Author: David L. Richardson
Publisher:
ISBN:
Category : Extravehicular space suits
Languages : en
Pages : 100
Book Description
The program encompassed an analytical and experimental investigation of the application of passive thermal control techniques to extravehicular flexible space garments in 300 nautical mile earth orbits. Results indicate that passive thermal control by varying the absorptance and emittance of the outer surface of the garment is not possible when internal heat generated is in excess of 1500 Btu/hr. For all conditions, the suit's solar absorptance should be as small as possible and its emittance as large as possible. By controlling the conductance of the space suit wall, internal heating rates to 2000 Btu/hr are achievable when the space suit has an absorptance of 0.17 and an emittance of 0.85. A solar parasol with selected radiating properties on each side allows for higher internal heating rates. Experiments were made in a simulated noon orbit with a cylindrical section of a space suit which was first tested with an evacuated insulation and then with a helium-fillable insulation. The range of average conductance for these insulations was 0.3 to 4.0 Btu/sq ft hr F.A range of internal heat generation from 600 to 2100 Btu/hr was achieved when the evacuated insulation was filled with helium.
Study and Development of Materials and Techniques for Passive Thermal Control of Flexible Extravehicular Space Garments
Author: David L. Richardson
Publisher:
ISBN:
Category : Extravehicular space suits
Languages : en
Pages : 100
Book Description
The program encompassed an analytical and experimental investigation of the application of passive thermal control techniques to extravehicular flexible space garments in 300 nautical mile earth orbits. Results indicate that passive thermal control by varying the absorptance and emittance of the outer surface of the garment is not possible when internal heat generated is in excess of 1500 Btu/hr. For all conditions, the suit's solar absorptance should be as small as possible and its emittance as large as possible. By controlling the conductance of the space suit wall, internal heating rates to 2000 Btu/hr are achievable when the space suit has an absorptance of 0.17 and an emittance of 0.85. A solar parasol with selected radiating properties on each side allows for higher internal heating rates. Experiments were made in a simulated noon orbit with a cylindrical section of a space suit which was first tested with an evacuated insulation and then with a helium-fillable insulation. The range of average conductance for these insulations was 0.3 to 4.0 Btu/sq ft hr F.A range of internal heat generation from 600 to 2100 Btu/hr was achieved when the evacuated insulation was filled with helium.
Publisher:
ISBN:
Category : Extravehicular space suits
Languages : en
Pages : 100
Book Description
The program encompassed an analytical and experimental investigation of the application of passive thermal control techniques to extravehicular flexible space garments in 300 nautical mile earth orbits. Results indicate that passive thermal control by varying the absorptance and emittance of the outer surface of the garment is not possible when internal heat generated is in excess of 1500 Btu/hr. For all conditions, the suit's solar absorptance should be as small as possible and its emittance as large as possible. By controlling the conductance of the space suit wall, internal heating rates to 2000 Btu/hr are achievable when the space suit has an absorptance of 0.17 and an emittance of 0.85. A solar parasol with selected radiating properties on each side allows for higher internal heating rates. Experiments were made in a simulated noon orbit with a cylindrical section of a space suit which was first tested with an evacuated insulation and then with a helium-fillable insulation. The range of average conductance for these insulations was 0.3 to 4.0 Btu/sq ft hr F.A range of internal heat generation from 600 to 2100 Btu/hr was achieved when the evacuated insulation was filled with helium.
Survey of Thermal Control Techniques for Extravehicular Space Suits
Author: Jack C. Hedge
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
Book Description
Techniques and Materials for Passive Thermal Control of Rigid and Flexible Extravehicular Space Enclosures
Author: David L. Richardson
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 316
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 316
Book Description
Research to Advance Extravehicular Protective Technology
Author: David L. Richardson
Publisher:
ISBN:
Category :
Languages : en
Pages : 188
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 188
Book Description
Technical Abstract Bulletin
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 760
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 760
Book Description
Portable Life Support Systems
Author:
Publisher:
ISBN:
Category : Life support systems (Space environment)
Languages : en
Pages : 404
Book Description
Publisher:
ISBN:
Category : Life support systems (Space environment)
Languages : en
Pages : 404
Book Description
Government-wide Index to Federal Research & Development Reports
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1576
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1576
Book Description
Advances in Heat Transfer
Author:
Publisher: Academic Press
ISBN: 0080575587
Category : Science
Languages : en
Pages : 471
Book Description
Advances in Heat Transfer
Publisher: Academic Press
ISBN: 0080575587
Category : Science
Languages : en
Pages : 471
Book Description
Advances in Heat Transfer
Cumulated Index Medicus
Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1542
Book Description
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1542
Book Description