Download or read book Subsonic Unsteady Aerodynamics for General Configurations Part 2 Volume 1 Application of the Doublet Lattice Method and the Method of Images to Lifting Surface Body Interference written by and published by . This book was released on 1972 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique for predicting steady and oscillatory aerodynamic loads on general configurations has been developed which is based on the Doublet- Lattice Method and the method of images. Chord- and spanwise loading on lifting surfaces and longitudinal body load distributions are determined. Configurations may be composed of an assemblage of bodies (elliptic cross sections and a distribution of width or radius) and lifting surfaces (arbitrary planform and dihedral, with or without control surfaces). Loadings predicted by this method are required for flutter, gust, frequency response and static aeroelastic analyses and may be used to determine static and dynamic stability derivatives. The methods described in this report are intended to be used by airplane designers to calculate with improved accuracy, the unsteady aerodynamic pressures that act on a lifting surface being propelled at subsonic speeds. The new feature of these calculations is that the effects on the pressure field induced by interference between the fuselage, for example, and the wing or the wing, pylon and nacelle, are taken into account. These calculations are an essential ingredient of flutter analyses and will improve the confidence level of such calculations in preventing wing-store flutter and flutter of advanced vehicles where fuselages are relatively large, provide some lifting capability and cause noticeable interference effects.
Download or read book The NASTRAN Theoretical Manual written by and published by . This book was released on 1981 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subsonic Unsteady Aerodynamics for General Configurations Part I Volume I Direct Application of the Nonplanar Doublet Lattice Method written by Joseph P. Giesing and published by . This book was released on 1971 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two methods of accounting for body-lifting surface interference in unsteady flow are considered. The first method is a direct application of nonplanar lifting surface elements to both the lifting surfaces and the body surfaces. This type of idealization must be used with an axial doublet introduced to account for body incidence effects. The undesirable effects of the annular wing representation are then reduced. The second approach uses an image system and an axial singularity system to account for the effects of the bodies. The methods described are intended to be used by airplane designers to calculate with improved accuracy, the unsteady aerodynamic pressures that act on a lifting surface being propelled at subsonic speeds. The new feature of these calculations is that the effects on the pressure field induced by interference between the fuselage, for example, and the wing or the wing, pyon and nacelle, are taken into account. These calculations are an essential ingredient of flutter analyses and will improve the confidence level of such calculations in preventing wing-store flutter and flutter of advanced vehicles where fuselages are relatively large, provide some lifting capability and cause noticeable interference effects. (Author).
Download or read book NASTRAN User s Manual written by and published by . This book was released on 1970 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subsonic Unsteady Aerodynamics for General Configurations Part 2 Volume 2 Computer Program N5KA written by and published by . This book was released on 1972 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique for predicting steady and oscillatory aerodynamic loads on general configurations has been developed which is based on the Doublet- Lattice Method and the method of images. Chord- and spanwise loading on lifting surfaces and longitudinal body load distributions are determined. Configurations may be composed of an assemblage of bodies (elliptic cross sections and a distribution of width or radius) and lifting surfaces (arbitrary planform and dihedral, with or without control surfaces). Loadings predicted by this method are required for flutter, gust, frequency response and static aeroelastic analyses and may be used to determine static and dynamic stability derivatives. The methods described in this report are intended to be used by airplane designers to calculate with improved accuracy, the unsteady aerodynamic pressures that act on a lifting surface being propelled at subsonic speeds. The new feature of these calculations is that the effects on the pressure field induced by interference between the fuselage, for example, and the wing or the wing, pylon and nacelle, are taken into account. These calculations are an essential ingredient of flutter analyses and will improve the confidence level of such calculations in preventing wing-store flutter and flutter of advanced vehicles where fuselages are relatively large, provide some lifting capability and cause noticeable interference effects. The general requirement for such calculations are contained in Military Specification MIL-A-8870A(USAF).
Download or read book The NASTRAN User s Manual Level L6 0 Supplement written by United States. National Aeronautics and Space Administration and published by . This book was released on 1976 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1981 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeroelastic Addition to NASTRAN written by William P. Rodden and published by . This book was released on 1979 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Missile Motion Sensitivity to Dynamic Stability Derivatives written by T. F. Langham and published by . This book was released on 1980 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: A dynamic derivative sensitivity study was conducted to demonstrate the importance of dynamic derivatives in missile motion simulation studies. Generalized bank-to-turn and yaw-to-turn missile configurations were used with a six-degree-of-freedom linearized stability program. The effects of various dynamic derivatives on missile stability were investigated in both level and turning flight for several Mach numbers and altitude conditions.
Download or read book The NASTRAN Theoretical Manual written by and published by . This book was released on 1970 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Multidisciplinary Analysis and Optimization written by and published by . This book was released on 1989 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Methods in Potential Aerodynamics written by Luigi Morino and published by . This book was released on 1985 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vortex Lattice Utilization written by and published by . This book was released on 1976 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subsonic Unsteady Aerodynamics for General Configurations Part 1 Volume 2 Computer Program H7WC written by and published by . This book was released on 1971 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two methods of accounting for body-lifting surface interference in unsteady flow are considered. The first method is described in Part 1 of the report, while the second will be described in another paper. The first method is a direct application of nonplanar lifting surface elements to both the lifting surfaces and the body surfaces. The body is treated as an annular wing. This type of idealization must be used with an axial doublet introduced to account for body incidence effects. The undesirable effects of the annular wing representation are then reduced. The report also describes an improvement of the Doublet-Lattice Method of Albano and Rodden. The improvement pertains to wing- tail problems where there exists a small vertical (non-zero) separation between the wing and tail planes.
Download or read book NASA SP written by and published by . This book was released on 1976 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Contractor Report written by United States. National Aeronautics and Space Administration and published by . This book was released on 1979 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Aircraft written by and published by . This book was released on 1999 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
