Top News on Graham Warwick

  • NASA tackles vibration risk in Ares I launcher


    <P>NASA has identified possible solutions to a potential vibration risk to the crew on the <A href="http://www.nasa.gov/mission_pages/constellation/ares/aresI.html" target=_blank>Ares&nbsp;I launch vehicle</A>. But the US space agency does not believe the problem is as serious as it first thought.</P> <P>The issue is a potential coupling between thrust oscillations in the solid rocket motor (SRM) first stage and vibration modes in the launch vehicle. Identified in October 2007, the problem is the top risk in the&nbsp;Ares I programme, says Rick Gilbrech, associate administrator, exploration systems.</P> <P>The frequency of pressure pulses in the five-segment SRM&nbsp;is close to the natural frequency of the second longitudinal vibration mode of the complete launch vehicle. This creates the risk of a "pogo stick" resonant vibration, says Garry Lyles, associate director for technical management, <A href="http://www.nasa.gov/centers/marshall/home/index.html" target=_blank>Marshall&nbs


  • Other News for Graham Warwick

  • Pilot shortages highlight the need for advanced flight simulator technology


    The commercial flight simulation market has been shaped by the tension between the thrust of technology and the drag of...


  • US Air Force B-1 to fly supersonic on synfuel


    <P>The US Air Force plans make the first supersonic flight on synthetic jet fuel this week, using a <A ...


  • NASA tackles vibration risk in Ares I launcher


    <P>NASA has identified possible solutions to a potential vibration risk to the crew on the <A ...


  • News Listings for Graham Warwick

  • The future for Flight International

    News | 02 Jan 2009 00:01 | Murdo Morrison

    The launch of flightglobal.com has taken the wider Flight brand to a much bigger online audiencehttp://www.flightglobal.com/news/articles/The-future-for-Flight-International-320432/
  • Pilot shortages highlight the need for advanced flight simulator technology

    News | 22 Apr 2008 09:00 | Graham Warwick

    The commercial flight simulation market has been shaped by the tension between the thrust of technology and the drag of regulation. Technology enables synthetic...http://www.flightglobal.com/news/articles/Pilot-shortages-highlight-the-need-for-advanced-flight-simulator-technology-223122/
  • US Air Force B-1 to fly supersonic on synfuel

    News | 18 Apr 2008 05:00 | Graham Warwick

    <P>The US Air Force plans make the first supersonic flight on synthetic jet fuel this week, using a <A href="http://www.boeing.com/defense-space/military/b1-lancer/index.html" target=_blank>Rockwell&nbsp;B-1B</A> bomber powered by <A href="http://www.geae.com/engines/military/f101/spotlight_b1b.html" target=_blank>General&nbsp;Electric F101</A> afterburning engines.</P> <P>The flight will be another milestone in USAF plans to certify its entire inventory of aircraft to use a 50:50 blend of synthetic and conventional jet fuel by early 2011.</P> <P>A B-1B Lancer based at <A href="http://www.dyess.af.mil/" target=_blank>Dyess&nbsp;AFB</A> in Texas&nbsp;will make the supersonic demonstration flight. The USAF has already certified the Boeing B-52 bomber and C-17 airlifter to fly on synthetic fuel.</P> <P><IMG style="WIDTH: 445px; HEIGHT: 230px" alt="" src="../assets/getAsset.aspx?ItemID=21886" border=0><BR><STRONG><FONT size=1>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;http://www.flightglobal.com/news/articles/US-Air-Force-B-1-to-fly-supersonic-on-synfuel-222284/
  • NASA tackles vibration risk in Ares I launcher

    News | 04 Apr 2008 22:00 | Graham Warwick

    <P>NASA has identified possible solutions to a potential vibration risk to the crew on the <A href="http://www.nasa.gov/mission_pages/constellation/ares/aresI.html" target=_blank>Ares&nbsp;I launch vehicle</A>. But the US space agency does not believe the problem is as serious as it first thought.</P> <P>The issue is a potential coupling between thrust oscillations in the solid rocket motor (SRM) first stage and vibration modes in the launch vehicle. Identified in October 2007, the problem is the top risk in the&nbsp;Ares I programme, says Rick Gilbrech, associate administrator, exploration systems.</P> <P>The frequency of pressure pulses in the five-segment SRM&nbsp;is close to the natural frequency of the second longitudinal vibration mode of the complete launch vehicle. This creates the risk of a "pogo stick" resonant vibration, says Garry Lyles, associate director for technical management, <A href="http://www.nasa.gov/centers/marshall/home/index.html" target=_blank>Marshall&nbshttp://www.flightglobal.com/news/articles/NASA-tackles-vibration-risk-in-Ares-I-launcher-222778/
  • More RFP changes delay USAF CSAR-X again

    News | 04 Apr 2008 12:45 | Graham Warwick

    Reselection of the CSAR-X combat search-and-rescue helicopter has been pushed back to October, as the US Air Force prepares to release yet another amendment...http://www.flightglobal.com/news/articles/More-RFP-changes-delay-USAF-CSAR-X-again-222729/
  • Lockheed tests F-35 navigation system using CATBird

    News | 04 Apr 2008 12:45 | Graham Warwick

    Lockheed Martin has flight-tested the F-35 Joint Strike Fighter's navigation modes using the Co-operative...http://www.flightglobal.com/news/articles/Lockheed-tests-F-35-navigation-system-using-CATBird-222728/