Title: Contributions on the subject of longitudinal movements of aircraft in wind shears
First published: 1985
Description: <br/>The effect of <a href="http://openlibrary.org/search?q=downburst" TARGET="_blank">downburst</a>-type <a href="http://openlibrary.org/search?q=wind+shear" TARGET="_blank">wind shears</a> on the longitudinal dynamic behaviour of an unguided aircraft is simulated numerically on the basis of published meteorological data and the flight characteristics of an Airbus A300-B passenger jet. The non-linear differential equations of the aircraft motion are linearized by conventional methods, and the wind effects are introduced via the linear derivatives of the wind components (<span title="also known as" style="border-bottom: 1px dotted; cursor: help;">aka</span> "<a href="http://openlibrary.org/search?q=wind+gradients" TARGET="_blank">wind gradients</A>") to obtain simplified technical models of the longitudinal response to all possible types of constant-gradient wind shears during the first 20-60 seconds after wind shear onset.<br/>
Graphs, diagrams, and tables are provided, and a number of  <a href="http://openlibrary.org/search?q=aircraft+accident" TARGET="_blank">aircraft accidents</a> presumed to have involved wind shears are analyzed in detail. It is confirmed that the trajectories of an airplane in wind shear conditions can be approximated easily in advance.
<div align="center"><span title="- Click to Zoom -"><a  TARGET="_blank" href="https://ia601509.us.archive.org/26/items/WindShearMeasuring/trajectories.jpg" return="false"><img src="https://ia601509.us.archive.org/26/items/WindShearMeasuring/trajectories.jpg" width="450" height="300" ></a></span></div>
<div align="center"><i><b>Comparison of A/C Trajectories</b><p><small> Ref. [81]: <a TARGET="_blank" href="http://libraryonline.erau.edu/online-full-text/ntsb/aircraft-accident-reports/AAR76-08.pdf" title="PDF, 2.4 MB"> Aircraft Accident on June 24, 1975</a> ; EAL  Boeing 727-225, N 8845 E, N.Y. JFK</small></i></div>
See also german version on: <a href="http://openlibrary.org/works/OL12695795W/Beitr%C3%A4ge_zur_L%C3%A4ngsbewegung_von_Flugzeugen_in_Windscherungen" TARGET="_blank"><B>openlibrary.org</a></B><br/>
Subjects: Wind Shear, Wind Gradients, Downbursts, Microburst, Aircraft Accidents