WMUSIGPI
The $100,000,000 Question
- Joined
- Jan 23, 2003
- Posts
- 2,219
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LegacyDriver said:Also I should clarify.... The Legacy was tested to M 0.92 without Mach Tuck (it got tail flutter as you might expect on an unboosted elevator). The difference between stall and M 0.92 is well more than 130 knots at FL410. I am guessing stall and MMO/VMO (M 0.80) at 410 is 100 knots or so.
Just a guess but more than the CRJ.
I will look it up later.
The XR goes to 390 doesn't it?
LegacyDriver said:I compared notes with a buddy who flies CRJs. We went through the limitations and the dos and don'ts of both planes. The ERJ came out on top on just bout every item.
When do you need an APU above FL300? How about when both engines flame out and you need an airstart? Never heard of an EMB Doing that but it is nice to know you have it.
Gen failures? APU.
Pneumatics? APU.
The "P" engines were good. The "E" is fantastic.
All I know is I can hold at 200 knots at FL390 and I don't even see the top of the white arc yet. I know the CRJ doesn't have that luxury.
Someone mentioned telling the FADEC what to do for takeoff. That is because we have three thrust modes and the "computer" as you called it doesn't know which one to use any more than what flap setting to use. It is pilot selectable for a reason.
dojetdriver said:Um, I guess you didn't really read what I wrote previously. Is it just ExpressJet, or is the ERJ limited to Fl370? The Embraer website EVEN says it's 370. What are you doing at 390? Do you even fly the ERJ?
Well I suppose it's because our engines are powerful enough that a reduced thrust takeoff saving engine life is possible much of the time. Whether you would tell it you want reduced in the FMS like a Boeing or in the T/O MFD page like ours doesn't seem to make much difference.dojetdriver said:The FADEC "doesn't know which one to use", well, that's because the FADEC they went with is a little stupid. The J328 had FADEC's, didn't need to tell them anything. Didn't need to press buttons and tell it what to do on the ground, after take off, or a go around either. That plane wasn't even meant to compete with the ERJ/CRJ and it was more sophsticated than both of them. Just put the thrust lever in the detent or anywhere in between to get the desired effect.
pianoman said:I think he flies the Legacy Bizjet version, which can go to 410.
Well I suppose it's because our engines are powerful enough that a reduced thrust takeoff saving engine life is possible much of the time. Whether you would tell it you want reduced in the FMS like a Boeing or in the T/O MFD page like ours doesn't seem to make much difference.
LegacyDriver said:I have flown all of them but the XR. The "P" LRs would go right through the redline with ease.
W
The only limitations on the Legacy that differ from the 135 are MMO, ceiling, and weight. I compared airliner to airliner.
The XR I believe has the same MMO but I may be wrong.
At any rate, the EMB had better numbers in virtually every area we compared. The CRJ is also artificially restricted now by some companies so its ceiling and speed advantages are negated.
Don't know, never flew it. I never claimed to be an expert and I don't spout off facts about a plane I've never flown. You claim to have flow the ERJ but your posts don't recflect so. None of the ERJ's can "410 it dude".Just like your Legacy can "410 it dude", so can the Challenger and the Global.LegacyDriver said:Does your CRJ have a forward crew closet or do you have to walk all the way to the back and shove the bags in?
At least when we "410 it dude" we can do it for hours at time at fairly hefty weights with very wide speed margins unlike the CRJ. The XR has the same wing and engines and would perform very similarly there.
I don't know all the XR's numbers but I assumed it was a FL 390 airplane. If not, oh well. As stated some CRJ operators are restricting themselves to 370 like the 145LR.
We have a forward closet. It's not as big as yours though. It'll fit two bags, plus maybe a laptop or two, but you have to put them in carefully.LegacyDriver said:Does your CRJ have a forward crew closet or do you have to walk all the way to the back and shove the bags in?
Why would FL410 matter on a stage length of 300-400nm? I bet probably 70% of our flights are this range or less.At least when we "410 it dude" we can do it for hours at time at fairly hefty weights with very wide speed margins unlike the CRJ. The XR has the same wing and engines and would perform very similarly there.
I don't know all the XR's numbers but I assumed it was a FL 390 airplane. If not, oh well. As stated some CRJ operators are restricting themselves to 370 like the 145LR.
Um, dude, put the beer down. This bit of drivel already flowed out of your mouth. Word for word to be exact. See post #52 if you don't believe me.LegacyDriver said:Does your CRJ have a forward crew closet or do you have to walk all the way to the back and shove the bags in?
At least when we "410 it dude" we can do it for hours at time at fairly hefty weights with very wide speed margins unlike the CRJ. The XR has the same wing and engines and would perform very similarly there.
I don't know all the XR's numbers but I assumed it was a FL 390 airplane. If not, oh well. As stated some CRJ operators are restricting themselves to 370 like the 145LR.