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Model Investigation Of The Landing Characteristics Of A Re Entry Spacecraft With A Vertical Cylinder Air Bag For Load Alleviation
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Book Synopsis Model Investigation of the Landing Characteristics of a Reentry Spacecraft with a Vertical-cylinder Air Bag for Load Alleviation by : John R. McGehee
Download or read book Model Investigation of the Landing Characteristics of a Reentry Spacecraft with a Vertical-cylinder Air Bag for Load Alleviation written by John R. McGehee and published by . This book was released on 1962 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the Landing Characteristics of a Reentry Vehicle Having a Canted Multiple-air-bag Load-alleviation System by : Sandy M. Stubbs
Download or read book Investigation of the Landing Characteristics of a Reentry Vehicle Having a Canted Multiple-air-bag Load-alleviation System written by Sandy M. Stubbs and published by . This book was released on 1963 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Model Investigation of the Landing Characteristics of a Re-entry Spacecraft with a Vertical-cylinder Air Bag for Load Alleviation by : John R. McGehee
Download or read book Model Investigation of the Landing Characteristics of a Re-entry Spacecraft with a Vertical-cylinder Air Bag for Load Alleviation written by John R. McGehee and published by . This book was released on 1962 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Landing Characteristics of a Reentry Capsule with a Torus-shaped Air Bag for Load Alleviation by : John R. McGehee
Download or read book Landing Characteristics of a Reentry Capsule with a Torus-shaped Air Bag for Load Alleviation written by John R. McGehee and published by . This book was released on 1960 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation has been made to determine the landing characteristics of a conical-shaped reentry capsule by using torus-shaped air bags for impact alleviation. An impact bag was attached below the large end of the capsule to absorb initial impact loads and a second bag was attached around the canister to absorb loads resulting from impact on the canister when the capsule overturned. A 1/6-scale dynamic model of the configuration was tested for nominal flight paths of 600 and 900 (vertical), a range of contact attitudes from -250 to 300, and a vertical contact velocity of 12.25 feet per second. Accelerations were measured along the X-axis (roll) and Z-axis (yaw) by accelerometers rigidly installed at the center of gravity of the model. Actual flight paths, contact attitudes, and motions were determined from high-speed motion pictures. Landings were made on concrete and on water.
Book Synopsis Investigation of the Landing Characteristics of a Reentry Vehicle Having a Canted Multiple-air-bag Load-alleviation System by : Sandy M. Stubbs
Download or read book Investigation of the Landing Characteristics of a Reentry Vehicle Having a Canted Multiple-air-bag Load-alleviation System written by Sandy M. Stubbs and published by . This book was released on 1963 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Model Investigation of the Landing Characteristics of a Manned Spacecraft by : William C. Thompson
Download or read book Dynamic Model Investigation of the Landing Characteristics of a Manned Spacecraft written by William C. Thompson and published by . This book was released on 1965 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigations were made to study the water landing and certain ground-surface landing characteristics of a Gemini spacecraft model. The water landing experiments were made by simulating paraglider and parachute letdowns with two 1/6-scale model configurations. Parameters included various combinations of attitude, horizontal speed, vertical speed, and landing skids extended and retracted. Investigations were made in calm water and in waves. The paraglider landings at horizintal speeds of 65 feet per second (19.8 m/sec) and above resulted in a noseover or tumbling shortly after initial water contact. The maximum longitudinal acceleration of the model in calm water was about 14g units, and the maximum angular acceleration was 66 radians per second squared. In the Parachute landings with the heat shield forward the model skidded along the water surface on the heat shield. Parachute landings with the small end forward resulted in behavior similar to that of the paraglider landings.
Book Synopsis Effect of a Load-alleviating Structure on the Landing Behavior of a Reentry-capsule Model by : Edward L. Hoffman
Download or read book Effect of a Load-alleviating Structure on the Landing Behavior of a Reentry-capsule Model written by Edward L. Hoffman and published by . This book was released on 1961 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Landing Characteristics of a Reentry Capsule with a Trous-shaped Air Bag for Load Alleviation by : John R. McGhee
Download or read book Landing Characteristics of a Reentry Capsule with a Trous-shaped Air Bag for Load Alleviation written by John R. McGhee and published by . This book was released on 1960 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Landing-Impact Characteristics of Load-Alleviating Struts on a Model of a Winged Space Vehicle by : Ulysse J. Blanchard
Download or read book Landing-Impact Characteristics of Load-Alleviating Struts on a Model of a Winged Space Vehicle written by Ulysse J. Blanchard and published by . This book was released on 1960 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A brief experimental investigation was made of the landing-impact characteristics of a 1/9-scale dynamic model of a winged space vehicle. The landing tests were made by catapulting a free model onto a hard; surface runway and onto water. The model had a conical fuselage and a flat - plate wing with a basic delta planform and 75 deg sweepback of the leading edge. The use of yielding-metal shock absorbers and various landing-gear arrangements was investigated during landing impact. The basic landing gear consisted of a dual rubber-tired nose wheel and twin main skids aft of the center of gravity near the wing tips. landing motion and acceleration data were obtained over a range of landing attitudes, gross weights, and initial sinking speeds. Brief tests were made with an alternate nose-wheel location. An all-skid configuration also was briefly evaluated for hard-surface and water landings. The landing gear employing yielding struts for impact-energy absorption during hard-surface landings resulted in accelerations of approximately 5 1/2 g near the nose gear over a range of landing parameters. Replacing the nose wheel and tire with a skid did not significantly change the accelerations. Landings in smooth water with rigid struts and adequate planing area at the nose skid resulted in a maximum landing acceleration of approximately 4g.
Book Synopsis Water Pressures and Accelerations During Landing of a Dynamic Model of the Apollo Spacecraft with a Deployed-heat-shield Impact-attenuation System by : Sandy M. Stubbs
Download or read book Water Pressures and Accelerations During Landing of a Dynamic Model of the Apollo Spacecraft with a Deployed-heat-shield Impact-attenuation System written by Sandy M. Stubbs and published by . This book was released on 1968 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the Static Stability Characteristics of a Reentry Spacecraft Model in Free Flight for Mach Numbers from 2.62 to 1.11 Launched at an Angle of Attack of 180° by : J. W. Usry
Download or read book Investigation of the Static Stability Characteristics of a Reentry Spacecraft Model in Free Flight for Mach Numbers from 2.62 to 1.11 Launched at an Angle of Attack of 180° written by J. W. Usry and published by . This book was released on 1961 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1968 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Effects on Materials and Equipment by :
Download or read book Environmental Effects on Materials and Equipment written by and published by . This book was released on 1963 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Landing Characteristics of the Apollo Spacecraft with Deployed-heat-shield Impact Attenuation Systems by : Sandy M. Stubbs
Download or read book Landing Characteristics of the Apollo Spacecraft with Deployed-heat-shield Impact Attenuation Systems written by Sandy M. Stubbs and published by . This book was released on 1966 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was made to determine the landing characteristics of a 1/4-scale dynamic model of the Apollo spacecraft command module using two different active (heat shield deployed prior to landing) landing systems for impact attenuation. One landing system (configuration 1) consisted of six hydraulic struts and eight crushable honeycomb struts. The other landing system (configuration 2), consisting of four hydraulic struts and six strain straps, was lighter. Tests made on water and the hard clay-gravel composite landing surfaces simulated parachute letdown (vertical) velocities of 23 ft/sec (7.0 m/s) (full scale). Landings made on the sand landing surface simulated vertical velocities of 30 ft/sec (9.1 m/s). Horizontal velocities of from 0 to 50 ft/sec (15 m/s) were simulated. Landing attitudes ranged from -30 degrees to 20 degrees , and the roll attitudes were 0 degrees, 90 degrees, and 180 degrees.
Book Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1980 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Effects on Materials & Equipment by :
Download or read book Environmental Effects on Materials & Equipment written by and published by . This book was released on 1963 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Model Investigation of Water Pressures and Accelerations Encountered During Landings of the Apollo Spacecraft by : Sandy M. Stubbs
Download or read book Dynamic Model Investigation of Water Pressures and Accelerations Encountered During Landings of the Apollo Spacecraft written by Sandy M. Stubbs and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
