Product Description
This digital document is an article from Airpower, published by Sentry Books, Inc. on September 1, 2004. The length of the article is 4765 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Swingin' on a spar: the birth and development of variable--geometry aircraft.
Author: Mike Machat
Publication: Airpower (Magazine/Journal)
Date: September 1, 2004
Publisher: Sentry Books, Inc.
Volume: 34Issue: 9Page: 42(14)

Distributed by Thomson Gale ... Read more

Product Description
Defines certain notions used for the geometric description of an aircraft for the purpose of flight dynamic studies. Does not give all the definitions that permit the detailed description of the shape of the aircraft. The aircraft is considered to be made up of various components. Defines general characteristics, overall dimensions of the aircraft, ground limit angles, fuselage, aerodynamic surfaces, wing and empennages. Gives figures. ... Read more

Product Description
Color frontispiece showing a P-51 Mustang: " This airplane represents the first instance of a fuselage developed entirely with copics." Text illustrations. Folding charts and tables. The author was Head of Engineering Loft Mathematics, North American Aviation and special lecturer in engineering mathematics at the University of Southern California. A very scarce book from a major publishing house. Bound in blue cloth with gilt titles. Very good. ... Read more

Product Description
This digital document is a journal article from Journal of Aerosol Science, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Large spatial-scale atmospheric aerosol characterization is commonly accomplished from high-speed aircraft platforms using subisokinetic sampling. The aspiration efficiencies in these inlets are commonly determined from the empirical correlation of Belyaev and Levin [1974. Techniques for collection of representative aerosol samples. Journal of Aerosol Science, 5, 325-338] (B&L), though the correlation was obtained from experiments under conditions very different from those encountered during high-speed aircraft sampling. Aircraft inlets are generally thick-walled, often have a blunt-body downstream, operate at a large freestream to sampling velocity ratio, and under conditions of low ambient pressures. The dependence of sampling characteristics on these parameters is studied using computational fluid dynamics (CFD) modeling. The CFD calculations show that the anisokinetic inlet sampling characteristics are strongly influenced by the operating conditions and sampler geometry, especially the presence of an aft blunt body. It is observed that these dependencies are not accurately captured by the existing correlations. The presence of even a moderately sized blunt-body aft of a sampling inlet can greatly influence the sampling characteristics of a straight tube inlet. A new correlation is derived based on the CFD simulation results, and this correlation is seen to greatly improve prediction of inlet sampling characteristics considering their geometries. ... Read more

Product Description
Text for the beginner. Compiled during class hours in a National Defense School. Divided into four sections including descriptive geometry, template layout, lofting and visualization of the principles learned in first three sections ... Read more

Product Description
This is a AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH report procured by the Pentagon and made available for public release. It has been reproduced in the best form available to the Pentagon. It is not spiral-bound, but rather assembled with Velobinding in a soft, white linen cover. The Storming Media report number is A883993. The abstract provided by the Pentagon follows: A 17-month field study designed to evaluate the feasibility of using trees as a cost-effective groundwater sampling and plume delineation tool was recently completed at site Operable Unit 4 at Hill Air Force Base (Ogden, UT). Using a hand-driven incremental borer, tree-core samples were collected monthly from cottonwood (Populus deltoides), russian olive (Elaeagnaceae elaeagnus), poplar (Salicaceae populus), apple (Malus pumila), and box elder (Acer negundo) trees located within and outside a trichloroethylene (TCE)-contaminated shallow groundwater plume. Concentrations of TCE in the core samples were determined using a headspace gas chromatography procedure. Variations to the headspace analysis method were made and results compared to other methods of TCE measurement for performance comparison. A relationship * between tree core (0. 001 to 32 mg/kg) and groundwater (0.2 to 4890 mg/L) TCE concentrations was observed (e.g., trees located above areas of high groundwater TCE concentration were found to contain high TCE concentrations). Stable isotopes of hydrogen were used to show that shallow TCE-contaminated groundwater is the most likely source of water used by the trees. Wood sorption isotherms (using site specific trees) were completed using C-14 TCE in a sealed batch process. Wood-water partitioning coefficient (K(sub wood)) values of 16.42 mL/g (cottonwood) and 11.51 mL/g (russian olive) were obtained from linear isotherms. When measuring TCE concentrations in water, these K(sub wood) values can now be used to estimate original concentrations of TCE within the tree tissues. ... Read more