Bob Abernethy's SR-71 Logo (http://www.bobabernethy.com/)
Biographies, Blackbirds, Weibull, Ask Dr Bob, Weibull Products, Papers, Associates
History of the Blackbird Engine

SR-71 Introduction by Robert B Abernethy

The history of Pratt & Whitney including background on both the JT11-D-20, my engine, and the Suntan hydrogen turbojet are described in this link to the Roadrunners website: Pratt & Whitney, Aviation Pioneers of Groom Lake - Area 51, Nevada.
Robert Abernethy 2005, Made by Vegan Bob Designs (http://www.veganbob.com/)
Biographies SR-71 Blackbirds Weibull Ask Dr. Bob Weibull Products Papers, Pictures, and Presentations Associates Dr. Bob Abernethy's Email Address Vegan Bob Designs (http://www.veganbob.com/)