TL;DR: The AGILE technologies enabled the consortium to formulate and to solve in 15 months 7 MDO applications in parallel for the development of 7 novel aircraft configurations, demonstrating time savings beyond the 40% goal.

TL;DR: In this paper, a review of the diagnostic methodologies used in hypersonic test facilities associated with the working principles, the development, the potential and the limitations of arc jet plasma wind tunnels for the evaluation of the aforementioned critical parameters is presented.

TL;DR: Research applicable to trajectory prediction throughout the trajectory prediction process is reviewed, differences in decision-making structures are addressed, and trajectory synchronization research applicable to TBO is considered.

TL;DR: In this paper, a comprehensive review and analysis of the benefits to spacecraft operations in very low Earth orbits (VLEO), with parametric investigation of those which apply specifically to Earth observation missions, is presented.

TL;DR: In this article, a review of hypersonic low-density wind-tunnel experiments is presented, with their own simulations, unexploited afterbody heating data from former space programs such as Mercury and Apollo.

TL;DR: In this paper, a building block approach is recommended with several levels, i.e. coupons - elements - details - sub-components - components - full-scale aircraft.

TL;DR: A comprehensive and systematical review of the research progress on the inlets for RBCC engines in different countries and different historical periods is presented in this paper, where a number of key technical and scientific issues are sorted out, including inlet design and optimization, inlet/embedded rocket/combustor matching and control, dynamic operation, etc.

TL;DR: Qualitative investigations performed in research activities in the field of Multi-disciplinary Design and Optimization (MDO) for overall aircraft design in the EU funded research project AGILE are presented.

TL;DR: In this paper, the authors summarized the progress of research work carried out since the 1960s till date, and described the types of balloon missions planned & executed, choice of lifting gases & selection criteria for materials used for envelope construction.

TL;DR: In this paper, the possibilities of the Inter-stage Turbine Burner (ITB) configuration for both aviation and power generation with a view on sustainability and fuel flexibility are discussed.

TL;DR: This paper focuses on the Collaborative Architecture, which at its turn formalizes the way in which the involved agents interact within the product development process and enables cross-organizational and cross-the-nation integration of design competences.

TL;DR: A description of the knowledge architecture as a generalized paradigm to formulate collaborative and distributed MDO systems, and the specific implementation of such a paradigm within the AGILE project is illustrated: four knowledge architecture applications and two data schemas are described in detail.