NDLI: Initial investigation of cryogenic wind tunnel model filler materials

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Initial investigation of cryogenic wind tunnel model filler materials

Content Provider	NASA Technical Reports Server (NTRS)
Author	Firth, G. C.
Copyright Year	1985
Description	Filler materials are used for surface flaws, instrumentation grooves, and fastener holes in wind tunnel models. More stringent surface quality requirements and the more demanding test environment encountered by cryogenic wind tunnels eliminate filler materials such as polyester resins, plaster, and waxes used on conventional wind tunnel models. To provide a material data base for cryogenic models, various filler materials are investigated. Surface quality requirements and test temperature extremes require matching of coefficients of thermal expansion or interfacing materials. Microstrain versus temperature curves are generated for several candidate filler materials for comparison with cryogenically acceptable materials. Matches have been achieved for aluminum alloys and austenitic steels. Simulated model surfaces are filled with candidate filler materials to determine finishing characteristics, adhesion and stability when subjected to cryogenic cycling. Filler material systems are identified which meet requirements for usage with aluminum model components.
File Size	890597
Page Count	17
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19860001788
Archival Resource Key	ark:/13960/t03z34r4z
Language	English
Publisher Date	1985-09-01
Access Restriction	Open
Subject Keyword	Composite Materials High Reynolds Number Stability Surface Defects Fillers Shear Strength Aluminum Alloys Grooves Polyester Resins Surface Finishing Adhesion Waves Plasters Interfaces Thermal Expansion Simulation Smoothing Austenitic Stainless Steels Cryogenics Investigation Models Thermal Stresses Cryogenic Wind Tunnels Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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