Author: Jack C. Hedge
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
Book Description
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
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.
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1572
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1572
Book Description
A Selected Listing of NASA Scientific and Technical Reports for ...
Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 2088
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 2088
Book Description
Technology for Large Space Systems
Author:
Publisher:
ISBN:
Category : Large space structures (Astronautics)
Languages : en
Pages : 280
Book Description
Publisher:
ISBN:
Category : Large space structures (Astronautics)
Languages : en
Pages : 280
Book Description
Research and Technology Program Digest
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 792
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 792
Book Description
ASHRAE Transactions
Author: American Society of Heating, Refrigerating and Air-Conditioning Engineers
Publisher:
ISBN:
Category : Air conditioning
Languages : en
Pages : 192
Book Description
Publisher:
ISBN:
Category : Air conditioning
Languages : en
Pages : 192
Book Description
Research and Technology Program Digest Flash Index
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 794
Book Description
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 794
Book Description
Advanced Extravehicular Protective Systems Study, Volume 2
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 544
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 544
Book Description
Bibliography of Scientific and Industrial Reports
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1020
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1020
Book Description