Propulsion and aerodynamic performance evaluation of jet-wing distributed propulsion

Schetz, Joseph A.; Hosder, Serhat; Dippold, Vance F.; Walker, J. N.

doi:10.1016/j.ast.2009.06.010

Cited by 18 publications

(10 citation statements)

References 8 publications

(11 reference statements)

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“…11 The concept of propulsion-airframe integration to reduce aircraft fuel burn and noise and to achieve shorter takeoffs and landings has gained popularity in recent years; many studies have shown significant benefits of synergistic airframe-propulsion design. [12][13][14][15] The aircraft concepts in these studies achieve this synergy through distributed propulsion, which can be defined as "the spanwise distribution of the propulsive thrust stream such that overall vehicle benefits in terms of aerodynamic, propulsive, structural, and/or other efficiencies are mutually maximized to enhance the vehicle mission". 16 Although the idea of distributed propulsion is far from new, few aircraft have incorporated distributed propulsion with synergistic airframe-propulsion system integration.…”

Section: B Integrated Distributed Propulsionmentioning

confidence: 99%

Conceptual Design of Electric Aircraft with Distributed Propellers: Multidisciplinary Analysis Needs and Aerodynamic Modeling Development

Patterson

German

2014

52nd Aerospace Sciences Meeting

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In this paper we describe the technical analysis capabilities necessary to perform conceptual design studies of small aircraft concepts that employ distributed propeller electric propulsion systems. These new aircraft concepts may achieve higher aerodynamic efficiency than conventional designs through the synergistic interaction between propellers and the wing. Consequentially, one of the most crucial components of the analysis is an aerodynamic model capable of analyzing the propellers' influence on the wing and the wing's influence on the propellers. We have implemented a vortex lattice model capable of capturing this mutual influence and reduced the computational run time of the model by employing graphics processing units. This aerodynamic analysis will form the basis of a multidisciplinary design, analysis, and optimization framework that will be used to perform conceptual design studies of these configurations.

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Section: B Integrated Distributed Propulsionmentioning

confidence: 99%

Conceptual Design of Electric Aircraft with Distributed Propellers: Multidisciplinary Analysis Needs and Aerodynamic Modeling Development

Patterson

German

2014

52nd Aerospace Sciences Meeting

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“…This configuration incorporates the propulsion system by burying the engines in the wing and letting the engines exhaust out the trailing edge (Ko et al, 2003). Later, under the term "distributed propulsion", various similar concepts were proposed which involve engines distributed in the wingspan or engines, or fans, embedded in the wing exhausting through ducts along the entire trailing edge of the wing (Leifsson et al, 2005;Kim et al, 2006;Schetz et al, 2010;Gohardani, 2013;Isikveren et al, 2014). Most distributed propulsion concepts were related to propulsion efficiency, especially those with boundary layer ingestion and wake filling (Smith & Roberts, 1947;Smith, 1993;Arntz & Atinault, 2015;Lv et al, 2016;Hall et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

A Laminar Flow, Propulsive, Jet-Flapped Concept for Electrically Powered Transport Aircraft

Kehayas

2023

Aviation

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Friction drag constitutes approximately half of the total drag of subsonic civil transport aircraft at cruise conditions. Several means were examined to control the flow over an aircraft and achieve laminar flow. Here, a new concept for friction drag reduction in the form of an integration of the aerodynamics and propulsion of the aircraft is put forward. Engines buried in the wing and at the rear of the fuselage suck the boundary layer of the entire wing and fuselage surface, and then, they used it as intake air and exhaust through ducts. At the wings, the engines exhaust in the form of a jet flap at the trailing edge providing distributed propulsion. By this laminar flow, propulsive concept laminar flow is established over the entire aircraft, resulting in substantial drag reduction. The analysis showed that out of the four electrically powered aircraft versions considered only the combined lift distribution with tailless fuselage is about to be feasible. It was also found that the example aircraft design is inappropriate. It is expected that a design purposely based on the proposed concept would bring electrically powered transport aircraft within the specific energy levels of present batteries.

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“…11 Based on the above two configurations, extensive researches on DPC have been carried out to demonstrate the advanced designs, performance improvement, practicality, and potentiality of the distributed propulsion system. [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] As the important feature of DPC, BLI effect and the aerodynamic performance of a propulsion system were investigated by Plas. 29 A quantitative experiment on the ''silent aircraft'' showed that fuel consumption can be reduced by 3.8% due to the BLI effect.…”

Section: Introductionmentioning

confidence: 99%

Integrated flight/propulsion optimal control for DPC aircraft based on the GA-RPS algorithm

Zhang

Kang

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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The new distributed propulsion configuration (DPC) can effectively improve fuel efficiency and reduce pollution, but also brings in special cross-coupling effects between the flight and propulsion systems. To tackle this problem, integrated flight/propulsion modeling and optimal control of DPC with boundary layer ingestion (BLI) and supercirculation features are systematically investigated. As the basis, by taking the inherent BLI and supercirculation features into consideration, an integrated flight/propulsion model of SAX-40 is built to reflect the actual complex engine-aircraft coupling effects. Then an integrated flight/propulsion optimal control scheme is proposed to deal with the strong coupling effects and to implement the comprehensive control of redundant control surfaces as well as the distributed engines. Under this scheme, a detailed description of the optimal control problem is presented, and a novel two-stage optimization algorithm named genetic algorithm-random pattern search (GA-RPS) is proposed to solve this complex optimal problem. By the new strategies of ''parallel genetic algorithm computing in sub-regions'' and ''random pattern search'' in the GA-RPS algorithm, the optimization accuracy and convergence speed are effectively improved. Simulation results demonstrate the effectiveness of the GA-RPS algorithm and the significant performance improvement to DPC by optimization.

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Propulsion and aerodynamic performance evaluation of jet-wing distributed propulsion

Cited by 18 publications

References 8 publications

Conceptual Design of Electric Aircraft with Distributed Propellers: Multidisciplinary Analysis Needs and Aerodynamic Modeling Development

Conceptual Design of Electric Aircraft with Distributed Propellers: Multidisciplinary Analysis Needs and Aerodynamic Modeling Development

A Laminar Flow, Propulsive, Jet-Flapped Concept for Electrically Powered Transport Aircraft

Integrated flight/propulsion optimal control for DPC aircraft based on the GA-RPS algorithm

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