PF: Pilot flying. PNF: Pilot NOT flying TOGA: Take off / Go around power. Layman's terms, "firewalling it". Normal Law: Sidestick commands load factor (ie, "G") and roll rate. High speed / low speed / bank angle / stall / load factor protection. Alternate Law: Arrived in this state due to system degradation. Numerous causes. Not really an issue. Sidestick commands load factor, however, direct control of ailerons. No protection other than load factor and stability at high / low speeds. Aircraft can be stalled. Direct Law (reference): Sidestick directly commands elevator and aileron position. Aircraft enters this law with gear down and autopilot disconnected.
Sorry, think I should have been clearer. When I refer to back-driven sidesticks, I meant that movements on one stick are reflected in movements on the other. As it stands, it's extremely difficult for one pilot to gauge the inputs made by the other.
Recovering from the approach to stall in alternate law was certainly part of my training for the A320, and at no point was it even suggested that it involved back-pressure on the sidestick or full thrust in an attempt to "power out" of the stall. Normal stall recovery is to reduce the angle of attack and then carefully increase power once the aircraft is out of the stall.
The ability to perform what might be considered extreme manoeuvres in normal law is something which a pilot will deliberately choose to do. Examples in which we'd expect to use the flight envelope protection include windshear, TCAS, and (E)GPWS events; not speed discrepancies. If the aircraft is shouting "STALL, STALL" at us, I don't know ANY pilot who would pull back or fail to respect the warning.
Not in this case, though. The aircraft remained in the nose-high attitude due to continuous back-pressure applied by the PF, probably unknown to the PNF. The Airbus's flight characteristics exacerbated the situation by applying nose up stabiliser trim to neutralise elevator deflection. This is not unique to the Airbus; any modern jet transport aircraft will do the same but it doesn't help, since it reduces nose down pitch authority.
Quite correctly, in normal law the Airbus cannot be stalled. That doesn't mean it can't be crashed. However, in alternate law it can certainly be stalled. The warning - which is aural, continuous, and unmistakable: "STALL... STALL..." - signals the approach to the stall and a recoverable situation at any point in the flight envelope. Applying TOGA power would make the situation worse by inducing a nose-up pitching moment, although I doubt that at 35,000ft there was sufficient excess thrust to make a significant impact. It would certainly be noticeable at lower levels.
I do not know - and doubt we will ever know - the reason why nose up sidestick inputs were made. However, I imagine the A350 series will have back-driven sidesticks as a direct result of this accident.
For OLED, the true best case scenario for low power usage is green text on a black background. This is because an OLED isn't a true RGB pixel layout. Instead, it typically runs RRGBB, with the red and blue pixels double sized for apparent longevity reasons.
The green pixel is half the size, so presumably half the power usage.
And I'm perfectly aware I've just pointlessly wasted 5 minutes of my life writing that. APPRECIATE IT, SLASHDOT.:-)
People have an issue with this because if convicted in America he will face the rest of his life (however long or short it may be) languishing in a high security American prison. In the UK we do at least give the majority of our prisoners the chance of rehabilitation.
The above comment disregarding the fact that a US jury is almost certainly likely to be biased against a foreigner; his inability to qualify for any capable legal aid; and an unfamiliarity with the US legal system seems to me an excellent reason to allow him to be tried at home. I imagine that they're also looking to try him under a terrorism-related charge, which is patently not what he set out to achieve.
However, this is now boiling down to a deeper issue of a massive disparity between the number of people extradited from the UK to the USA and vice-versa. I daresay the bulk of this is due to the fact that we do in fact harbour more potential terrorists, but at least some part of it is due to a government that just rolls over and takes it up the arse.
Your son might find object oriented programming a lot easier if he hasn't been taught BASIC or COBOL beforehand. It is, after all, a much more natural way of thinking about things.
I think the point the OP is trying to make is that with two different drives, for every task you attempt you're going to get worst-case performance every time.
Coffin corner does not refer to a simple underspeed/overspeed condition. Limiting factor for speed at high altitude is Mach number, not IAS. Exceeding Mcrit leads to shockwave formation on the leading edge of the wing. This moves the centre of pressure rearwards and causes an uncontrollable nose-down pitching moment known as Mach Tuck.
It is this that can cause speeds to rise to the point where they're damaging to the airframe.
At coffin corner, slowing down will give pre-stall buffet, while speeding up gives mach buffet, the precursor to mach tuck. It's almost impossible to tell the difference between the two. Additionally, given the high TAS even small control inputs can have very rapid and extreme effects. It is exceptionally difficult to hand-fly an airliner at high altitude, especially without the benefit of automatic trim.
Looks like they fixed it in Vista - I just got a shot from a commercial DVD out of Media Player with no issues. And people (including me) criticised it for being crippled with DRM. Oops.
In fact, you can't help be impressed at the results when you go from English -> German -> French -> English again:
"I am not sure, when this one was written, but we have things like babelfish nowadays and that googles of tools of the language and Amikai (not an erroneous orthography) the immediate translation let us make rather well. The "Babelfish" itself is not based however on of Sterntrek to the place on another piece of Sci-FI, the chief of Trampers to the galaxy which itself is filled with ridiculously foolish things. However exists now babelfish. The algorithms always improve. I do not see, why all is impossible to think that one day to be able us to add the voice to these algorithms and to be able the thing supplements on a glare with a small loudspeaker to place to which in your ear installs (I also do not see, the problem of which NASAS with "standard frequencies" is - a small number the foreigner in Sterntrek which is in a vacuum of the phases, have it which are summers in relation to the other type and is normally a part one or other galactic organizations. Nicht-verwerfen it only the allowed foreigners who in a vacuum. Phases are)"
>> Seriously? This is not modded as troll/flamebait?
Probably not. No matter how hard we might try to elimate the problem, there is a significant proportion of white supremacist homophobic Taleban-styled Americans who feel that reading a damned good book is a mortal crime, and whose most grevious insult is to accuse someone of being gay.
My personal suspicion is that someone who falls to such a pathetic level is almost certainly gay themselves, and so horrified that they take a very strong "anti" stance. I suggest that the parent takes a long, hard look at their life and makes a positive decision before it's too late.
J K Rowling has probably done more for child reading than any other person in the last 50 years, and you are insulting her for that? Grow up.
Ooh! Ooh! Let me tell you about my experience installing Linux (my Vista experience as easy as OP's).
HP dv2000z laptop with AMD Turion 64 X2 CPU, 1GB RAM, Geforce 7200 graphics, based around an nForce chipset with Atheros WiFi. What didn't work when I tried to fire up an ubuntu Live CD?
1) Accelerated graphics - didn't seem like it, slow and sluggish with painful redraws. 2) Sound? What sound? Vista autodetected the Conexant HD sound card. 3) Wifi? *Derisive laugh*. When was WiFi EVER worked properly on Linux? 4) Card reader? Nope. Firewire? Nope. 5) Power management? I didn't try to suspend or resume 'cos it was a Live CD, but it couldn't read the battery status.
I know people will say that I could have faffed around with config files and compiled drivers and other bollocks, but I don't want to do that. I LIKE it when Windows grabs all my drivers off the internet. If I need to update the graphics driver, all I do is download one from nVidia and run the setup program.
Why can't Linux be like that? I have no idea what you need to do to install drivers in Linux, and I don't want to be screwing around on the command line for it. This is why Linux has failed to take off in the home market, not because of Microsoft's monopoly but because it's a pain in the arse to make anything work how you want it.
I should think my grandma could - just - manage to install Vista. All she has to do is drop the DVD in the drive and click "Next" a few times. Linux? Chances are she wouldn't even be able to get on the internet to find out how to make wireless work.
Mildly funny, but why does the author go on a rant about viewing the screen resolution? For crying out loud, it's only 3 clicks away from the desktop. Ironically, exactly the same as in XP...
Why should MS be doing the work? All that list refers to is the list of applications submitted to Microsoft's "Designed for Windows" logo program. The onus is on Mozilla and Adobe to submit their software, not Microsoft to try to include everything.
FireFox works perfectly in Vista, so does Acrobat Reader. Photoshop doesn't, and drops the system into compatibility mode. Is this really Microsoft's fault?
I'm all for it. Our house uses solely compact fluorescent lamps and I'm planning to add low level LED lighting that's on all the time to further cut the bills. The main reason we use the low energy lights is to save electricity, rather than the environmental benefits.
On a related matter - all our Christmas tree decorations were LED this year, looked a lot better than incandescent and in the UK, at least, sold out well before Christmas.
Slashdot Mirror
Been there, done that, got the T-shirt:
http://en.wikipedia.org/wiki/File:GCHQ-doughnut.jpg
PF: Pilot flying.
PNF: Pilot NOT flying
TOGA: Take off / Go around power. Layman's terms, "firewalling it".
Normal Law: Sidestick commands load factor (ie, "G") and roll rate. High speed / low speed / bank angle / stall / load factor protection.
Alternate Law: Arrived in this state due to system degradation. Numerous causes. Not really an issue. Sidestick commands load factor, however, direct control of ailerons. No protection other than load factor and stability at high / low speeds. Aircraft can be stalled.
Direct Law (reference): Sidestick directly commands elevator and aileron position. Aircraft enters this law with gear down and autopilot disconnected.
Useful reference:
http://www.airbusdriver.net/airbus_fltlaws.htm
Sorry, think I should have been clearer. When I refer to back-driven sidesticks, I meant that movements on one stick are reflected in movements on the other. As it stands, it's extremely difficult for one pilot to gauge the inputs made by the other.
Recovering from the approach to stall in alternate law was certainly part of my training for the A320, and at no point was it even suggested that it involved back-pressure on the sidestick or full thrust in an attempt to "power out" of the stall. Normal stall recovery is to reduce the angle of attack and then carefully increase power once the aircraft is out of the stall.
The ability to perform what might be considered extreme manoeuvres in normal law is something which a pilot will deliberately choose to do. Examples in which we'd expect to use the flight envelope protection include windshear, TCAS, and (E)GPWS events; not speed discrepancies. If the aircraft is shouting "STALL, STALL" at us, I don't know ANY pilot who would pull back or fail to respect the warning.
Not in this case, though. The aircraft remained in the nose-high attitude due to continuous back-pressure applied by the PF, probably unknown to the PNF. The Airbus's flight characteristics exacerbated the situation by applying nose up stabiliser trim to neutralise elevator deflection. This is not unique to the Airbus; any modern jet transport aircraft will do the same but it doesn't help, since it reduces nose down pitch authority.
Quite correctly, in normal law the Airbus cannot be stalled. That doesn't mean it can't be crashed. However, in alternate law it can certainly be stalled. The warning - which is aural, continuous, and unmistakable: "STALL... STALL..." - signals the approach to the stall and a recoverable situation at any point in the flight envelope. Applying TOGA power would make the situation worse by inducing a nose-up pitching moment, although I doubt that at 35,000ft there was sufficient excess thrust to make a significant impact. It would certainly be noticeable at lower levels.
I do not know - and doubt we will ever know - the reason why nose up sidestick inputs were made. However, I imagine the A350 series will have back-driven sidesticks as a direct result of this accident.
For OLED, the true best case scenario for low power usage is green text on a black background. This is because an OLED isn't a true RGB pixel layout. Instead, it typically runs RRGBB, with the red and blue pixels double sized for apparent longevity reasons.
The green pixel is half the size, so presumably half the power usage.
And I'm perfectly aware I've just pointlessly wasted 5 minutes of my life writing that. APPRECIATE IT, SLASHDOT. :-)
People have an issue with this because if convicted in America he will face the rest of his life (however long or short it may be) languishing in a high security American prison. In the UK we do at least give the majority of our prisoners the chance of rehabilitation.
The above comment disregarding the fact that a US jury is almost certainly likely to be biased against a foreigner; his inability to qualify for any capable legal aid; and an unfamiliarity with the US legal system seems to me an excellent reason to allow him to be tried at home. I imagine that they're also looking to try him under a terrorism-related charge, which is patently not what he set out to achieve.
However, this is now boiling down to a deeper issue of a massive disparity between the number of people extradited from the UK to the USA and vice-versa. I daresay the bulk of this is due to the fact that we do in fact harbour more potential terrorists, but at least some part of it is due to a government that just rolls over and takes it up the arse.
Your son might find object oriented programming a lot easier if he hasn't been taught BASIC or COBOL beforehand. It is, after all, a much more natural way of thinking about things.
cat.sleep(all day);
cat.eat();
cat.purr();
Also, look at Turtle Java:
http://www.philocomp.net/programming/turtlejava
I think the point the OP is trying to make is that with two different drives, for every task you attempt you're going to get worst-case performance every time.
Coffin corner does not refer to a simple underspeed/overspeed condition. Limiting factor for speed at high altitude is Mach number, not IAS. Exceeding Mcrit leads to shockwave formation on the leading edge of the wing. This moves the centre of pressure rearwards and causes an uncontrollable nose-down pitching moment known as Mach Tuck.
It is this that can cause speeds to rise to the point where they're damaging to the airframe.
At coffin corner, slowing down will give pre-stall buffet, while speeding up gives mach buffet, the precursor to mach tuck. It's almost impossible to tell the difference between the two. Additionally, given the high TAS even small control inputs can have very rapid and extreme effects. It is exceptionally difficult to hand-fly an airliner at high altitude, especially without the benefit of automatic trim.
Normally with Apple stuff you throw the old model away and simply wheel out a replacement- oh, wait.
I think it depends on whether or not your subconscious hates you.
Looks like they fixed it in Vista - I just got a shot from a commercial DVD out of Media Player with no issues. And people (including me) criticised it for being crippled with DRM. Oops.
And another copy here - I'm not going to be treated as a pirate. But then, what did we expect when EA grabbed control?
Surely another world first is a Slashdot editor using a spell checker before posting... ;-)
In fact, you can't help be impressed at the results when you go from English -> German -> French -> English again:
"I am not sure, when this one was written, but we have things like babelfish nowadays and that googles of tools of the language and Amikai (not an erroneous orthography) the immediate translation let us make rather well. The "Babelfish" itself is not based however on of Sterntrek to the place on another piece of Sci-FI, the chief of Trampers to the galaxy which itself is filled with ridiculously foolish things. However exists now babelfish. The algorithms always improve. I do not see, why all is impossible to think that one day to be able us to add the voice to these algorithms and to be able the thing supplements on a glare with a small loudspeaker to place to which in your ear installs (I also do not see, the problem of which NASAS with "standard frequencies" is - a small number the foreigner in Sterntrek which is in a vacuum of the phases, have it which are summers in relation to the other type and is normally a part one or other galactic organizations. Nicht-verwerfen it only the allowed foreigners who in a vacuum. Phases are)"
Not really, it's just that in the rest of the civilised world calling someone "gay" stops being an insult at about seven years old.
>> Seriously? This is not modded as troll/flamebait?
Probably not. No matter how hard we might try to elimate the problem, there is a significant proportion of white supremacist homophobic Taleban-styled Americans who feel that reading a damned good book is a mortal crime, and whose most grevious insult is to accuse someone of being gay.
My personal suspicion is that someone who falls to such a pathetic level is almost certainly gay themselves, and so horrified that they take a very strong "anti" stance. I suggest that the parent takes a long, hard look at their life and makes a positive decision before it's too late.
J K Rowling has probably done more for child reading than any other person in the last 50 years, and you are insulting her for that? Grow up.
Likewise, if you're in the UK, you can stream it from the BBC's website too.
150x faster? My cable modem syncs at 20mbits/second, and so too does the majority of others on the Virgin Media network in the UK.
https://launchpad.net/envy
;)
This one? Might give Linux another try then.
Ooh! Ooh! Let me tell you about my experience installing Linux (my Vista experience as easy as OP's).
HP dv2000z laptop with AMD Turion 64 X2 CPU, 1GB RAM, Geforce 7200 graphics, based around an nForce chipset with Atheros WiFi. What didn't work when I tried to fire up an ubuntu Live CD?
1) Accelerated graphics - didn't seem like it, slow and sluggish with painful redraws.
2) Sound? What sound? Vista autodetected the Conexant HD sound card.
3) Wifi? *Derisive laugh*. When was WiFi EVER worked properly on Linux?
4) Card reader? Nope. Firewire? Nope.
5) Power management? I didn't try to suspend or resume 'cos it was a Live CD, but it couldn't read the battery status.
I know people will say that I could have faffed around with config files and compiled drivers and other bollocks, but I don't want to do that. I LIKE it when Windows grabs all my drivers off the internet. If I need to update the graphics driver, all I do is download one from nVidia and run the setup program.
Why can't Linux be like that? I have no idea what you need to do to install drivers in Linux, and I don't want to be screwing around on the command line for it. This is why Linux has failed to take off in the home market, not because of Microsoft's monopoly but because it's a pain in the arse to make anything work how you want it.
I should think my grandma could - just - manage to install Vista. All she has to do is drop the DVD in the drive and click "Next" a few times. Linux? Chances are she wouldn't even be able to get on the internet to find out how to make wireless work.
*Watches karma come crashing down*
Mildly funny, but why does the author go on a rant about viewing the screen resolution? For crying out loud, it's only 3 clicks away from the desktop. Ironically, exactly the same as in XP...
Why should MS be doing the work? All that list refers to is the list of applications submitted to Microsoft's "Designed for Windows" logo program. The onus is on Mozilla and Adobe to submit their software, not Microsoft to try to include everything.
FireFox works perfectly in Vista, so does Acrobat Reader. Photoshop doesn't, and drops the system into compatibility mode. Is this really Microsoft's fault?
I'm all for it. Our house uses solely compact fluorescent lamps and I'm planning to add low level LED lighting that's on all the time to further cut the bills. The main reason we use the low energy lights is to save electricity, rather than the environmental benefits.
On a related matter - all our Christmas tree decorations were LED this year, looked a lot better than incandescent and in the UK, at least, sold out well before Christmas.