Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbnews!cbnews!military From: d9bertil@dtek.chalmers.se (Bertil Jonell) Newsgroups: sci.military Subject: Re: Message-ID: <1991Feb7.013223.963@cbnews.att.com> Date: 7 Feb 91 01:32:23 GMT References: <1991Feb5.040524.4232@cbnews.att.com> Sender: military@cbnews.att.com (William B. Thacker) Organization: Chalmers University of Technology, Gothenburg, Sweden Lines: 28 Approved: military@att.att.com From: d9bertil@dtek.chalmers.se (Bertil Jonell) In article <1991Feb5.040524.4232@cbnews.att.com> boyd@necisa.ho.necisa.oz.au writes: >In article <1991Feb4.052511.15316@cbnews.att.com> voder!nsc!dtg.nsc.com!alan@decwrl.dec.com (Alan Hepburn) writes: >> >>... Can a pilot survive a punch out through >>a canopy? All Swedish Airforce planes with ejection seats are built so that the pilot can eject through the canopy and survive. It is however not recommendable. I know that the seat in the SK-60 trainer has a very high back that are designed to shatter the canopy and protect the pilots head during ejection. On the other hand, the checklist for emergencies says that the canopy lock shall be disengaged before ejection (this will cause the canopy to tear lose from the plane) probably because ejecting through the canopy is more hazardous and more or less unessesary in peacetime. One disadvantage from making the seat so that the pilot can punch out through the canopy is that the high seat back will hinder the backwards vision of the pilot in combat. The advantage is naturally that the pilot can eject faster and in a wider envelope. -bertil- -- >From the foolfile: "The Baltic states are not occupied" - Swedish Foreign Minister Sten Andersson