The relationship is a direct one. If you have 100kt indicated airspeed and a 180 degree headwind of 50KT you have a ground speed of 50KT. To further confuse the issue, true airspeed increases over the ASI reading at 2% per thousand feet.
So at 10,000ft, your actual airspeed is 20% higher than indicated by the pitot driven ASI.
"Meanwhile, the pilot can look out the window instead of at an instrument panel!"
But in this glider pilots experience they probably wont. Not so long ago a commercial jet flew right into the wingtip of a glider. The Carbon fibre main spar entered the jet and was poking thru the instrument panel next to the pilot!
Said pilot was head down programming a GPS, not looking out the window.
Yeh, not a lot of power is required for phantom mics, but a the higher the voltage the higher the output level. This has an obvious signal to noise benefit.
Having used such mikes powered by 1.5v batteries which they have provision for in the abscence of phantom,I was very surprised by the improvement when phantom powered.
The system has no beraing on whether figures are expressed in decimal or fractions. There is no reason that either method can be used for both systems.
Why not just use a balancing transformer at the input just like the mic has inside to create its balanced outs anyway.
Further balancing really only helps on very long cable runs, and for using 48V phantom, which can be done by injecting at the above mentioned transformer.
An XLR is a relatively heavy large connector with a few disadvantages when used including damage to the device it is attached to due to its weight.
There are only 2 advantages to using XLR mic inputs.
1. XLR mics usually have a balanced output, helping with noise cancellation on long cable runs, and giving twice the effective signal voltage of an unbalanced mic. This really is only an advantage with long runs of cable.
2. Condenser XLR mics can be powered from 48V phantom power which is possible due to haveing 2 signal conductors. Otherwise the mic must be run off a battery giving much less output.
I have at times had to use balanced XLR mics with an unbalanced input, and whilst needing a little more gain, performance was virtually the same.
What I would like to see is a method under which under my UID I could filter out posts that are repeats of the same copy/paste troll text. Once I have banned that particular post it would never appear again when logged in.
This is an unprecendented situation for Iran, Robert Fisk reports the special forces troops have been protecting the demonstrators from militia's-much to his amazement.
Robert is probalbly the preeminent western jounalist in the Middle East. He is still wandering the streets of Iran reporting despite the danger.
The courage of these people in Iran is a lesson to us all in how to respond to government excess. It's nice to see a people willing to put their lives on the line for principle, remember when westerners used to do that?
I hesitate to say this but perhaps if the US stopped pumping money and weapons into Israel, countries like Iran might not be so keen to support their opponents.
It has always amazed me that Israel, a country in breach of more UN resolutions than all the other countries put together is allowed to provoke nuclear proliferation by having nuclear weapons.
Cue the down mods, no one is allowed to criticize Israel apparently, and so it goes on.
Slashdot Mirror
The relationship is a direct one. If you have 100kt
indicated airspeed and a 180 degree headwind of 50KT you have a ground speed of 50KT. To further confuse the issue, true airspeed increases over the ASI reading at 2% per thousand feet.
So at 10,000ft, your actual airspeed is 20% higher than indicated by the pitot driven ASI.
"Meanwhile, the pilot can look out the window instead of at an instrument panel!"
But in this glider pilots experience they probably wont. Not so long ago a commercial jet flew right into the wingtip of a glider. The Carbon fibre main spar entered the jet and was poking thru the instrument panel next to the pilot!
Said pilot was head down programming a GPS, not looking out the window.
It certainly is thier job to invetigate safely, but it is not their job to release unconfirmed specualtion based on no evidence. Or is it?
Yeh, not a lot of power is required for phantom mics, but a the higher the voltage the higher the
output level. This has an obvious signal to noise benefit.
Having used such mikes powered by 1.5v batteries which they have provision for in the abscence of phantom,I was very surprised by the improvement when phantom powered.
No reason that cannot still happen (Unfortunately), what happens here is that all items are added together then rounded to the nearest 5 cents.
WTF?
Whats wrong with 1/2 metre, or .5ft.
The system has no beraing on whether figures are expressed in decimal or fractions. There is no reason that either method can be used for both systems.
Better still a liter of water is not only 1 kg, it also when put into to a cubic shape produces a cube 10cmx10cmx10cm.
Interesting, I wonder why you cant get rid of your penny.
Some time ago 1 and 2 cent coins were discontinued in Australia. Our smallest coin is 5C now.
Once there was nothing that could be bought for 1 or 2 cents it became a pointless exercise.
"Try quartering a cm - you end up with fractions of mm"
Whats wrong with 1/4 cm?
Or to put it another way .25".
It makes no diference which system you use you can express fractions in both.
Its those damn stonecutters!
"We're the ones who keep the metric system down"
Why not just use a balancing transformer at the input just like the mic has inside to create its balanced outs anyway.
Further balancing really only helps on very long cable runs, and for using 48V phantom, which can be done by injecting at the above mentioned transformer.
An XLR is a relatively heavy large connector with a few disadvantages when used including damage to the device it is attached to due to its weight.
There are only 2 advantages to using XLR mic inputs.
1. XLR mics usually have a balanced output, helping with noise cancellation on long cable runs,
and giving twice the effective signal voltage of an unbalanced mic. This really is only an advantage with long runs of cable.
2. Condenser XLR mics can be powered from 48V phantom power which is possible due to haveing 2 signal conductors. Otherwise the mic must be run off a battery giving much less output.
I have at times had to use balanced XLR mics with
an unbalanced input, and whilst needing a little more gain, performance was virtually the same.
What I would like to see is a method under which under my UID I could filter out posts that are repeats of the same copy/paste troll text. Once I have banned that particular post it would never appear again when logged in.
It was Jan 2008 that his occoured.
Summer before last apparently.
Doesnt time fly.
Regardless significant ammounts of power flow from Tasmania to the mainland in summer.
aka guns so they can shoot the bastards
Yep, more guns ALWAYS helps.
(aside from perhaps having more guns around)
Ketchup? On Lobster?
Head explodes.
He would have some very nicely shaped bruises.
Y'know if it was not for the last line that post would be insightful rather than a troll.
If you could just have kept the classwarfare bullshit out of it.
Assholes come in all races, genders, sexualities and operating systems. How much money they have has no bearing on whether they are an asshole or not.
What/ I distinctly remember last summer we lost power in South Australia due to overheating in Tasmania causing Basslink to shutdown.
Sounds like power is coming from tasmania to the mainland not the opposite!
I still like the picture on my good old Sony Wega
TV. Fast motion and panning particularly watching ball sports is much better.
Ooops, vasectomy not condom. That will teach me to read the subject line.
Yeh there nothing like a stable relationship to
stop you from having sex.
Oh wait you meant using a condom.
WFT???
A chiro visit in Australia costs exactly the smae whether insured or not.
Seriously, if this happens in the US your healthcare is even more fucked up than I thought!
This is an unprecendented situation for Iran,
Robert Fisk reports the special forces troops
have been protecting the demonstrators from militia's-much to his amazement.
Robert is probalbly the preeminent western jounalist in the Middle East. He is still wandering the streets of Iran reporting despite the danger.
The courage of these people in Iran is a lesson to us all in how to respond to government excess.
It's nice to see a people willing to put their lives on the line for principle, remember when westerners used to do that?
http://www.abc.net.au/news/stories/2009/06/17/2600571.htm
I hesitate to say this but perhaps if the US stopped pumping money and weapons into Israel,
countries like Iran might not be so keen to support their opponents.
It has always amazed me that Israel, a country in breach of more UN resolutions than all the other countries put together is allowed to provoke nuclear proliferation by having nuclear weapons.
Cue the down mods, no one is allowed to criticize Israel apparently, and so it goes on.