High fidelity aerodynamic optimization in distributed overall aircraft design

Gu, Xiangyu; Ciampa, Pier Davide; Nagel, Björn

doi:10.2514/6.2016-3508

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…It should be noted that the authors of papers [19,20] consider the layout within the entire aircraft structure aerodynamics. When the tasks of local aerodynamics and various design issues are tackled, the engines themselves, the elements of wing mechanization, the end sections of the wing are often considered in isolation from the overall layout.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Selecting the mutual arrangement of the engine and wing in a transport aircraft for short take-off and landing

Kudryavtsev¹,

Strigun²,

Shmyrov³

et al. 2020

EEJET

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In order to maintain the competitive advantage of the medium short takeoff and landing transport aircraft, the task must be solved of ensuring takeoff and landing on the ground runways with a length of 600-800 m when installing a turbojet engine. When the engines are installed on the pylons under the wing, this is achieved by using a «forced» turn of the jet of engines when the flaps are released at an angle of 60°. We have found the mutual location of the wing and the engine on its stagger, based on the position relative to the construction plane of the wing and the angle of installation. A reciprocal arrangement has been determined, making it possible to maximize the lift force owing to the turn of the jet stream. It has been shown that this achieves the continuous flow around the sections of the flaps when they are deflected at a 60-degree angle. We have analyzed the temperature effect of the jet stream on the mechanization and the aircraft wing at the stages of takeoff and landing at different positions of engines under the wing, at different flight speeds and angles of attack. The effect of mechanization on the distribution of jet stream speeds and temperatures has been analyzed. It is shown that decreasing the distance between the engine nozzle and the lower surface of the wing leads to an increase in the angle of the jet stream deviation. We have identified those tail section zones of the flap, which require special execution to operate at temperatures above 400 °C. The impact of the jet stream on aircraft's drag in the cruising configuration has been analyzed, as well as the scheme of engine arrangement on the aircraft's electrically dependent systems. We have shown the absence of the impact of the jet stream on the aircraft's drag in the cruising configuration, the reduction of fuel consumption at cruising modes, as well as the favorable impact exerted on the electrically dependent systems due to the significant reduction of gas-dynamic losses along the power plant tract. Ways to modernize the transport aircraft type of An-70 have been proposed to ensure its superiority in its class

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Selecting the mutual arrangement of the engine and wing in a transport aircraft for short take-off and landing

Kudryavtsev¹,

Strigun²,

Shmyrov³

et al. 2020

EEJET

View full text Add to dashboard Cite

show abstract

“…Regarding propulsion, several studies are dedicated to the analysis and design of new types of engines, alternative to the conventional internal combustion one, such as hybrid and electrical powertrains [12][13][14][15][16][17]; also, alternative energy sources to fossil fuels, such as hydrogen [18][19][20][21] or biofuels [22][23][24], are currently under study. Regarding aircraft development, studies have been conducted on the optimisation of the tube-and-wing aircraft to reach the maximum potential of the conventional configuration [25][26][27][28], but great effort is currently dedicated to the study and development of new unconventional architectures [29][30][31][32][33][34], such as the blended wing-body configuration [35][36][37] or the joined wings architecture [38,39], which may represent a real breakthrough in aircraft evolution.…”

Section: Introductionmentioning

confidence: 99%

A Physics-Based Multidisciplinary Approach for the Preliminary Design and Performance Analysis of a Medium Range Aircraft with Box-Wing Architecture

et al. 2021

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The introduction of disruptive innovations in the transport aviation sector is becoming increasingly necessary. This is because there are many very demanding challenges that the transport aviation system will have to face in the years ahead. In particular, the reduction in pollutant emissions from air transport, and its impact on climate change, clearly must be addressed; moreover, sustainable solutions must be found to meet the constantly increasing demand for air traffic, and to reduce the problem of airport saturation at the same time. These three objectives seem to be in strong contrast with each other; in this paper, the introduction of a disruptive airframe configuration, called PrandtlPlane and based on a box-wing lifting system, is proposed as a solution to face these three challenges. This configuration is a more aerodynamically efficient alternative candidate to conventional aircraft, introducing benefits in terms of fuel consumption and providing the possibility to increase the payload without enlarging the overall aircraft wingspan. The development and analysis of this configuration, applied to a short-to-medium range transport aircraft, is carried out through a multi-fidelity physics-based approach. In particular, following an extensive design activity, the aerodynamic performance in different operating conditions is investigated in detail, the structural behaviour of the lifting system is assessed, and the operating missions of the aircraft are simulated. The same analysis methodologies are used to evaluate the performance of a benchmark aircraft with conventional architecture, with the aim of making direct comparisons with the box-wing aircraft and quantifying the performance differences between the two configurations. Namely, the CeRAS CSR-01, an open-access virtual representation of an A320-like aircraft, is selected as the conventional benchmark. Following such a comparative approach, the paper provides an assessment of the potential benefits of box-wing aircraft in terms of fuel consumption reduction and increase in payload capability. In particular, an increase in payload capability of 66% and a reduction in block fuel per pax km up to 22% is achieved for the PrandtlPlane with respect to the conventional benchmark, while maintaining the same maximum wingspan.

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Aeroelastic Shape and Sizing Optimization of Aircraft Products supported by AGILE Design Paradigm

Daoud

2017

18th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference

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High fidelity aerodynamic optimization in distributed overall aircraft design

Cited by 4 publications

References 7 publications

Selecting the mutual arrangement of the engine and wing in a transport aircraft for short take-off and landing

Selecting the mutual arrangement of the engine and wing in a transport aircraft for short take-off and landing

A Physics-Based Multidisciplinary Approach for the Preliminary Design and Performance Analysis of a Medium Range Aircraft with Box-Wing Architecture

Aeroelastic Shape and Sizing Optimization of Aircraft Products supported by AGILE Design Paradigm

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