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#11
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![]() "G.R. Patterson III" wrote in message ... "James M. Knox" wrote: Fuel problem??? No. The BBC reported yesterday that an explosion was seen on one of the aircraft before it went down and that the other plane sent indications of being hijacked (I assume something like a transponder code) shortly before disappearing. The reporter I just heard on the news here said someone hit the SOS button before the plane dropped off radar. Allen |
#12
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![]() "Allen" wrote in message m... The reporter I just heard on the news here said someone hit the SOS button before the plane dropped off radar. Hmmm. Exactly which button would that be? I guess all Russian airliners must have a big, red button in the middle of the panel marked "SOS" (or maybe it's the little plastic gag "panic button" that Sporty's sells?). Sounds like a reliable report to me. -- David Herman N6170T 1965 Cessna 150E Boeing Field (BFI), Seattle, WA - - - - - - - - - - - - - - - - - - - - - - - - - - Visit the Pacific Northwest Flying Forum: http://www.smartgroups.com/groups/pnwflying |
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On Wed, 25 Aug 2004 at 20:51:11 in message
, Kyle Boatright wrote: What fuel problem would cause a jet to go down *right now*? Airliners glide decently and a crew with even a little training would get off a mayday call and try and work the situation in the time it would take a flamed-out airliner to go down. A back of the envelope figure is that an airliner probably has a sink rate of 2500 fpm or less in glider mode... Remember the Gimli Glider? It glided for 10-15 minutes before landing, and a Soviet airliner probably wouldn't do much worse... More recently wasn't there an Airbus (I forget which type) that lost fuel over the Atlantic and glided some 70 nm(?) to the Azores and had enough height left for a circuit before landing? Modern airliners are efficient partly because they have very good Lift/Drag ratios. I agree that the sink rate is around 2000 ft/min or so but it is Lift/drag that gives you the distance. I guess that airliners cruise around 250 knots IAS and that that is near the optimum Lift/Drag ratio point. -- David CL Francis |
#14
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On 8/26/04 9:41 AM, in article
, "James M. Knox" wrote: My thought is Chechen Islamist terrorists attempting to make a statement about the upcoming Chechen elections. You are right, of course. At the time all I had heard was that they both went down, within minutes of each other. No word about radio calls or not. Based on later news, I agree that fuel issues are VERY unlikely. Unfortunately, that brings up the distinct probability that it was deliberate. jmk Of what use is a terrorist act if nobody knows it's terrorism? If this is terrorism in order to make a statement, the guys responsible need to work a bit more work on their press releases. -- Jeff 'The Wizard of Draws' Bucchino Cartoons with a Touch of Magic www.wizardofdraws.com www.cartoonclipart.com |
#15
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![]() "Wizard of Draws" wrote in message news:BD53EFFD.1E032%jeffbREMOVE@REMOVEwizardofdraw s.com... Of what use is a terrorist act if nobody knows it's terrorism? If this is terrorism in order to make a statement, the guys responsible need to work a bit more work on their press releases. -- Maybe both their missions failed, in the same manner that the flight that crashed in PA failed here, and because their real objectives weren't met they felt there was no need to bring attention to themselves. It is very hard to draw conclusions under the circumstances. |
#16
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![]() "David CL Francis" wrote in message ... On Wed, 25 Aug 2004 at 20:51:11 in message , Kyle Boatright wrote: What fuel problem would cause a jet to go down *right now*? Airliners glide decently and a crew with even a little training would get off a mayday call and try and work the situation in the time it would take a flamed-out airliner to go down. A back of the envelope figure is that an airliner probably has a sink rate of 2500 fpm or less in glider mode... Remember the Gimli Glider? It glided for 10-15 minutes before landing, and a Soviet airliner probably wouldn't do much worse... More recently wasn't there an Airbus (I forget which type) that lost fuel over the Atlantic and glided some 70 nm(?) to the Azores and had enough height left for a circuit before landing? Modern airliners are efficient partly because they have very good Lift/Drag ratios. I agree that the sink rate is around 2000 ft/min or so but it is Lift/drag that gives you the distance. I guess that airliners cruise around 250 knots IAS and that that is near the optimum Lift/Drag ratio point. -- David CL Francis David, Agree with your L/D vs glide range comment. My point went to the idea that an airliner's sink rate is low enough that even with a complete flame out (unless the airplane was already at very low altitude), there should be plenty of time to get off a Mayday call and possibly relate the basics of the problem to a controller. KB |
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On Thu, 26 Aug 2004 at 22:02:30 in message
, Kyle Boatright wrote: Agree with your L/D vs glide range comment. My point went to the idea that an airliner's sink rate is low enough that even with a complete flame out (unless the airplane was already at very low altitude), there should be plenty of time to get off a Mayday call and possibly relate the basics of the problem to a controller. In Macarthur Job's book where he describes the events when the BA 747 lost all 4 engines near Java he says that with all engines stopped at 37,000 feet the aircraft should take 23 minutes to sea level. That certainly reinforces your point! It also suggests a 1600 ft/minute descent rate. If the speed was 250k then, if I am right, it also implies a glide L/D of around 15. Airliners are _not_ bricks! :-) -- David CL Francis |
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