Browsing Journal of Aerospace Engineering by Title
Now showing items 1354-1373 of 2238
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Nacelle Inlet Optimization at High Angles of Attack Based on the Ensemble Indicator Method
(ASCE, 2022-01-03)Inlet separation is one of the primary sources of distortion at fan entrances. High angles of attack (AOAs) are the critical cause of inlet separation. Optimizing the inlet shape to increase the separation angle is of great ... -
Nanosatellite Cluster Launch Collision Analysis
(American Society of Civil Engineers, 2013)Nanospacecraft are usually launched in clusters from a single launch, in which they are hosted as secondary payloads. The nanospacecraft, e.g., CubeSats, are usually released simultaneously in small groups from one single ... -
Nanoscale Weibull Statistics for Nanofibers and Nanotubes
(American Society of Civil Engineers, 2007)In this paper a modification of the classical Weibull statistics is applied to nanostructures. A comparison is presented of “nanoscale” versus classical Weibull statistics in treating recent experimental results on the ... -
NAO-1: Lunar Highland Soil Simulant Developed in China
(American Society of Civil Engineers, 2009)A new lunar highland soil simulant, NAO-1, has been created in National Astronomical Observatories (NAO), Chinese Academy of Sciences. This simulant was produced by gabbro, which includes large quantity of feldspar -
NASA Glenn Combustion Research for Aeronautical Propulsion
(American Society of Civil Engineers, 2013)NASA Glenn Research Center (GRC) has been involved in a wide range of combustion research topics in combustor concept research, component technology development, and enabling technology development to provide enabling ... -
NASA Glenn’s Contributions to Aircraft Engine Noise Research
(American Society of Civil Engineers, 2013)This paper reviews all engine noise research conducted at the National Aeronautics and Space Administration (NASA) Glenn Research Center over the last 70 years. The review includes a historical perspective of the center ... -
Natural Convective Flow of Nanofluids Past a Radiative and Impulsive Vertical Plate
(American Society of Civil Engineers, 2016)The time-dependent flow past an impulsively started vertical infinite isothermal plate in a viscous electrically conducting natural convective incompressible nanofluid is considered in this paper by taking into account the ... -
Natural Frequencies and Global Mode Functions for Flexible Jointed-Panel Structures
(ASCE, 2020)Deployable solar arrays play an important role in the realization of various spacecraft missions. Taking the flexible spacecraft as an application background, the natural characteristics of a jointed-panel structure is ... -
Natural Laminar Flow Optimization of Transonic Nacelle Based on Differential Evolution Algorithm
(American Society of Civil Engineers, 2019)Natural laminar flow (NLF) design is widely used to reduce skin friction drag to improve aircraft aerodynamic performance. In this paper, a differential evolution (DE) algorithm was applied to a NLF-designed transonic ... -
Natural Vibrations of Open-Variable Thickness Circular Cylindrical Shells in High Temperature Field
(American Society of Civil Engineers, 2010)The feasibility of using the transfer matrix method (TMM) to analyze open-variable thickness circular cylindrical shells exposed to a high-temperature field is explored theoretically. In the approach to the problem, the ... -
Near-Earth Object Threat Mitigation Using a Tethered Ballast Mass
(American Society of Civil Engineers, 2009)The effects of the collision of a near-earth object (NEO) with the Earth could be catastrophic on a local, regional, or global scale depending on the size of the NEO. Therefore, there is considerable interest in determining ... -
Negative External Pressure Coefficients for Design of Components and Cladding of Low-Rise Buildings with Steep-Slope Gable Roofs
(ASCE, 1/1/2021)Negative external pressure coefficients for design of components and cladding of steep-slope gable roofs (27° to 45° roof slope) on low-rise buildings subjected to wind loads were determined in this study based on data ... -
Negative Gaussian Curvature Cable Dome and Its Feasible Prestress Design
(American Society of Civil Engineers, 2016) -
Neighboring Optimal Guidance and Attitude Control of Low-Thrust Earth Orbit Transfers
(ASCE, 11/1/2020 )Recently, low-thrust propulsion is gaining strong interest from the research community and has already found application in some mission scenarios. This paper proposes an integrated guidance and control methodology, termed ... -
Net Annulus Flow of a Compressible Viscous Liquid with Peristalsis
(American Society of Civil Engineers, 2012)The axisymmetric peristaltic flow of a viscous compressible liquid through the gab between two coaxial tubes (annulus) was studied. This peristaltic flow is actually a result of the influence of ultrasonic radiation on the ... -
New Airfoil-Design Concept with Improved Aerodynamic Characteristics
(American Society of Civil Engineers, 1995) -
New Airfoil‐Design Concept with Improved Aerodynamic Characteristics
(American Society of Civil Engineers, 1994)The research in this paper is the result of an experimental study regarding a new airfoil‐design concept, which is developed to produce greater lift coefficients over a much broader range of operational angles of attack, ... -
New Approach to Mission Design Based on the Fundamental Equations of Motion
(American Society of Civil Engineers, 2006)The complexity of space missions has been steadily increasing as new missions are expected to be designed to fly under more and more stringent constraints. This paper shows the use of a new, simple methodology that is ... -
New Approach to Satellite Formation-Keeping: Exact Solution to the Full Nonlinear Problem
(American Society of Civil Engineers, 2009)This paper presents a new, simple, and exact solution to the formation keeping of satellites when the relative distance between the satellites is so large that the linearized relative equations of motion no longer hold. ... -
New Bird Model for Simulation of Bird Strike on Various Layups Used in Transparent Components of Rotorcrafts
(American Society of Civil Engineers, 2014)In this paper, a bird strike against a simple rectangular panel made of five different layups usually used in transparent parts of a rotorcraft is investigated. A new bird model is introduced and its results for impact on ...