Download or read book The Influence of Vertical Wind Gradients on the Longitudinal Motion of Airplanes written by Joseph Gera and published by . This book was released on 1971 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present study is an attempt to make an assessment of the influence of wind shear on the longitudinal motion of airplanes. It was assumed that the wind is completely horizontal and its speed varies linearly with altitude. It is shown quantitatively that both glide and climb performance are influenced by wind shear and that trimmed flight at constant airspeed, attitude, and with fixed controls is along a parabolic path relative to the ground. The problem of the landing approach in a wind shear is examined in some detail. Small disturbance theory indicates no wind-shear effect on the short-period motion and the time for the phugoid to damp to half amplitude but the phugoid frequency and damping ratio vary considerably with wind shear. A nondimensional quantity which depends on the wind shear and airspeed is shown to be a fundamental parameter influencing the longitudinal dynamic behavior of the airplane.
Download or read book The Influence of Vertical Wind Gradients on the Longitudinal Motion of Airplanes written by Joseph Gera and published by . This book was released on 1971 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analytical Investigation of the Effects of Vertical Wind Gradients on High Performance Aircraft written by Vincent A. Grosso and published by . This book was released on 1961 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The equations representing the motion of an aircraft's center of gravity in three-dimensional space are derived and analyzed in cartesian and polar coordinates. The importance of variable, rotating winds on an aircraft's performance is determined from an analytical investigationof the derived equations. The equations are reduced to two dimensional space to allow a simplified investigation on an IBM 704 digital computer. Performance parameters for a hypothetical Mach Two aircraft climbing under the influence of vertical wind gradients are computedl. It is illustrated from the computations that flying reciprocal heading or attempting to fly crosswind when climbing with the hope of eliminating gradient effects is of no practical value. A method of correcting the rate of change of specific energy for the effects of gradients induced by winds changing in magnitude and direction as a function of altitude is developed. The correction equations are applied to computed climbs to illustrate their effectiveness. An outline for using the correction equations on flight test data is also included.
Download or read book Theoretical Study of the Effect of Wind Velocity Gradients on Longitudinal Stability and Control in Climbing and Level Flight written by Windsor L. Sherman and published by . This book was released on 1978 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1977 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Paper written by and published by . This book was released on 1988 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analytical Study of the Longitudinal Response of Airplanes to Positive Wind Shear written by Windsor L. Sherman and published by . This book was released on 1981 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flight Dynamics in Moving Air written by I︠U︡. P. Dobrolenskiĭ and published by . This book was released on 1971 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Wind Shear on the Aerodynamic Characteristics of Airplanes written by Dan D. Vicroy and published by . This book was released on 1988 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1986 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A theoretical analysis of airplane longitudinal stability and control as affected by wind shear written by Windsor L. Sherman and published by . This book was released on 1977 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1971 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1976 with total page 1408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Wind Shear on the Aerodynamic Characteristics of Airplanes written by Dan D. Vicroy and published by . This book was released on 1988 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aerodynamic effect of shear flow through a series of sensitivity studies of the wind velocity gradients and wing planform geometry parameters is investigated and characterized. The wind shear effect is computed using a modified vortex-lattice computer program and characterized through the formulation of wind shear aerodynamic coefficients. The magnitudes if the aerodynamic effects are demonstrated by computation of the resultant change in the aerodynamics of a conventional wing and horizontal stability configuration on a fixed flight path through a simulated microburst. The results indicate that as much as 20 percent of the control authority of the airplane may be required to counteract the wind-shear-induced forces and moments in the microburst environment.
Download or read book Aeronautical Engineering written by and published by . This book was released on 1971 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1980 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
