NASA STTR 2008 Solicitation


PROPOSAL NUMBER: 08-2 T9.01-9919
RESEARCH SUBTOPIC TITLE: Technologies for Human & Robotic Space Exploration Propulsion Design and Manufacturing
PROPOSAL TITLE: Thermal Stir Welding of High Strength and High Temperature Alloys for Aerospace Applications

NAME: Keystone Synergistic Enterprises, Inc. NAME: Mississippi State University
STREET: 698 SW Port Saint Lucie Blvd., Suite 105 STREET: P.O. Box 6156
CITY: Port Saint Lucie CITY: Mississippi State
STATE/ZIP: FL  34953 - 1565 STATE/ZIP: MS  39762 - 6156
PHONE: (772) 343-7544 PHONE: (662) 325-7396

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Bryant Walker
698 SW Port Saint Lucie Blvd., Suite 105
Port Saint Lucie, FL 34953 - 1565
(772) 772-7544

Estimated Technology Readiness Level (TRL) at beginning and end of contract:
Begin: 4
End: 5

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
The Keystone and MSU team propose to build on the successful feasibility demonstration conducted during Phase I to complete the development of solid-state joining of high strength and temperature alloys utilizing the Thermal Stir Welding process. The focus alloy for this project is Haynes 230; the alloy of choice typically utilized in rocket engine nozzel skirts. This class of alloy is difficult to fusion weld and with the successful Phase I demonstratipon has now been shown weldable using solid-state methods. Therefore, the Keystone team is proposing to utilize a Thermal Stir Welding process; a solid-state welding process that decouples the stirring and heating features of the process to enable optimization of each key process parameter. By independently controlling and optimizing these process parameters, the best metal working parameters can be established and utilized to plasticize and stir the Hanyes 230 alloy. Achievement of this objective will enable superior mechanical properties in the weld joint and thus maximize the capability of the weld for the intended application. During Phase II the Keystone team will complete process development and demonstrate TRL-4 readiness by producing a 24" diameter subscale nozzel skirt for testing and evaluation by NASA.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Solid-state welding of high strength and temperature alloys is required to support the Constallization and NASA ARES systems. Specifically, haynes 230 is a high strength and high temperature alloy utilized in the engine nozzel skirt. The proposed Phase II STTR program will complete process development on this alloy and produce experimental components for testing and evaluation by NASA.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
Potentila non-NASA applications include thermal stir welding of high strength and temperature alloys for aerospace applicatioons; specifically, military aqnd commercial gtas turbine engines. Non-aerospace applications include component welding for chemical processing and heat exchangers industries.

TECHNOLOGY TAXONOMY MAPPING (NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.)
Aircraft Engines
Earth-Supplied Resource Utilization
Launch and Flight Vehicle

Form Generated on 05-25-10 13:36