39th AIAA Aerospace Sciences Meeting and Exhibit PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download 39th AIAA Aerospace Sciences Meeting and Exhibit PDF full book. Access full book title 39th AIAA Aerospace Sciences Meeting and Exhibit by . Download full books in PDF and EPUB format.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 826
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 826
Get Book Here
Book Description
Author: Gabi Ben-Dor
Publisher: Springer Science & Business Media
ISBN: 1475742797
Category : Science
Languages : en
Pages : 321
Get Book Here
Book Description
The phenomenon of shock wave reflection was first reported by the distinguished philosopher Ernst Mach in 1878. Its study was then abandoned for a period of about 60 years until its investigation was initiated in the early 1940s by Professor John von Neumann and Professor Bleakney. Under their supervision, 15 years of intensive research related to various aspects of the reflection of shock waves in pseudo-steady flows were carried out. It was during this period that the four basic shock wave reflection configurations were discovered. Then, for a period of about 10 years from the mid 1950s until the mid 1960s, investigation of the reflection phenomenon of shock waves was kept on a low flame all over the world (e. g. Australia, Japan, Canada, U. S. A. , U. S. S. R. , etc. ) until Professor Bazhenova from the U. S. S. R. , Professor Irvine Glass from Canada, and Professor Roy Henderson from Australia re initiated the study of this and related phenomena. Under their scientific supervision and leadership, numerous findings related to this phenomenon were reported. Probably the most productive research group in the mid 1970s was that led by Professor Irvine Glass in the Institute of Aerospace Studies of the University of Toronto. In 1978, exactly 100 years after Ernst Mach first reported his discovery of the reflection phenomenon, I published my Ph. D. thesis in which, for the first time, analytical transition criteria between the various shock wave reflection configurations were established.
Author: Raymond Von Wahlde
Publisher:
ISBN: 9781423543350
Category :
Languages : en
Pages : 85
Get Book Here
Book Description
In order to assess the value added by the application of fire control technology to sniper weapons, "error budgets" are developed as a function of range for several sniper weapon systems. A system is comprised of the weapon and its associated ammunition as well as the type of fire control technology provided that weapon. For this study, a total of four weapon-ammunition combinations were used and three levels of fire control sophistication were examined. The "baseline system" consists of a two-person sniper team using a standard rifle, spotting scope, and laser range finder to make aiming corrections. The "cross-wind system" adds a laser crosswind sensing device and more accurate range finder incorporated into the spotting scope. The "fire control system" performs a full ballistic firing solution and presents a real- time corrected aim point to the shooter. One-sigma system errors and probabilities of hit against an E-silhouette target are calculated.
Author: Major Thomas P. Ehrhart
Publisher: Pickle Partners Publishing
ISBN: 1786253925
Category : History
Languages : en
Pages : 116
Get Book Here
Book Description
Operations in Afghanistan frequently require United States ground forces to engage and destroy the enemy at ranges beyond 300 meters. These operations occur in rugged terrain and in situations where traditional supporting fires are limited due to range or risk of collateral damage. With these limitations, the infantry in Afghanistan require a precise, lethal fire capability that exists only in a properly trained and equipped infantryman. While the infantryman is ideally suited for combat in Afghanistan, his current weapons, doctrine, and marksmanship training do not provide a precise, lethal fire capability to 500 meters and are therefore inappropriate. Comments from returning non-commissioned officers and officers reveal that about fifty percent of engagements occur past 300 meters. The enemy tactics are to engage United States forces from high ground with medium and heavy weapons, often including mortars, knowing that we are restricted by our equipment limitations and the inability of our overburdened soldiers to maneuver at elevations exceeding 6000 feet. Current equipment, training, and doctrine are optimized for engagements under 300 meters and on level terrain There are several ways to extend the lethality of the infantry. A more effective 5.56-mm bullet can be designed which provides enhanced terminal performance out to 500 meters. A better option to increase incapacitation is to adopt a larger caliber cartridge, which will function using components of the M16/M4. The 2006 study by the Joint Service Wound Ballistics-Integrated Product Team discovered that the ideal caliber seems to be between 6.5 and 7-mm. This was also the general conclusion of all military ballistics studies since the end of World War I.
Author: Robert F. Ide
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
Get Book Here
Book Description
The icing research tunnel at the NASA Glenn Research Center underwent a major rehabilitation in 1999, necessitating recalibration of the icing clouds. This report describes the methods used in the recalibration, including the procedure used to establish a uniform icing cloud and the use of a standard icing blade technique for measurement of liquid water content. The instruments and methods used to perform the droplet size calibration are also described. The liquid water content/droplet size operating envelopes of the icing tunnel are shown for a range of airspeeds and compared to the FAA icing certification criteria. The capabilities of the IRT to produce large droplet icing clouds is also detailed.
Author: James E. Murray
Publisher:
ISBN:
Category : Mars (Planet)
Languages : en
Pages : 22
Get Book Here
Book Description
Author:
Publisher: DIANE Publishing
ISBN: 142891790X
Category :
Languages : en
Pages : 51
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Ammunition
Languages : en
Pages : 28
Get Book Here
Book Description
Author: John McQuillen
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Armored vehicles, Military
Languages : en
Pages : 6
Get Book Here
Book Description
