Engines in nacelles on a Boeing 707. A nacelle (/ n ə ˈ s ɛ l / nə-SEL) is a streamlined container for aircraft parts such as engines, fuel or equipment. [1] When attached entirely outside the airframe, it is sometimes called a pod, in which case it is attached with a pylon or strut and the engine is known as a podded engine. [2]

Nacelles (sometimes called “pods”) are streamlined enclosures used primarily to house the engine and its components. They usually present a round or elliptical profile to the wind thus reducing aerodynamic drag.

In this study, aerodynamic interference effect between a nacelle and a wing is optimized through the modification of nacelle, wing, and pylon shapes. The Kriging model is adopted to build an approximation model of the objective functions to reduce the large computational burden demanded by a stochastic optimization method coupled with 3D high ...

The paper examines the design and optimization of aircraft nacelles, focusing on key aspects such as external shape, inlet geometry, and integration with various aircraft components. It highlights the importance of achieving optimal aerodynamic performance and efficiency by carefully considering factors like contour shapes, scaling relations ...

2013年8月1日 · The optimization system is used for optimizing the nacelle location of DLR-F6 wing-body-pylon-nacelle. The results indicate that the aerodynamic interference between the parts is significantly reduced.

2013年3月3日 · Thanks to the context of this study, we have the opportunity to use not only a relatively sophisticated finite element model of the engine (several hundred thousands DoF) but also preliminary sizing models for pylon and nacelle. The two main criteria investigated are Weight minimization of pylon-engine-nacelle assembly. SFC minimization of the ...

2022年8月1日 · Recent studies revealed that the leading-edge slat in realistic high-lift aircraft configurations forms a more complex nacelle/pylon vortex system, resulting in an intense noise source. Thus, this study investigated the noise characteristics of leading-edge slats in realistic aircraft configurations based on phased microphone arrays.

configurations with various combinations of pods, pylons, nacelles, and winglets can be analyzed along with simpler shapes such as airfoils, isolated wings, and isolated bodies. The flexibility required for the treatment of such diverse geometries is obtained by using a multiple nested grid approach in the finite difference relaxation scheme.

In this paper the impact of pylon and nacelle design parameters on in-operation engine performance and overall mass is investigated for a turbofan engine.

2021年5月12日 · The main objective of this study is to investigate the nacelle/pylon vortex system developed on the CRM-HL model at high angles of attack. The nacelle/pylon vortex system interacts with the flow over the wing and reduces the lift performance of the CRM-HL model by triggering flow separation over the inboard wing.