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economics (Read 4263 times)
Reply #15 -
Oct 30
th
, 2006 at 4:52pm
SimFly
Offline
Lieutenant Colonel
I love YaBB 1G - SP1!
Posts: 9
yeah well, i kinda thought i mentioned that method in my original post.
my question was if someone can give me the figures, either because he's been there and done that, or knows where i can find the figures of someone who's been there and done that, without me going out and buy a bunch of manuals that, even if the accuracy of the FS flight models is close enough, cost more money than i'm willing to spend on this hobby.
failing that, what other parameters are of relevance besides altitude (and here's the next question: "above sealevel", "pressure altitude", "density altitude"?) have to go into the algoritm to produce reliable and reproducable figures?
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Reply #16 -
Oct 30
th
, 2006 at 5:09pm
C
Offline
Colonel
Earth
Posts: 13144
Quote:
failing that, what other parameters are of relevance besides altitude (and here's the next question: "above sealevel", "pressure altitude", "density altitude"?) have to go into the algoritm to produce reliable and reproducable figures?
At the levels that an aircraft such as the Learjet would operate (and here's a point - are you in the US or somewhere else) you would be on the SPS (Standard pressure setting) of 1013mb, as you'd be operating above the transition altitude (anywhere between 2500ft to 4500ft normally in the UK, but fixed at 18000ft I believe in the US) - so at whatever FL you were operating at you would be at (for example) FL240 = 24000ft on 1013mb. (FL200=20000ft, FL350 = 35000ft etc). So that is taken into account.
Other factors that
could
be taken into account would be OAT (Outside Air Temperature), although that would of course be more relevant for take off/landing performance, but it would influence the air density etc.
I'm sure there are plenty of other factors but off the top of my head, I drawing a blank at the moment
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Reply #17 -
Oct 30
th
, 2006 at 8:24pm
Brett_Henderson
Offline
Colonel
EVERY OUTER MARKER SHOULD
BE AN NDB
Gender:
Posts: 3593
Quote:
for the "other issue":
i wonder who's of age here anyway, because wise guy remarks about typing cutting out the original subject is usually the mark of teenie boards.
I'd guess that the average member age here is near thirty. And even at that, I'd say that the maturity level those younger members is greater than their chronological age. Partly because the elder members try to keep the younger members on their toes; not only grammatically, but in general. Partly because the younger members return the favor and keep the old guys alert too.
When you visit a forum for the first time; even forgetting that your first impression is made by what (if any) pride you take in displaying your words/thoughts... it's always a good idea to respect the standards of that forum.
If a person would put as much effort into using proper grammar, and trying to spell correctly, as they do complaining about having it pointed out to them... everything would be ...... Oh nevermind
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Reply #18 -
Oct 30
th
, 2006 at 9:39pm
Mobius
Offline
Colonel
Highest Point in the Lightning
Storm
Wisconsin
Posts: 4369
From "Turbojet Cycle Analysis" in my Thermodyanamics textbook:
"The things that affect turbojet "cycle": the inlet (atmospheric) pressure, the inlet (atmospheric) temperature, the inlet velocity (which is typically the flight speed of the aircraft), the compressor pressure ratio, the turbine inlet temperature (usually determined by the metallurgical considerations and must be below values that lead to turbine failure), the pressure at the exhaust nozzle, and the isentropic effects of each component are all values that are found or given to be used in the analysis of a turbojet, as are the assumptions that the kinetic energies of the flow can be neglected at all stations except at the inlet and outlet, potential energy changes are negligible throughout the engine, and accessory loads to the engine are negligible. These parameters and values can be used to analyze a turbojet engine in a basic manner, and can be used to find other properties, such as specific thrust (force of thrust/ mass flow-rate of air) and specific fuel consumtion (SFC) (mass flow-rate of fuel/ force of thrust)."
In other words, I have absolutely no idea whatsoever.
Sorry, I'm just so very bored right now.
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Reply #19 -
Nov 1
st
, 2006 at 12:00pm
SimFly
Offline
Lieutenant Colonel
I love YaBB 1G - SP1!
Posts: 9
Quote:
I'd guess that the average member age here is near thirty. And even at that, I'd say that the maturity level those younger members is greater than their chronological age. Partly because the elder members try to keep the younger members on their toes; not only grammatically, but in general. Partly because the younger members return the favor and keep the old guys alert too.
When you visit a forum for the first time; even forgetting that your first impression is made by what (if any) pride you take in displaying your words/thoughts... it's always a good idea to respect the standards of that forum.
If a person would put as much effort into using proper grammar, and trying to spell correctly, as they do complaining about having it pointed out to them... everything would be ...... Oh nevermind
if it would have been "pointed out to me" i might have given it an effort. as it is, some residents having fun on the expense of an outsider, i don't see any reason why i should.
what this looks like is a closed group telling each other to be better than anyone else. that is no "high maturity level".
and since i still didn't get an answer that goes beyond rephrasing my original post, not as knowledgable as they like to think they are either.
but never fear, in the meantime i found a board where there's people who actually know what they doing.
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Reply #20 -
Nov 1
st
, 2006 at 1:35pm
C
Offline
Colonel
Earth
Posts: 13144
I apologise for trying to help...
The strange thing is, you're getting all excited about a tongue in cheek comment that wasn't pompous and happens to have a huge JOKING smiley next to it!
LIGHTEN UP!
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Reply #21 -
Nov 1
st
, 2006 at 4:22pm
SimFly
Offline
Lieutenant Colonel
I love YaBB 1G - SP1!
Posts: 9
you're right, it wasn't pompous, it was patronizing. and the "huge joking smiley" didn't make it any less insulting. and i wasn't talking about you alone, but the whole bunch of playground bullies that joined in.
a good sign of maturity is awareness of the line between humor and insult, and at least rough knowledge where it is.
another sign of maturity is the ability to see one has crossed the line, perhaps accidently, and to give a sincere appology, not one that is meant to justify the insult.
and you propably wouldn't find it strange at all if you'd at least tried to look at it from the other side.
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Reply #22 -
Nov 1
st
, 2006 at 6:35pm
C
Offline
Colonel
Earth
Posts: 13144
Quote:
you're right, it wasn't pompous, it was patronizing. and the "huge joking smiley" didn't make it any less insulting. and i wasn't talking about you alone, but the whole bunch of playground bullies that joined in.
Or, you may find it was a kindly concealed
polite
request.
I think the other may have joined in when you sent the big N word my way perhaps...
I happen to not be a Nazi of any sort, and I think people would find that far more insulting young chap.
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Reply #23 -
Nov 1
st
, 2006 at 7:42pm
SimFly
Offline
Lieutenant Colonel
I love YaBB 1G - SP1!
Posts: 9
well, kid, in that case you should stop acting like one.
anyways, greetings to the rest of the playground gang, i'm outa here
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Reply #24 -
Nov 2
nd
, 2006 at 4:47pm
C
Offline
Colonel
Earth
Posts: 13144
Quote:
well, kid, in that case you should stop acting like one.
You've obviously met some then? We were only hoping you might abide by our sensible forum rules.
Quote:
anyways, greetings to the rest of the playground gang, i'm outa here
Good, because you seem to have a "small" attitude problem which will be better served elsewhere. God forbid they ever let you near a real aeroplane either.
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Reply #25 -
Nov 6
th
, 2006 at 7:08pm
beaky
Offline
Global Moderator
Uhhhh.... yup!
Newark, NJ USA
Gender:
Posts: 14187
Wha?
Did that just happen?
Hm. The fact that SimFly had no luck with his very specific request elsewhere- forcing him to venture through the gauntlet of English-language textbook-wielding "bullies"here at the Big V- suggests to me that he found no luck elsewhere. What did he expect? Some uber-geek sitting amongst piles of empirical flight test data for every FS model ever loaded, ready to dispense tidbits of wisdom upon request?
And for f*ck's sake, he already had published results to start from...
It's a doggone
sim
; you have to experiment
yourself
to discover things like that about these models.
Something tells me he was just spoiling for a debate or something... I can't understand why some people bother doing that. Life's too short...
And about the caps and periods: let's all bear in mind that I'm a lousy typist and often too busy to proofread (my own posts) most of the time, okay?
Seeing as how I am an incredible overbearing snob like all the rest of you, I think some allowance might be made... please don't pick on me!!
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Reply #26 -
Nov 6
th
, 2006 at 7:27pm
C
Offline
Colonel
Earth
Posts: 13144
Quote:
And about the caps and periods: let's all bear in mind that I'm a lousy typist and often too busy to proofread (my own posts) most of the time, okay?
Okay...
Quote:
Wha?
Shouldn't that be "What?" Sean?
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Reply #27 -
Nov 6
th
, 2006 at 8:15pm
beaky
Offline
Global Moderator
Uhhhh.... yup!
Newark, NJ USA
Gender:
Posts: 14187
Quote:
Okay...
Shouldn't that be "What?" Sean?
No, no... it's a perfectly acceptable colloquialism... as if dazed, you see... refer to "Woppen?"...
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Reply #28 -
Nov 6
th
, 2006 at 8:21pm
Mobius
Offline
Colonel
Highest Point in the Lightning
Storm
Wisconsin
Posts: 4369
Shouldn't your post have started out, "Wha?........Woppen?"
I talk English good.
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Reply #29 -
Nov 29
th
, 2006 at 9:24pm
skwang
Offline
Colonel
I love YaBB 1G - SP1!
Posts: 11
Having seen and read a great deal of the recorded history on Nazis, I would really hesitate to refer to anyone as a Nazi or Hitler unless it is a truly horrendous act. By referring to folks who may be sticklers on some subjects as Nazis really cheapens what the real Nazis did. If there really were "spelling Nazi" around many of us would have been shipped off already.
Also as someone who has always struggled with spelling and grammar I would hate to see someone chased off after being embarrassed by their spelling or grammar. To constantly belittle someone with poor spelling and/or grammar has the effect of silencing their voice and discounting their thoughts and ideas.
Skwang
The top is after I spellchecked the bottom before, I know I have a weakness in spelling I use tools to compensate.
www.spellcheck.net
works pritty good.
Having seen a great deal of the recorded history on Nazis, I would really hesitate to refer to anyone as a Nazi or Hitler unless it is a truely horendies act. By refering to folks who may be sticklers on some subjects as Nazis really cheapins what the real Nazis did. If there really were "spelling Nazi" around many of us would have been shipped off already.
Also as somone who has always struggled with spelling and gramer I would hate to see somone chaised off after being embaressed by their spelling or grammer. To constantly bellitlle somone with poor spelling and/or grammer has the effect of silencing their voice and discounting their thoughts and ideas.
Skwang
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