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On Feb 15, 1:44*pm, Bertie the Bunyip wrote:
"Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote innews:nrSdnQ8KTvrqRCnanZ2dnUVZ_gudnZ2d@wideopenwe st.com: "Bertie the Bunyip" wrote in message .. . ... There's nothing made up about "No sparks, no power" I wouldn't buy one because of this. My club was looking at one ofr a Cherokee and decided against it because of the lack of limp home capability. Right. MX has informed us of the risks associated with these electronic engine management systems on several ocassions. In particular regard to this installation? I have no problem with computer governed engines, once tey aren't reliant on th ecomputer to run which isn't the case with any other engine I know of. I see your point and I think it's a good one. As I said before, I smell the rat of marketing... Cheers |
#2
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WingFlaps,
As I said before, I smell the rat of marketing... As I said befo http://en.wikipedia.org/wiki/Common_rail and http://en.wikipedia.org/wiki/Diesel_engine -- Thomas Borchert (EDDH) |
#3
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Thomas Borchert wrote in
: WingFlaps, As I said before, I smell the rat of marketing... As I said befo http://en.wikipedia.org/wiki/Common_rail and http://en.wikipedia.org/wiki/Diesel_engine That doesn't address anything. Bertie |
#4
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Bertie,
That doesn't address anything. You're almost as funny as MX with your taking things out of context at will. He's better at it, though. -- Thomas Borchert (EDDH) |
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Thomas Borchert wrote in
: Bertie, That doesn't address anything. You're almost as funny as MX with your taking things out of context at will. He's better at it, though. Yeah right. nice try. bertie |
#6
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WingFlaps wrote in
: On Feb 15, 1:44*pm, Bertie the Bunyip wrote: "Capt. Geoffrey Thorpe" The Sea Hawk At Wow Way D0t C0m wrote innews:nrS : "Bertie the Bunyip" wrote in message .. . ... There's nothing made up about "No sparks, no power" I wouldn't buy one because of this. My club was looking at one ofr a Cherokee and decided against it because of the lack of limp home capability. Right. MX has informed us of the risks associated with these electronic engine management systems on several ocassions. In particular regard to this installation? I have no problem with computer governed engines, once tey aren't reliant on th ecomputer to run which isn't the case with any other engine I know of. I see your point and I think it's a good one. As I said before, I smell the rat of marketing... Hmmm, could be. Lots of turboprops have fadecs now. The latest Pratts, I beleive. I was having this ocnverstation with an FO who had come off a Dash-8 and he told me the latest version of it ( Q400 or something?) had them. I said "yeah, but they don't have this problem with power, though, surely" and he told me that they probably did since power was definitely required to run the fadec. They tell us very little about the innnards of these fuel units, but I cant see them icencing an airliner without enough system seperation to ensure that one failure doesn't kill two engines at once. I can't see the point of having a Twin star when it can effectively be a single engine airplane if the lights go out. i know someone who bought one on behalf of his club and he agreed with me that it was a feature of the design, but insisted that it will NEVER be a problem as long as you follow the POH. If anyone here besides Anthony, met this guy RL, No more confirmation would be necessary that this was a baaaaad idea. Bertie |
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On Fri, 15 Feb 2008 13:26:01 +0000 (UTC), Bertie the Bunyip
wrote: Hmmm, could be. Lots of turboprops have fadecs now. The latest Pratts, I beleive. I was having this ocnverstation with an FO who had come off a Dash-8 and he told me the latest version of it ( Q400 or something?) had them. I said "yeah, but they don't have this problem with power, though, surely" and he told me that they probably did since power was definitely required to run the fadec. They tell us very little about the innnards of these fuel units, but I cant see them icencing an airliner without enough system seperation to ensure that one failure doesn't kill two engines at once. At least in the Meridian they have a manual override lever which is directly connected to the FCU via cable linkage. I know it's not FADEC, but maybe they have a similar emergency mode in the -8. I can't see the point of having a Twin star when it can effectively be a single engine airplane if the lights go out. i know someone who bought one on behalf of his club and he agreed with me that it was a feature of the design, but insisted that it will NEVER be a problem as long as you follow the POH. If anyone here besides Anthony, met this guy RL, No more confirmation would be necessary that this was a baaaaad idea. The specific problem the crash flight had (draining the battery and killing the FADECs) was corrected via AD requiring backup battery to the FADEC in case you screw up the ships battery. Each engine has a FADEC, each engine has it's own alternator and backup FADEC battery. For that specific problem they've now put in redundancy. |
#8
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Peter Clark wrote in
: On Fri, 15 Feb 2008 13:26:01 +0000 (UTC), Bertie the Bunyip wrote: Hmmm, could be. Lots of turboprops have fadecs now. The latest Pratts, I beleive. I was having this ocnverstation with an FO who had come off a Dash-8 and he told me the latest version of it ( Q400 or something?) had them. I said "yeah, but they don't have this problem with power, though, surely" and he told me that they probably did since power was definitely required to run the fadec. They tell us very little about the innnards of these fuel units, but I cant see them icencing an airliner without enough system seperation to ensure that one failure doesn't kill two engines at once. At least in the Meridian they have a manual override lever which is directly connected to the FCU via cable linkage. I know it's not FADEC, but maybe they have a similar emergency mode in the -8. I can't see the point of having a Twin star when it can effectively be a single engine airplane if the lights go out. i know someone who bought one on behalf of his club and he agreed with me that it was a feature of the design, but insisted that it will NEVER be a problem as long as you follow the POH. If anyone here besides Anthony, met this guy RL, No more confirmation would be necessary that this was a baaaaad idea. The specific problem the crash flight had (draining the battery and killing the FADECs) was corrected via AD requiring backup battery to the FADEC in case you screw up the ships battery. Each engine has a FADEC, each engine has it's own alternator and backup FADEC battery. For that specific problem they've now put in redundancy. But the fadec still relies on electrics to make the engine run. I knew about the AD, BTW. Bertie |
#9
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WingFlaps wrote:
I see your point and I think it's a good one. As I said before, I smell the rat of marketing... Cheers You keep want to blame Marketing. Sure they may have said we need to have an easy to use FADEC system but it was the engineers that decided not to have the limp home mode. |
#10
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Gig,
Sure they may have said we need to have an easy to use FADEC system but it was the engineers that decided not to have the limp home mode. In a way, they do (if not in the way it used to be installed in the DA42): the emergency battery. I guess what I'm trying to say is: This engine is different than the old Lycs and TCMs. Doesn't mean it's worse. Just different. -- Thomas Borchert (EDDH) |
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