Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbnews!cbnews!military From: tohall@mars.lerc.nasa.gov (Dave Hall (Sverdrup)) Newsgroups: sci.military Subject: Re: F-117A performance? Message-ID: <1991Feb13.032433.27305@cbnews.att.com> Date: 13 Feb 91 03:24:33 GMT References: <1991Jan23.043709.7563@cbnews.att.com> <1991Feb4.065635.21784@cbnews.att.com> <1991Feb5.043703.6484@cbnews.att.com> <1991Feb7.021146.4777@cbnews.att.com> Sender: military@cbnews.att.com (William B. Thacker) Organization: NASA Lewis Research Center Lines: 23 Approved: military@att.att.com From: tohall@mars.lerc.nasa.gov (Dave Hall (Sverdrup)) A followup to this message: | The F-18 is also designed with an inherent pitch instability. This allows | it to pitch up rather quickly, while the computer gives the plane the | illusion of great stability. F-18 drivers often comment on how they love | to fly it because it "basically flies itself", the pilot just needs to | point where he wants to go. Back in 86 or 87 I worked on an F/A-18 flight test airplane at NWC/China Lake. It was either a late development prototype or an early production model that had been "donated" for weapons system integration work. It had a unique toggle switch on the control panel labeled "SPIN RECOVERY". I was told that the software for the flight control computer still had a few bugs in it during the early days. Throwing this switch would supposedly tell the computer to enter a "safe" mode, applying some sort of spin recovery control sequence. Later birds supposedly did not need this switch. Any body out there know if this switch still exists in fleet-deployed Hornets? Just curious. E-mail answers and I will post a summary. Our esteemed moderator sure is busting his tail these days, eh?