Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 48
Book Description
Study of the TRAC Airfoil Table Computational System
Author: NASA Langley Scientific and Technical Information Output: 1999
Author: Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1144
Book Description
An Airfoil Table Computational Package Using the Navier-Stokes Method
Author: Danny Tyrone BarnesPublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 116
Book Description
Computational Study of the High-lift A-airfoil
Author: Adam JirasekComputation and Construction of the Active Elevon Rotor Standard Airfoil Performance Tables
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Active Elevon Rotor (AER) system is being developed and evaluated by the Army and NASA at Ames Research Center, Moffett Field, CA. The conceptual and preliminary design of this system requires computational fluid dynamics (CFD). This could also be achieved with the use of a wind tunnel but that would be much more time consuming and costly. Three dimensional methods do exist, but two dimensional methods are all that are required for preliminary design. This study's method entails the creation of airfoil aerodynamic performance tables. These tables list the force and moment characteristics of the airfoil as a function of angle of attack for a given Reynolds and Mach number. Because this is an active elevon system the geometry of the airfoil varies. The airfoil is the VR18 airfoil with the elevon being represented by a fifteen percent chord flap. The deflections are from negative ten degrees to plus ten degrees in increments of one degree. This means twenty-one geometries and tables in total. The airfoil tables are in the Standard format and include lift, drag, and pitching moment for the entire airfoil and the flap alone. The calculations of these coefficients are being performed with the use of a Reynolds-averaged Navier-Stokes flow solver called ARC2D, which was developed by Pulliam and Steger at the NASA Ames Research Center. The airfoil tables in this study have a Mach number range of 0.3 to 0.875, and the complete -180 to +180 degree angle of attack range. With all these variations, the total number of simulation cases for this study is 7,852. These cases were all computed on the NASA supercomputer Columbia at Ames Research Center.
A Computational Study on Stationary and Oscillatory Circular Arc Airfoil Aerodynamics
Author: Negin SattariPublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 164
Book Description
Scientific and Technical Aerospace Reports
Author: Technical Reports Awareness Circular : TRAC.
Author: Flight Stability and Automatic Control
Author: Robert C. NelsonPublisher: WCB/McGraw-Hill
ISBN: 9780071158381
Category : Aerodynamique / Aeronautique / Aerospatial / Automatique / Avion / Commande / Conception / Controle / Navigation / Stabilite
Languages : en
Pages : 441
Book Description
The second edition of Flight Stability and Automatic Control presents an organized introduction to the useful and relevant topics necessary for a flight stability and controls course. Not only is this text presented at the appropriate mathematical level, it also features standard terminology and nomenclature, along with expanded coverage of classical control theory, autopilot designs, and modern control theory. Through the use of extensive examples, problems, and historical notes, author Robert Nelson develops a concise and vital text for aircraft flight stability and control or flight dynamics courses.