Author: J. D. HunleyPublisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 184
Book Description
Toward Mach 2
Author: J. D. HunleyPublisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 184
Book Description
Toward Mach 2
Author: National Aeronautics and Space AdministrationPublisher: CreateSpace
ISBN: 9781493794232
Category : History
Languages : en
Pages : 174
Book Description
In the long and proud history of flight research at what is now called the NASA Dryden Flight Research Center, the D-558 project holds a special place as being one of the earliest and most productive flight research efforts conducted here. Data from the D-558 and the early X-planes enabled researchers at what became NASA's Langley Research Center to correlate and correct test results from wind tunnels with actual flight values. Then, the combined results of flight and wind-tunnel testing enabled the U.S. aeronautical community to solve many of the problems that occur in the transonic speed range (about 0.8 to 1.2 times the speed of sound), such as pitch-up, buffeting, and other instabilities. This enabled reliable and routine flight of such aircraft as the century series of fighters (F-100, F-102, F-104, etc.) as well as all commercial transport aircraft from the mid-1950s to the present. The Douglas D-558-1 Skystreak and D-558-2 Skyrocket were, with the Bell XS-1, the earliest transonic research aircraft built in this country to gather data so the aviation community could understand what was happening when aircraft approached the speed of sound (roughly 741 miles per hour at sea level in dry air at 32 degrees Fahrenheit). In the early 1940s, fighter (actually, in the terms of the time, pursuit) aircraft like the P-38 Lightning were approaching these speeds in dives and either could not get out of the dives before hitting the ground or were breaking apart from the effects of compressibility—increased density and disturbed airflow as the speed approached that of sound and created shock waves.
Toward Mach 2: the Douglas D-558 Program
Author: J. D. HunleyPublisher: CreateSpace
ISBN: 9781478266709
Category :
Languages : en
Pages : 174
Book Description
The Douglas D-558-1 Skystreak and D-558-2 Skyrocket were, with the Bell XS-1, the earliest transonic research aircraft built in this country to gather data so the aviation community could understand what was happening when aircraft approached the speed of sound (roughly 741 miles per hour at sea level in dry air at 32 degrees Fahrenheit). In the early 1940s, fighter (actually, in the terms of the time, pursuit) aircraft like the P-38 Lightning were approaching these speeds in dives and either could not get out of the dives before hitting the ground or were breaking apart from the effects of compressibility-increased density and disturbed airflow as the speed approached that of sound and created shock waves.
Toward Mach 2
Author: World Spaceflight NewsPublisher:
ISBN: 9781521327753
Category :
Languages : en
Pages : 150
Book Description
This official NASA history report provides a history of research with the D-558 Skystreak and Skyrocket supersonic airplane at NASA's Dryden Flight Research Center in California. In the long and proud history of flight research at what is now called the NASA Dryden Flight Research Center, the D-558 project holds a special place as being one of the earliest and most productive flight research efforts conducted here. Data from the D-558 and the early X-planes enabled researchers at what became NASA's Langley Research Center to correlate and correct test results from wind tunnels with actual flight values. Then, the combined results of flight and wind-tunnel testing enabled the U.S. aeronautical community to solve many of the problems that occur in the transonic speed range (about 0.8 to 1.2 times the speed of sound), such as pitch-up, buffeting, and other instabilities. This enabled reliable and routine flight of such aircraft as the century series of fighters (F-100, F-102, F-104, etc.) as well as all commercial transport aircraft from the mid-1950s to the present.At the symposia honoring the 50th anniversary of the D-558-1 Skyrocket's first flight in February 1948, four D-558 pilots -- Stanley P. Butchart, Robert A. Champine, A. Scott Crossfield, and John Griffith -- plus Air Force Historian Richard Hallion offered insightful comments and meaningful anecdotes that deserved a wider audience than the few hundred people who attended. To make their recollections and related documents available to such an audience, NASA is publishing this volume.The Douglas D-558-1 Skystreak and D-558-2 Skyrocket were, with the Bell XS-1, the earliest transonic research aircraft built in this country to gather data so the aviation community could understand what was happening when aircraft approached the speed of sound (roughly 741 miles per hour at sea level in dry air at 32 degrees Fahrenheit). In the early 1940s, fighter (actually, in the terms of the time, pursuit) aircraft like the P-38 Lightning were approaching these speeds in dives and either could not get out of the dives before hitting the ground or were breaking apart from the effects of compressibility--increased density and disturbed airflow as the speed approached that of sound and created shock waves.At this time, aerodynamicists lacked accurate wind-tunnel data for the speed range from roughly Mach 0.8 to 1.2 (respectively, 0.8 and 1.2 times the speed of sound, so named in honor of Austrian physicist Ernst Mach, who -- already in the second half of the 19th century -- had discussed the speed of a body moving through a gas and how it related to the speed of sound). To overcome the limited knowledge of what was happening at these transonic speeds, people in the aeronautics community -- especially the National Advisory Committee for Aeronautics (NACA), the Army Air Forces (AAF -- Air Force after 1947), and the Navy -- agreed on the need for a research airplane with enough structural strength to withstand compressibility effects in this speed range. The AAF preferred a rocket-powered aircraft and funded the XS-1 (experimental Supersonic, later shortened to simply X), while the NACA and Navy preferred a more conservative design and pursued the D-558, with the NACA also supporting the X-1 research.
Toward Mach 2
Author: NASA History OfficePublisher: www.Militarybookshop.CompanyUK
ISBN: 9781780393025
Category : Technology & Engineering
Languages : en
Pages : 176
Book Description
Toward Mach 2: the Douglas D-558 Program, the NASA History Series, NASA SP-4222, 1999
Author: Toward Mach 2
Author: J. D. HunleyPublisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 180
Book Description
Douglas D-558
Author: Peter E. DaviesPublisher: Bloomsbury Publishing
ISBN: 1472836200
Category : History
Languages : en
Pages : 81
Book Description
The six Douglas D-558 research aircraft, built as two variants, were produced for a US Navy and NACA collaborative project to investigate flight in the high subsonic and supersonic regimes and to develop means of coping with the dangerous phenomena of compressibility and pitch-up which had caused many accidents to early jets. Wind tunnels could not provide the necessary data so pilots had to risk their safety in experimental aircraft which, for their time, achieved phenomenal performance. Both series of D-558 were well-designed, strong and efficient aircraft which enabled test pilots to tackle the unknown in comparative safety. Though delayed by their innovative but troublesome power-plants, and limited by the cost of their air-launched sorties, they went well beyond their original Mach 1 speed objective and continued to generate information that provided design solutions for a whole generation of supersonic combat aircraft. Although the final stage of the D-55 programme, the USN's 'militarized' D-558-3, never happened, the Navy was able to apply the lessons of the programme to its much more practical combat types such as the F8U Crusader and F3H Demon. Supported by full-colour artwork including three-view plates of the two D-558 models and a technical view of the D-2 cockpit, this authoritative text offers a comprehensive guide to the record-breaking Navy research craft.
Apollo by the Numbers
Author: Richard W. OrloffPublisher:
ISBN:
Category : Moon
Languages : en
Pages : 348
Book Description
This work is a unique collection of valuable statistical information about Project Apollo. It includes a chapter (about 20 pages each) for Apollo 1 through Apollo 17. There are several data tables for each mission, plus a 50-page section with additional statistics and tables that merge data for each mission so you can easily make comparisons. Tables include launch and ascent data, fuel consumption, stage impact locations, very detailed mission timelines, and much more.
Author: