AN ASSESSMENT OF THE THERMOSTRUCTURAL PERFORMANCE AND FEASIBILITY OF USING ROTATED PLY STACKING FOR CARBON-CARBON CLOTH BASED NOZZLE COMPONENTS

Award Information
Agency:
National Aeronautics and Space Administration
Branch:
N/A
Amount:
$497,914.00
Award Year:
1992
Program:
SBIR
Phase:
Phase II
Contract:
N/A
Agency Tracking Number:
17079
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Pda Engineering
2975 Redhill Ave, Costa Mesa, CA, 92626
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE SENSITIVITY OF THE THERMOSTRUCTURAL PERFORMANCE OF ROCKET NOZZLES TO CHANGES IN CARBON-CARBON COMPOSITE MATERIAL PROPERTIES HAS BEEN A SIGNIFICANT PROBLEM. RESULTSOF AN AIR FORCE STUDY HAVE CLEARLY INDICATED THAT SIGNIFICANT GAINS IN STRUCTURAL RELIABILITY COULD BE ACHIEVED BY ADOPTING A ROTATED PLY STACKING SEQUENCE WITH WCA-BASED, TWO-DIMENSIONAL CARBON-CARBONS. THIS PROJECT WILL EXAMINE THE POTENTIAL FOR IMPROVEMENT AFFORDED BY USING A ROTATED PLY STACKING SEQUENCE. THE STUDY WILL ENTAIL CONDUCTING THERMOSTRUCTURAL ANALYSES OF THE CCT-4 MOTOR, USING A CARBON-CARBON EXIT CONE THAT FEATURES A ROTATED PLY CONSTRUCTION. A QUANTITATIVE ASSESSMENT WILL BE MADE OF THE DEGREE OF IMPROVEMENT AFFORDED BY A ROTATED PLY CONSTRUCTION; THE OPTIMUM PLY STACKING ARRANGEMENT WILL BE IDENTIFIED AS WELL. PRODUCEABILITY STUDIES WILL BE CONDUCTED WITH INFORMATION FROM MATERIAL SUPPLIERS; THEY WILL ASCERTAIN THE FEASIBILITY OF MANUFACTURING ROTATED PLY PATTERNS SUITABLE FOR CARBON-CARBON, CLOTH-NOZZLE COMPONENTS, AS WELL AS IDENTIFY ANY POTENTIAL DIFFICULTIES OR LIMITATIONS INHERENT IN ROTATED PLY CONSTRUCTION. THE SENSITIVITY OF THE THERMOSTRUCTURAL PERFORMANCE OF ROCKET NOZZLES TO CHANGES IN CARBON-CARBON COMPOSITE MATERIAL PROPERTIES HAS BEEN A SIGNIFICANT PROBLEM. RESULTSOF AN AIR FORCE STUDY HAVE CLEARLY INDICATED THAT SIGNIFICANT GAINS IN STRUCTURAL RELIABILITY COULD BE ACHIEVED BY ADOPTING A ROTATED PLY STACKING SEQUENCE WITH WCA-BASED, TWO-DIMENSIONAL CARBON-CARBONS. THIS PROJECT WILL EXAMINE THE POTENTIAL FOR IMPROVEMENT AFFORDED BY USING A ROTATED PLY STACKING SEQUENCE. THE STUDY WILL ENTAIL CONDUCTING THERMOSTRUCTURAL ANALYSES OF THE CCT-4 MOTOR, USING A CARBON-CARBON EXIT CONE THAT FEATURES A ROTATED PLY CONSTRUCTION. A QUANTITATIVE ASSESSMENT WILL BE MADE OF THE DEGREE OF IMPROVEMENT AFFORDED BY A ROTATED PLY CONSTRUCTION; THE OPTIMUM PLY STACKING ARRANGEMENT WILL BE IDENTIFIED AS WELL. PRODUCEABILITY STUDIES WILL BE CONDUCTED WITH INFORMATION FROM MATERIAL SUPPLIERS; THEY WILL ASCERTAIN THE FEASIBILITY OF MANUFACTURING ROTATED PLY PATTERNS SUITABLE FOR CARBON-CARBON, CLOTH-NOZZLE COMPONENTS, AS WELL AS IDENTIFY ANY POTENTIAL DIFFICULTIES OR LIMITATIONS INHERENT IN ROTATED PLY CONSTRUCTION.

* information listed above is at the time of submission.

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