Posted on 2013-03-17. By anonymous.
Crawford Aviation | 1981 | ISBN: 0960393404 | English | 218 pages | PDF | 9.97 MB
Published to help the beginning designer through some of the preliminary phases of aircraft design.
The nomogram and design procedure described in this book are aids I developed as a result of a design study for "Crawdad" â€” an ultralight foot-launched motor glider that I hope to build. In the process of learning about aircraft design I discovered the various useful performance and design nomograms of Raoul Hoffman, a noted practical aerodynamicist of the 30's and 40's. His alignment charts were useful because I could obtain answers to involved problems in aerodynamics by drawing straight lines connecting the related aircraft performance parameters. With this background, I was inspired to seek a single nomograrn that I could use to make parametric studies for future designs. With the aerodynamic relations contained on a single graph, the calculation could then proceed in a systematic manner, since the answers from one graphical construction would be automatically available as data for the next.
An attractive feature of the nomogram is that it is "preprogrammed" so that we don't have to worry about exponents and conversion factors in the equations. All of the governing aerodynamic relations are built into the design of the scales and we can dispense with the tedious algebra
Finally, by using a plastic template and a graphical construction technique, we can simplify the task of finding the rate of climb versus airspeed. One part of the template is used to find the gliding sink rate and the other part gives the rate of climb produced by the engine brake horsepower lifting the weight of the airplane with an efficiency corresponding to that of an idealized propeller. Using each part of the template as a French curve having the mathematically correct shape, we can immediately draw the two curves and subtract to find the rate of climb. The intersection of the curves gives the maximum level speed. The template is positioned using the reference points obtained from the graphical calculation with the nomogram. Then, we can use the reference scales on the template to make rapid parametric studies for the effects of altitude, weight, drag, brake horsepower, propeller diameter, and airplane size.
The book began as an instruction pamphlet for the use of the nomogram, but it has evolved into the present handbook, with the detailed sample calculation, parametric study and theoretical background. The governing equations are tabulated for the convenience of those who want to program them on a computer and a sample listing for a FORTRAN computer program for the performance analysis is given in Appendix E. However, the answers obtained from the nomogram and the graphical construction of the rate of climb curve are adequate in the preliminary design stages. Although the computer will give greater numerical accuracy, the approximations of the governing equations do not justify keeping accuracy greater than two or three digits.
The book is written for the homebuilder as well as for the beginning aerodynamicist. The first part of the book is devoted to practical considerations and is meant to be self-contained. The Airplane Performance and Design Nomogram can be used without really having to understand the details of the aerodynamic analysis of Part 2, which can be deferred until a working knowledge of the design process is established. In this way, the homebuilder or novice engineering student can gain confidence and experience by working with practical examples before trying to study the mathematics of aerodynamics. The book and nomogram will be especially useful as a supplementary text to aid the student with his (or her) preliminary aircraft design project.
- Ebooks list page : 21620
- 2018-01-11[PDF] A Practical Guide to Airplane Performance and Design
- 2010-07-11A Practical Guide to Airplane Performance and Design
- 2014-03-25Skin of Color: A Practical Guide to Dermatologic Diagnosis and Treatment (Repost) - Removed
- 2013-12-22Essential Skills for the Agile Developer: A Guide to Better Programming and Design (repost)
- 2013-06-25Gary S. Coyne, The Laboratory Companion: A Practical Guide to Materials, Equipment, and Technique (Repost)
- 2013-02-15The Laboratory Companion: A Practical Guide to Materials, Equipment, and Technique (repost)
- 2013-02-08The Handbook of Project Management: A Practical Guide to Effective Policies and Procedures (repost)
- 2012-12-28Living With Someone Who's Living With Bipolar Disorder: A Practical Guide for Family, Friends, and Coworkers [Repost]
- 2012-12-15Essential Skills for the Agile Developer: A Guide to Better Programming and Design [Repost]
- 2012-11-04Informants and Undercover Investigations: A Practical Guide to Law, Policy, and Procedure (repost) - Removed
- 2012-10-29Working Sheep Dogs: A Practical Guide to Breeding, Training and Handling (repost)
- 2012-09-07Nicky Epstein's Knitting on Top of the World: The Global Guide to Traditions, Techniques and Design [Repost]
- 2012-02-05Strategic Planning: A Practical Guide to Strategy Formulation and Execution (repost)
- 2011-12-07The Handbook of Project Management: A Practical Guide to Effective Policies and Procedures (Repost)
- 2011-11-10Strategic Planning: A Practical Guide to Strategy Formulation and Execution [Repost, Nov 2011]
- 2011-11-08Strategic Planning: A Practical Guide to Strategy Formulation and Execution (Repost)
- 2011-10-05Sustainable Infrastructure: The Guide to Green Engineering and Design (Repost)
- 2011-09-16Working Sheep Dogs: A Practical Guide to Breeding, Training and Handling (Repost)
- 2011-08-18Synthetic Nitrogen Products: A Practical Guide to the Products and Processes (Repost)
- Download links and password may be in the description section, read description carefully!
- Do a search to find mirrors if no download links or dead links.