Download or read book A Wind Tunnel Study of Icing Effects on a Business Jet Airfoil written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamic wind tunnel tests were conducted to study the effects of various ice accretions on the aerodynamic performance of a 36-inch chord, two-dimensional business jet airfoil. Eight different ice shape configurations were tested. Four were castings made from molds of ice shapes accreted in an icing wind tunnel. Two were made using computationally smoothed tracings of two of the ice shapes accreted in the icing tunnel. These smoothed profiles were then extended in the spanwise direction to form a two-dimensional ice shape. The final two configurations were formed by applying grit to the smoothed ice shapes. The ice shapes resulted in as much as 48% reduction in maximum lift coefficient from that of the clean airfoil. Large increases in drag and changes in pitching moment were also observed. The castings and their corresponding smoothed counterparts yielded similar results. Little change in performance was observed with the addition of grit to the smoothed ice shapes. Changes in the Reynolds number (from 3 x 10(exp 6) to 10.5 x 10(exp 6) and Mach number (from 0.12 to 0.28) did not significantly affect the iced-airfoil performance coefficients. Addy, Harold E., Jr. and Broeren, Andy P. and Zoeckler, Joesph G. and Lee, Sam Glenn Research Center NASA/TM-2003-212124, NAS 1.15:212124, E-13776, AIAA Paper 2003-0727

Download or read book A Wind Tunnel Study of Icing Effects on a Business Jet Airfoil written by and published by . This book was released on 2003 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Tunnel Study of Icing Effects on a Business Jet Airfoil written by Harold E. Addy and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A wind tunnel study of icing effects on a business jet airfoil written by and published by . This book was released on 2003 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ice Accretions and Icing Effects for Modern Airfoils written by Harold E. Addy and published by . This book was released on 2000 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Icing tests were conducted to document ice shapes formed on three different two-dimensional airfoils and to study the effects of the accreted ice on aerodynamic performance. The models tested were representative of airfoil designs in current use for each of the commercial transport, business jet, and general aviation categories of aircraft. The models were subjected to a range of icing conditions in an icing wind tunnel. The conditions were selected primarily from the Federal Aviation Administration's Federal Aviation Regulations 25 Appendix C atmospheric icing conditions. A few large droplet icing conditions were included. To verify the aerodynamic performance measurements, molds were made of selected ice shapes formed in the icing tunnel. Castings of the ice were made from the molds and placed on a model in a dry, low-turbulence wind tunnel where precision aerodynamic performance measurements were made. Documentation of all the ice shapes and the aerodynamic performance measurements made during the icing tunnel tests is included in this report. Results from the dry, low-turbulence wind tunnel tests are also presented.

Download or read book An Experimental and Numerical Study of Icing Effects on the Performance and Controllability of a Twin Engine Aircraft written by Andrew L. Reehorst and published by . This book was released on 1999 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ice Accretions and Icing Effects for Modern Airfoils written by Harold E. Addy and published by . This book was released on 2000 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Icing tests were conducted to document ice shapes formed on three different two-dimensional airfoils and to study the effects of the accreted ice on aerodynamic performance. The models tested were representative of airfoil designs in current use for each of the commercial transport, business jet, and general aviation categories of aircraft. The models were subjected to a range of icing conditions in an icing wind tunnel. The conditions were selected primarily from the Federal Aviation Administration's Federal Aviation Regulations 25 Appendix C atmospheric icing conditions. A few large droplet icing conditions were included. To verify the aerodynamic performance measurements, molds were made of selected ice shapes formed in the icing tunnel. Castings of the ice were made from the molds and placed on a model in a dry, low-turbulence wind tunnel where precision aerodynamic performance measurements were made. Documentation of all the ice shapes and the aerodynamic performance measurements made during the icing tunnel tests is included in this report. Results from the dry, low-turbulence wind tunnel tests are also presented.

Download or read book Ice Accretions and Icing Effects for Modern Airfoils written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-27 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Icing tests were conducted to document ice shapes formed on three different two-dimensional airfoils and to study the effects of the accreted ice on aerodynamic performance. The models tested were representative of airfoil designs in current use for each of the commercial transport, business jet, and general aviation categories of aircraft. The models were subjected to a range of icing conditions in an icing wind tunnel. The conditions were selected primarily from the Federal Aviation Administration's Federal Aviation Regulations 25 Appendix C atmospheric icing conditions. A few large droplet icing conditions were included. To verify the aerodynamic performance measurements, molds were made of selected ice shapes formed in the icing tunnel. Castings of the ice were made from the molds and placed on a model in a dry, low-turbulence wind tunnel where precision aerodynamic performance measurements were made. Documentation of all the ice shapes and the aerodynamic performance measurements made during the icing tunnel tests is included in this report. Results from the dry, low-turbulence wind tunnel tests are also presented. Addy, Harold E., Jr. Glenn Research Center RTOP 548-21-23

Download or read book Modern Airfoil Ice Accretions written by and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Wind Tunnel Study of Icing Effects on a Natural Laminar Flow Airfoil written by Harold E. Addy and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA FAA Tailplane Icing Program Overview written by Thomas P. Ratvasky and published by . This book was released on 1999 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind Turbines in Cold Climates written by Lorenzo Battisti and published by Springer. This book was released on 2015-02-16 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the key concerns regarding the operation of wind turbines in cold climates and focuses in particular on the analysis of icing and methods for its mitigation. Topics covered include the implications of cold climates for wind turbine design and operation, the relevance of icing for wind turbines, the icing process itself, ice prevention systems and thermal anti-icing system design. In each chapter, care is taken to build systematically on the basic knowledge, providing the reader with the level of detail required for a thorough understanding. An important feature is the inclusion of several original analytical and numerical models for ready computation of icing impacts and design assessment. The breadth of the coverage and the in-depth scientific analysis, with calculations and worked examples relating to both fluid dynamics and thermodynamics, ensure that the book will serve not only as a textbook but also as a practical manual for general design tasks.

Download or read book Man Machine Environment System Engineering written by Shengzhao Long and published by Springer Nature. This book was released on with total page 993 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 41st AIAA Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 2003 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lewis Icing Research Tunnel Test of the Aerodynamic Effects of Aircraft Ground Deicing Anti Icing Fluids written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-18 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wind tunnel investigation of the effect of aircraft ground deicing/anti-icing fluids on the aerodynamic characteristics of a Boeing 737-200ADV airplane was conducted. The test was carried out in the NASA Lewis Icing Research Tunnel. Fluids tested include a Newtonian deicing fluid, three non-Newtonian anti-icing fluids commercially available during or before 1988, and eight new experimental non-Newtonian fluids developed by four fluid manufacturers. The results show that fluids remain on the wind after liftoff and cause a measurable lift loss and drag increase. These effects are dependent on the high-lift configuration and on the temperature. For a configuration with a high-lift leading-edge device, the fluid effect is largest at the maximum lift condition. The fluid aerodynamic effects are related to the magnitude of the fluid surface roughness, particularly in the first 30 percent chord. The experimental fluids show a significant reduction in aerodynamic effects. Runyan, L. James and Zierten, Thomas A. and Hill, Eugene G. and Addy, Harold E., Jr. Glenn Research Center AERODYNAMIC CHARACTERISTICS; BOEING AIRCRAFT; DEICING; ICE FORMATION; NEWTONIAN FLUIDS; RHEOLOGY; WIND TUNNEL TESTS; AERODYNAMIC DRAG; GROUND WIND; LEADING EDGES; LIFT; SURFACE ROUGHNESS...

Download or read book 43rd AIAA Aerospace Sciences Meeting Exhibit written by and published by . This book was released on 2005 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CJ2 Icing Effects Simulator Delivery Order 0019 written by Billy Barnhart and published by . This book was released on 2007 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this effort, Cessna Aircraft Company and Bihrle Applied Research teamed to develop and validate flight simulation models of a typical business jet incorporating the effects of various forms of ice. The ice conditions considered were: - Icing protection system failure ice - Inter-cycle (roughness) ice - Run-back ice. The study entailed wind tunnel tests of different scale wing panels with a wide range of Reynolds numbers to look at how ice effects scaled from a low-speed subscale model to the full-scale airplane. Complete airplane tests were then performed on a 1/12-scale model of the business jet to collect static and dynamic data required for development of a simulation model of the airplane with and without the various ice configurations. The wind tunnel data, properly adjusted for Reynolds number corrections, was used to construct simulation math models of the clean and iced airplane. In order to validate the models, a flight test program was undertaken to collect flight data the ice configurations. The math models were then incorporated into NASA's (National Aeronautics and Space Administration) Ice Contamination Effects Flight Training Device and evaluated by the airframe manufacturer's test pilots. The simulator showed very good agreement with flight results for each of the ice conditions."--P. i.