Author
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Topic: Shuttle landing analyst A. Hochstein (1938-2013)
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Robert Pearlman Editor Posts: 42988 From: Houston, TX Registered: Nov 1999
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posted 11-02-2013 03:41 PM
The Houston Chronicle reports that Alan Hochstein passed away Friday (Nov. 1) in Garland, Texas. He was 75. His career included work at Lockheed Aircraft in California and Marietta, Georgia, LTV in Grand Prairie, Texas, McDonnell Douglas in Houston, Rockwell and United Space Alliance in Webster, Texas. He received the Manned Flight Awareness Honoree Award from NASA and the Silver Snoopy Award from the Astronauts for his work on the approach and landing phase of Shuttle Flights. In 2009, former space shuttle program manager Wayne Hale wrote about Hochstein, who served as a senior shuttle landing analyst. At our Flight Techniques meetings, Alan was a frequent presenter showing what had been learned, advising of the best techniques. At one period we experienced a number of landings that were shorter than desirable - still on the runway, but consistently closer to the threshold than comfortable. Alan analyzed hundreds of combinations of factors over a several dozen landings looking for correlations. Nothing seemed to correlate, except one: "If you cross the threshold low, you are likely to touch down short."Now that may seem obvious in retrospect. If a glider comes in low, any pilot would intuitively expect a short touchdown. But it was only obvious in retrospect. And any number of other correlations that common sense might have suggested were simply not borne out by the data. So we called this "Hockstein's Law": If you cross the threshold low, you will touch down short. The entire community worked very hard with the pilots to improve techniques to be higher at threshold crossing and thereby the incidence of short touchdowns was significantly reduced. |
randy Member Posts: 2176 From: West Jordan, Utah USA Registered: Dec 1999
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posted 11-02-2013 04:15 PM
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David Carey Member Posts: 782 From: Registered: Mar 2009
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posted 11-02-2013 05:37 PM
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dss65 Member Posts: 1156 From: Sandpoint, ID, USA Registered: Mar 2003
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posted 11-02-2013 11:08 PM
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jasonelam Member Posts: 691 From: Monticello, KY USA Registered: Mar 2007
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posted 11-03-2013 08:12 PM
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GACspaceguy Member Posts: 2476 From: Guyton, GA Registered: Jan 2006
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posted 11-04-2013 04:32 AM
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East-Frisian Member Posts: 586 From: Germany Registered: Apr 2005
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posted 11-04-2013 12:29 PM
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Gilbert Member Posts: 1328 From: Carrollton, GA USA Registered: Jan 2003
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posted 11-05-2013 12:02 PM
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Philip Member Posts: 5952 From: Brussels, Belgium Registered: Jan 2001
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posted 11-06-2013 10:46 AM
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Kite Member Posts: 831 From: Northampton UK Registered: Nov 2009
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posted 11-13-2013 04:56 PM
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Ronpur Member Posts: 1211 From: Brandon, Fl Registered: May 2012
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posted 11-13-2013 07:29 PM
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