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Design Development of Unitized Titanium Structure

[+] Author Affiliations
Daniel Groneck

The Boeing Company, St. Louis, MO

Dave Harmon

PCC Structurals, Inc., Portland, OR

Paper No. 2001-GT-0450, pp. V001T01A007; 6 pages
  • ASME Turbo Expo 2001: Power for Land, Sea, and Air
  • Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery
  • New Orleans, Louisiana, USA, June 4–7, 2001
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7850-7
  • Copyright © 2001 by ASME


Traditional airframe primary structure is fabricated from wrought product forms that are transformed by machining, forming, and joining into structural components. These individual parts are assembled together by fasteners to create the structure. Under the program reported herein, and in conjunction with a casting vendor, prototype titanium (Ti-6Al-4V) cast airframe components were designed and fabricated. The typical overall dimensions of each casting are 50 inches × 40 inches × 30 inches (127 cm × 102 cm × 76 cm), and weigh approximately 190 pounds (86 kg) per casting. The castings were modeled on generic aircraft fuselage structure that incorporated smooth inner moldline surface and integral webs and keels, capped by a T-element, web stiffeners, access holes, and other detail features. Multiple castings are joined to create the airframe structure. A rapid prototyping method was utilized to create the pattern, which eliminated the requirement for expensive metal tooling. The prototype castings successfully demonstrated the producibility of this generic airframe structure.

Copyright © 2001 by ASME
Topics: Design , Titanium



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