Author: John R. McGheePublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Landing Characteristics of a Reentry Capsule with a Trous-shaped Air Bag for Load Alleviation
Author: John R. McGheeInvestigation of the Landing Characteristics of a Reentry Vehicle Having a Canted Multiple-air-bag Load-alleviation System
Author: Sandy M. StubbsPublisher:
ISBN:
Category : Impact
Languages : en
Pages : 32
Book Description
Investigation of the Landing Characteristics of a Reentry Vehicle Having a Canted Multiple-air-bag Load-alleviation System
Author: Sandy M. StubbsModel Investigation of the Landing Characteristics of a Re-entry Spacecraft with a Vertical-cylinder Air Bag for Load Alleviation
Author: John R. McGeheePublisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
Analytical and experimental investigations were made to determine the landing characteristics of a re-entry spacecraft equipped with a verticalcylinder air bag for impact load alleviation. Assuming a rigid body and isothermal air compression and expansion, computations were made to determine accelerations for a landing on concrete from a flight-path angle of 90 degrees (vertical flight path) at a contact attitude of 0 degrees. Two models (1/6 and 1/2 scale) of the air-bag system were tested. A 1/6-scale dynamic model of a spacecraft--air-bag configuration proposed for manned re-entry was landed on concrete, on sand, and in calm water from various flight paths for a range of contact attitudes. Reasonable agreement between computed and experimental data indicates that the scaling technique developed is satisfactory for prediction of fullscale characteristics from model tests with air bags in atmospheric environment. The maximum accelerations obtained during landings on sand were about 11g along the X-axis and about 8g along the Z-axis. The maximum accelerations obtained during landings in water were about 10g along the X-axis and about 6g along the Z-axis. (Author).
Effect of a Load-Alleviating Structure on the Landing Behavior of a Reentry-Capsule Model
Author: Edward L. HoffmanPublisher:
ISBN:
Category :
Languages : en
Pages : 1
Book Description
Model tests were made to determine the landingimpact characteristics of a parachute-supported reentry capsule that had a compliable metal structure as a load-alleviating device. A 1/6scale dynamic model having compliable Al-alloy legs designed to give a low onset rate of acceleration on impact was tested. Landings were made on concrete, sand, and water. The maximum acceleration encountered was approximately 35g and the maximum onset rate was 2,000 g/sec. The model tumbled in landings on concrete at the 55 degrees flight-path, + or - 30 degrees contact-attitude conditions; therefore, loadalleviating devices on the canister end of the model would be required. To evaluate the scaling characteristics of compliable metal structures, models were tested with 1/4.1-scale and fullscale Al-alloy legs. The maximum vertical accelerations and strokes obtained from tests of the 1/4.1-scale and full-scale legs were the same within the recording accuracy of the equipment. (Author).
Wingless Flight
Author: R. Dale ReedPublisher: University Press of Kentucky
ISBN: 0813161606
Category : Technology & Engineering
Languages : en
Pages : 256
Book Description
Most lifting bodies, or "flying bathtubs" as they were called, were so ugly only an engineer could love them, and yet, what an elegant way to keep wings from burning off in supersonic flight between earth and orbit. Working in their spare time (because they couldn't initially get official permission), Dale Reed and his team of engineers demonstrated the potential of the design that led to the Space Shuttle. Wingless Flight takes us behind the scenes with just the right blend of technical information and fascinating detail (the crash of M2-F2 found new life as the opening credit for TV's "The Six Million Dollar Man"). The flying bathtub, itself, is finding new life as the proposed escape-pod for the Space Station.
On the Shoulders of Titans
Author: Barton C. HackerPublisher: Createspace Independent Pub
ISBN: 9781492947554
Category : Technology & Engineering
Languages : en
Pages : 650
Book Description
A detailed, yet highly readable book, On the Shoulders of Titans should be the starting point for all who are interested in the basic history of the Gemini Program. NASA's second human spaceflight program, Gemini laid the groundwork for the more ambitious Apollo program which put astronauts on the Moon.
Living and Working in Space
Author: William David ComptonPublisher: Courier Corporation
ISBN: 0486264343
Category : Science
Languages : en
Pages : 466
Book Description
The official record of America's first space station, this book from the NASA History Series chronicles the Skylab program from its planning during the 1960s through its 1973 launch and 1979 conclusion. Definitive accounts examine the project's achievements as well as its use of discoveries and technology developed during the Apollo program. 1983 edition.
AU-18 Space Primer
Author: Air Command Staff CollegePublisher: CreateSpace
ISBN: 9781478393559
Category :
Languages : en
Pages : 354
Book Description
The US National Space Policy released by the president in 2006 states that the US government should "develop space professionals." As an integral part of that endeavor, "AU-18, Space Primer", provides to the joint war fighter an unclassified resource for understanding the capabilities, organizations, and operations of space forces. This primer is a useful tool both for individuals who are not "space aware"-unacquainted with space capabilities, organizations, and operations-and for those who are "space aware," especially individuals associated with the space community, but not familiar with space capabilities, organizations, and operations outside their particular areas of expertise. It is your guide and your invitation to all the excitement and opportunity of space. Last published in 1993, this updated version of the Space Primer has been made possible by combined efforts of the Air Command and Staff College's academic year 2008 "Jointspacemindedness" and "Operational Space" research seminars, as well as select members of the academic year 2009 "Advanced Space" research seminar. Air university Press.
Facing the Heat Barrier
Author: T. A. HeppenheimerPublisher: Government Printing Office
ISBN: 9780160831553
Category : Business & Economics
Languages : en
Pages : 358
Book Description
Hypersonics is the study of flight at speeds where aerodynamic heating dominates the physics of the problem. It is an engineering science with close links to supersonics and engine design. Within this field, many of the most important results have been experimental. The principal facilities have been wind tunnels and related devices, which have produced flows with speeds up to orbital velocity. Why is this important? Hypersonics has had two major applications. The first has been to provide thermal protection during atmospheric reentry. Success in this enterprise has supported ballistic-missile nose cones, has returned strategic reconnaissance photos from orbit and astronauts from the Moon, and has even dropped an instrument package into the atmosphere of Jupiter. The second application has involved high-speed propulsion and has sought to develop the scramjet as an advanced airbreathing ramjet. Atmospheric entry today is fully mature as an engineering discipline, but work with its applications continues to reach for new achievements. Studies of scramjets still seek full success, in which such engines can accelerate a vehicle without the use of rockets. Hence, there is much to do in this area as well.