|
|
msu94
Joined: 16 Feb 2002
Posts: 207
Location: Tucson, AZ |
 Fri Apr 11, 2003 9:30 am
|
 |
|
Smog Control??
Piston engines are virtually unchanged in their technology since then. Aircraft now at those altitudes will be usually jet, as opposed to piston at that time.
But actually the average piston engine then is more powerful and complex than the average piston engine now.
There really arent any smog controls on jet engines like on cars. They just make them more and more efficent in terms of burning fuel, but they still put out a lot of gasses.
Smog is a low level photochemical reaction anyways
|
| |
|
|
stameyjd
Joined: 31 Jan 2003
Posts: 44
|
|
Sat Apr 12, 2003 1:29 am
|
|
|
hi,
i am well aware that some people get their jollys hanging around here trying to disprove someone else or mock other memner's attempts at explication.
it is either a lame attempt to look smart or deliberate sabotage of member's ideas. before insulting others or laying heavy criticism ideas for public display, please do some appropriate research.
any textbook on the earth's hydrological system will provide basic facts pertaining to cloud formation, either man made or natural, ie nature's water cycle.
i have posted direct passages of the requirements. heat(sun)and cold(body of water). as the sun evaporates the water it rises and forms clouds. very basic 6th grade stuff.
then as the water laden clouds are blown across the earth and collides with cold air masses, we get rain.
the ww II effects were well documented on history channel's series on effects of war on the environment, especially the early airplane and its habit of smoking badly. it should be available at blockbuster video.
|
| |
|
|
msu94
Joined: 16 Feb 2002
Posts: 207
Location: Tucson, AZ |
|
Sat Apr 12, 2003 5:34 am
|
|
|
Well instead of vague generalizations and character aspersions, tell me exactly what I am wrong about in that last message. And be specific.
And no, WW2 era piston engines were not smokier. Radial engines smoke when started, but when running were no different. Aircraft piston engines of today are not much different, and often less sophisticated then engines then.
Do you believe that the people in WW2 were mistaken? Were they not running their engines correctly, and only you know this, since only you seem to know this?
The high altitude trails from photos are movies are not just some kind of smoke/smog trails. There were contrails, just like today.
Do you even know what "SMOG" is?
[Edited 1 times, lastly by msu94 on 04-11-2003] |
| |
|
|
NW41Heavy
Joined: 28 Mar 2003
Posts: 88
Location: Tallahassee, FL |
|
Sat Apr 12, 2003 6:42 am
|
|
|
OK- here we go.. been pretty the past few days spraying chemicals for the new world order. 
stameyjd- regular cirrus clouds have that wispy, lacy look...because they are ice crystals floating up there. Couldnt this explain the way "chemtrails (long lasting contrails)" look to you?
Also- the contrails made by the B-17's were created by the same reason modern high altitude aircraft create contrails- not because their engines smoked more (ever seen an old 707 or B-52 takeoff?). Contrails are created by the hot water vapor from the engines getting coughed out into the atmosphere and condensing- caused by the same chemical reactions in jet engines as in piston. It's all internal combustion, just in jets it is one smooth action where as pistons have 4 separate "strokes."
For all- to help aid in length estimations- For every 7 seconds, an airliner goes a mile.
From what it looks like- many of you disagree on what chemtrails really look like, as well as their purpose.
------------------
Dude, that guy has a black belt in redneck! |
| |
|
|
the professor
Joined: 10 Jan 2003
Posts: 1164
Location: heartland USA |
|
Sat Apr 12, 2003 7:00 am
|
|
|
Part of the reason the B17 bombers smoked was at higher altitudes there is less oxygen, making you have to richen the fuel mixture significantly which intern doesn't burn as fully or clean hence your exhaust, same concept of a carburated car. Oh yeah the pics of the B17 are actually contrails if there are some here who actually think otherwise, probaly not but just gotta check to make sure. |
| |
|
|
PHXPilot
Joined: 05 Jan 2003
Posts: 800
Location: Phoenix, AZ, USA |
|
Sat Apr 12, 2003 7:07 am
|
|
|
Actually Prof, you have to lean the fuel mixture to compensate for the lack of air.
No biggie though  |
| |
|
|
NW41Heavy
Joined: 28 Mar 2003
Posts: 88
Location: Tallahassee, FL |
|
Sat Apr 12, 2003 7:18 am
|
|
|
piston planes lean their mixture at altitude to get a more efficient fuel burn to compensate for the lack of oxygen. The engine temps also are considerably higher too when it is leaned.
------------------
Dude, that guy has a black belt in redneck! |
| |
|
|
msu94
Joined: 16 Feb 2002
Posts: 207
Location: Tucson, AZ |
|
Sat Apr 12, 2003 7:22 am
|
|
|
Actually Prof, yes PHX is correct. To maintain the same stochiometric ratio for fuel/air, you have to lean the fuel as the air becomes thinner. I am pretty sure those aircraft in WW2 has auto-lean, which piston aircraft today do not have. Well unless they date back to the 40-50s. I flew a Twin Bonanza which had auto leaning of the fuel.
So then you end up burning less fuel when you go high, to maintance a given speed across the ground That thinner air means less drag and is therefore more efficent. You can burn the same fuel and go faster, or less fuel and go the same speed |
| |
|
|
NW41Heavy
Joined: 28 Mar 2003
Posts: 88
Location: Tallahassee, FL |
|
Sat Apr 12, 2003 7:29 am
|
|
|
New generations are going into a new form of auto-leaning, called FADEC- fully automated digital engine control. Basically like the auto lean feature. I've actually never heard of the autolean function on older engines- only come to my attention with the new FADEC engines coming in recently.
------------------
Dude, that guy has a black belt in redneck! |
| |
|
|
msu94
Joined: 16 Feb 2002
Posts: 207
Location: Tucson, AZ |
|
Sat Apr 12, 2003 7:34 am
|
|
|
FADEC is seeing 1980s technology finally coming to aircraft piston engines. FADEC equipped piston engines really only need one lever for power, instead of 3 (power, prop, mixture)
Its amazing how ancient the average aircraft piston engine is of today. The horizontally opposed piston engine has probably been around 60 years at least, if not longer.
The previous mechanical auto lean used air density to lean or richen the fuel mixture I believe. Has not been in use for a long time though, unless you fly an aircraft of that era
In the twin bonanza, you didnt touch the mixture except for starting and stopping the engine. |
| |
|
|
Theh0661t
Joined: 10 Feb 2003
Posts: 25
Location: san bernardino, CA USA |
|
Sat Apr 12, 2003 8:39 pm
|
|
|
That's very interesting! Now I know why I keep stalling, crashing, etc. on my flight sim... Haha I didn't know how to use the mixture and prop thingy.
------------------
I can't write haiku
Something about syllables
I don't understand |
| |
|
|
 
|
|
 Goto page Previous
1, 2
All times are GMT. The time now is Fri May 25, 2012 9:55 pm
|
|
|
|
|
Login
