D. Pratt

Argos Engineeirng

44 Argos
Laguna Niguel CA, 92677

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Forensic engineering services particularly focused on the aerospace industry.
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Licenses: Professional Engineer California (Mechanical Branch) Professional Organizations: National Academy of Forensics Engineers National Society of Professional Engineers American Society of Mechanical Engineers American Society of Civil Engineers Education: B.S.M.E. - California State University, Fullerton M.S.M.E. - California State University, Fullerton Ph.D. - Civil Engineering(Airframe) Structural Mechanics - University of California, Irvine Completed the eight-course Engineering Management Program at California Institute of Technology as well as several follow-on courses related to new product development. Completed Textrons two week "Executive Development Program" (Administered by the Harvard Business School) Employment: Hartwell Corporation, Placentia, CA. August 1 2000 June 1 2005 Vice President, Engineering. Manages the new product development and R&D functions, comprising 26 employees. Responsible for all engineering-related activities including intellectual property, technical publications, and products liability. Co-inventor of a line of secure cockpit door latches. Led the development and commercialization for secure cockpit door latches, as well as engine nacelle latching systems for A318, A380, A340, B-787 and ARJ21, among others. Textron Aerospace Fasteners (Cherry Textron), Santa Ana, CA. March 1988 July 30 2000 Vice President, Research and Development- Oversaw the product development of aerospace and industrial fasteners. Administered the fastener R&D department and cad drafting/document control activity. Managed the patent activity and acted as licensing liaison. Active in license and joint venture negotiations. Founded Textron Sports Technology and acted as General Manager of that business until it was transferred to a sister division. Division products liability coordinator. Initiated collaborative projects with local universities. Monogram Aerospace Fasteners Inc., Commerce, CA. Feb. 1979-March 1988 Engineering Manager- Managed the new product development and product engineering activities as well as cad drafting/document control and intellectual property. Company liaison for industry and government standards organizations (NASC, AMFRG, FTDG, FEOPS, and ISO). Responsible for all product qualifications, applications testing and development of joint allowables. Reported to general manager. Invented and led the development of Composi-Lok (I and II) and Visu-Lok II blind bolts. Olympic Fastening Systems, Downey, CA. August 1969-Feb. 1979 Project Engineer, R&D- Held various engineering positions in Manufacturing Engineering and R&D since beginning as a draftsman in 1969. Responsibilities included sustaining engineering, progressive header tool design, installation tool development and development of fastener allowables for inclusion in MIL-HDBK-5. Honors & Achievements: Registered Professional Engineer (Mechanical Engineer) (Feb. 1979, California) Tau Beta Pi (1995) Holder of thirty-one issued U.S. patents as well as dozens of foreign patents. Other patents are pending at the PTO. 4,376,604 4,548,533 4,747,204 5,046,348 5,131,107 5,378,098 5,938,384 6,261,062 4,451,189 4,659,271 4,752,169 5,052,870 5,152,648 5,620,287 5,941,539 6,866,226 4,457,652 4,659,272 4,767,248 5,056,973 5,333,980 5,692,865 5,957,642 6,866,227 4,537,542 4,681,494 4,967,463 5,066,179 5,354,160 5,884,923 6,171,038 Other: International Chairman of ISO/TC20/SC4 WG8 (Aerospace/Fasteners/Rivets), Fall 1997 Through July 2000. Immediate past Chairman of the Industrial Fasteners Institute Division II (Aerospace) technical committee, since Spring 1997. Chairman of the Mil-Handbook-5 Fastener-Industry Working Group (FIWG), Spring 1998 through July 2000. Member of the FAA ARACS working Group that drafted TSO-C148 (Technical Standard Order) for aerospace fasteners (1996-1997). U.S. Army 1967 - 1969 (Honorable Discharge). Publications "Fastening of Advanced Composites", NASA conference, 1983, Seattle, WA. Analytical Modeling of Bolted Lap Joint Load-Elongation Behavior, Journal of Aerospace Engineering, Jan. 2002 (ASCE) Comparative Load-Elongation Behavior of Single-Bolted and Dual-Bolted Lap Joints, Journal of Aerospace Engineering, April 2002 (ASCE) The Influence of Conical Head Geometry on the Slip Resistance of Bolted Joints, Journal of Aerospace Engineering, October 2002 (ASCE) Legal Experience UNITED STATES DISTRICT COURT SOUTHERN DISTRICT OF NEW YORK IN RE HELICOPTER CRASH AT THE 60th STREET HELIPORT, NEW YORK, NEW YORK 98 CIV 3442 ON APRIL 15th 1997 In 1997 a Colgate-Palmolive corporate helicopter crashed immediately after takeoff into New York's East River, killing one occupant and severely injuring two others. The NTSB's probable cause was tail boom fatigue failure due to substitution of solid rivets with Cherry Max blind rivets during a recent repair procedure. At the time, FAA advisory circulars authorized replacement of certain solids with Cherry-Lock blind rivets, but not CherryMax. Since the failed tail boom separated from the fuselage at the repair site, the NTSB's conclusion was that the CherryMax rivets were weaker in fatigue strength than either solids or Cherry-Lock rivets, and therefore failed prematurely. Subsequent inspections reveled that the fuselage failure actually started some distance from the repair site and was not influenced by the choice of Cherry Max over solids or Cherry Lock blind rivets. A crossection of a CherryMax in the failed structure showed the fastener to be free of defects. A review of historical lap joint fatigue test results showed that in some combinations of panel thickness the CherryMax rivets had lower joint fatigue strength than Cherry-Lock rivets. That was not necessarily the case for the joint in the failed tail boom, which had a complex geometry difficult to replicate for testing purposes. Nevertheless, Cherry Max rivets were touted as suitable replacements for Cherry Lock by Cherry Textron marketing literature, without reference to the joint configuration. The case involved three days (24 hours total) of video-taped deposition of Dr. while he was Vice President of Research and Development for Textron Aerospace Fasteners ("Cherry Textron"). Subsequent to his leaving to take another position at Hartwell Corporation, Dr. served as an Expert Witness for Jones Hirsch Connors and Bull for another two years. Tasks included reviewing and analyzing all depositions and expert testimony and on-site inspections of the wreckage. The case was settled before trial, with minimum impact to Textron. Other Cases Calgary Canada 1988 Winter Olympics Skating Oval---Roof leakage alledgely caused by defective commercial blind fasteners. Settled during arbitration. Functioned as liasion with outside counsel, and in-house expert. Assisted with arbitration. Third-party lawsuit against Hartwell Corporation alleging that defective latching mechanism failed to maintain cargo door in secured position. During flight the cargo door opened and exiting cargo impacted the tail rotor, resulting in a crash and injuries. Functioned as liasion with outside counsel and in-house expert. This case is stil pending. Federal Trade Commission (FTC) action against Textron (Docket # 9226) regarding acquisition of Avdel PLC. Included deposition plus five days of testimony in front of the FTC in relation to aerospace fasteners (engineering, joint strength, markets, etc). Patent and/or Trademark Infringement Olympic Fatening Systems v. Monogram Aerospace Fasteners (1979) Huck International v. Cherry Div. of Textron Inc. (1995) Cherry Div. of Textron Inc. v. Allfast Inc. (1998) Hartwell Corp. v. Avibank Div. of SPS Inc. (2003) Hartwell Corp. v. Harper Engineering (2005) Hartwell Corp. v. Adams-Rite (2005)
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