574 posts • joined Wednesday 21st May 2008 15:34 GMT
This real world thing, how does posting anonymously on an internet forum fit in with that?
Cavitation only really happens when you're pushing the blades through the water faster than they're designed to go. There's still plenty of noise from propller blades without cavitation happening which this could possibly address assuming the greater density of water doesn't preclude the techniques being applicable.
“I fly because it releases my mind from the tyranny of petty things”
Re: Upholder class
I was talking to someone recently who was of the opinion that as we've failed to procure major military projects to time or cost since the days of Samuel Pepys* it might be an idea to accept this failing and allow for it at the start of the contract, rather than continuing to be astounded by a level of incompetence** that's been ongoing for several hundred years.
*It's apparently mentioned in his diaries.
**By all parties involved.
Re: SkippyBing Remember battlecrusiers?
Matt, I'll try and ignore the ad hominem attacks in my response.
Did the UK have the best air defence network in the world at the start of the BoB? Yes, however my point was that their plan for the use of the fighter once the intercept was coordinated was poor, i.e. having a section of fighters take it in turns to line up behind the enemy bomber and engage it while the tail gunner had a perfect shot. Never mind the original concept of use for the turret fighter. My point was that they had to rapidly relearn the basics such as operating as a number of two ships rather than having a whole squadron try and manoeuvre its way around the sky in formation.
Similarly in Vietnam the aircraft that performed best in air to air combat were the older ones as they'd been taught it, whereas it had been assumed the Phantom would never need to under the new concept of operations. Hence the response of setting up Top Gun et al as a response to the poor performance of the F-4 in the air to air arena, or are you saying it was set up for different reasons? It's a particularly literal reading of my post to assume I meant the entire USAF had forgotten about dog fighting. My point was they'd had to do something to address the lack of ACM training for a large part of their fleet as they'd thought it was no longer relevant to the next generation of aircraft.
I'm not sure how you prove I'm very wrong to say " it's the speed and range that's increased, including the detection range" and then go on to say how the range of various sensors and weapons has increased, like I said it had.
Regarding kill ratios there are various ways of reading the results in South East Asia, and it's hard to know the true story. For instance after the engagement where Cunningham and Driscoll became the USN's only F-4 aces they had to eject due to damage sustained in combat. The US don't count that as a kill for the NVAF as it happened after the encounter, whereas they'd be quite happy to count a NVAF aircraft that crashed on landing as a kill for anyone who'd fired shots at it.
Re: SkippyBing Remember battlecrusiers?
"the turning dogfight of WW1 evolved into the vertical fighting of WW2"
I was thinking more of the basic employment of the fighter, which the RAF had to relearn during the Battle of Britain having come up with a range of frankly barking tactics during the 20s and 30s.
" Their training and equipment was designed for shooting down Russian nuke bombers over Europe or Alaska."
So yes, they had to relearn basic fighter manoeuvre , hence Top Gun and the USAF Aggressor program.
" but even this is different nowadays as the "seeing" is often done by long-range radar, IR sensors or long-range TV."
Thanks I did wonder what all that equipment hanging of the front of my helicopter was for, who knew it was for long range "seeing". As I said, the basics are the same it's the speed and range that's increased, including the detection range.
Going back to the US kills in Vietnam, they may have claimed ~200 kills but they did lose almost 10 times that, whereas the Israelis have lost 18 aircraft in air to air combat since 1948.
Re: Remember battlecrusiers?
"More importantly, most genuine experianced air to air combat pilots, even Israeli will have retired from front line service since they were last needed"
It doesn't stop the basic maxims of combat being true though, who do you think writes the manuals?
Nothing's really changed since WW1 apart from the speed and range of the combatants. Something the US had to relearn during Vietnam, although I grant you they may have more kills than the Israelis. At the same time in terms of relative numbers I'd argue the Israelis have more experience, which comes from the majority of neighbouring countries wanting your destruction. Apparently even this century they've been busy bombing Syrian reactors and shooting down various drones.
Re: Remember battlecrusiers?
Well, since 1947 they've destroyed ~600 enemy aircraft in air to air combat, and been in 5 major wars/conflicts i.e. the War of Independence, Sinai Conflict, Six Day War, the War of Attrition and the Yom Kippur War. Not to mention the Entebbe hostage rescue and taking out Iraq's nuclear programme in an air raid.
I'm unaware of another air force that's been as busy since WW2.
Re: Remember battlecrusiers?
'Speed is Life' - The Israeli Air Force, who have more combat experience than most.
"their security services are, thinking they have the right to spy on everyone else"
That's kind of what security services do, especially the spying ones. If I was funding the NSA and they weren't spying on everyone they could I'd be pretty pissed off.
Obviously no spy agency thinks they have the right to do these things, otherwise they wouldn't try so hard not to get caught.
"For that you need a sustainable hardware business model, a healthy ecosystem for developers, and happy end users"
I don't know Microsoft managed years without the last one of those...
So just to confirm, putting a faster processor and higher resolution screen in something is now 'innovation'? Well I suppose they've devalued the word 'genius' as far as they could, may as well start on another one.
Re: GPS spoofing
'If you wanted to cause a ship to alter course, wouldn't it be easier to spoof local GPS signals?'
Depends on what your goal was. If you want to create an alteration of course in a limited geographic area it's probably a better bet to inject a ghost ship into AIS as the ship's reaction is fairly predictable, it'll turn right*. GPS would work if you wanted it to end up somewhere different at the end of its voyage, i.e. it'd be quite noticeable if you made such a large shift that it made a 10 degree alteration of course within a few miles. Depending on your target vessel of course, you'de have to have fairly unobservant crew to not notice a tanker avoiding a non-existent ship.
*Slightly simplified but this is the general solution for all give way vessels in the international regulations for avoiding collision at sea. Give way vessels are the ones that have to give way to the stand on vessel and to make things easy, if you can see the other boats red navigation lights you're the give way vessel.
'That you think the whole phone-hacking thing can be prevented in the future by just saying sorry?'
Or the Police doing their actual job of arresting criminals rather than accepting bribes from them...
Ahh Compton. I've been there once, in a helicopter, it actually has an airfield which threw me somewhat. The 'I've heard it all before' tone in the voice of the air traffic controller as I reported I was 'straight out of Compton' did tarnish the experience somewhat.
Re: No need for revolution
Which I agree with, the problem is Apple make such a song and dance about the release of a modest update. If they'd just put out a press release or mentioned it along with some other stuff that would be fine but having a massive presentation that can be summed up as 'buy a faster one or a hideous plastic one' and youopen yourself up to ridicule, or at least mildly biting sarcasm.
Re: Truth or consequences
'If I'd behaved like this towards my previous employer I'd expect them to tell any future employer.'
The difference being your school doesn't employ you and given the vast sums of money you have to pay a university to go there it's more like they're your employee.
Re: The amazing walkman
I know what you mean, I've still got a Walkman WM-EX5 which I refuse to throw away despite having about two actual cassettes I could play in it! Mostly because the engineering still astounds me today, barely the size of the box the tape comes in and a slimline battery that would last for something like 36 hours of playback. Plus the mirror like cover appeals to my magpie like tendencies.
Happy memories of listening to music on it exploring whichever part of the globe my unplanned career moves took me to. Still always carry a biro on me even today...
Re: How long the data is held.
@SP, there's what I should do and then there's the reality of moving several years worth of credit card statements with a balance of £0 on them. So I took the easy route.
Re: How long the data is held.
As I understand it, as someone who briefly processed PPI claims for a big bank, they only have to keep the data back a certain number of years (six I think off the top of my head), however they may have kept it back longer. The policy where I worked was that they'd use the data back as far as they had it and then for any gap assume a linear growth rate from 0 when the account was opened to whatever the first record showed. Additionally if the customer had statements they'd accept those for the calculation, which would imply some people are a lot more rententive than I am.
To answer an earlier point, where I worked they were intitially dealing with PPI claims for people who applied, which were coming in faster than they could be processed, however there was the aspiration to subsequently deal with everyone else. I've no idea if this happened as I left after two months to work in flight safety. Although not before I'd sucessfully made my own claim against the bank, which I almost ended up processing...
In Mr. Ballmers case the 'ly' on the end of stupidly is optional
The question being, if you're so smart, why aren't you rich?
'There appears to be individuals in and associated with the EDL, who have been found guilty of many offences'
So like a proper political party then?
Re: Yeah, just because you disagree with someone..
'What about when MOST people disagree with someone? '
So you're saying they're a minority?
Re: Tommorows announcement...
It may be too late to call it 'Fondleslab', one of the guests on Radio 4's today programme yesterday used the term to refer to tablets generically. So either she's a keen reader of El Reg or the term is already deeply embedded in the lexicon.
Re: What's really weird
My money's on the multi-armed elephant, best celebrity death match ever!
those that take his approach are ignoring what the Bible text says
plz tell me where 10k yrs came from in the bible ?
Counting backwards. As demonstrated by Bishop Ussher who upon arriving at a date for creation of Sunday October 23rd 4004 BC decided that it must be true, rather than disproving the whole book as the myths and ramblings of some desert tribesmen and farmers.
Think outside the living room...
The attraction for me isn't the living room, I've got a Frankenstein PC sat under the TV in there that does everything this does and more, you know like help keep the room warm.
However in the bedroom I've only got a Freeview TV, which may sound enough but a Saturday morning in Casa del Bing involves a lot of swearing at daylight and putting off getting up. Now I can plug my Asus Transformer into it to watch YouTube videos and 4OD/iPlayer etc. but that involves a certain amount of getting up to set it up. With a Chromecase I could happily trough some content at the screen without having to suffer the onset of a migraine induced by moving to the vertical.
Now I'm aware my lifestyle choices are not for everyone, somedays they're not even for me, however my general point stands. This isn't for getting Smart TV into the living room, it's for getting Smart TV into every room.
Re: "one to go down it and shatter it"
I'm probably missing something obvious, but if we shatter it into lots of tiny pieces that then hit us, aren't the smaller bits more likely to burn up in the atmosphere than the one big bit? I mean I'm guessing that wouldn't be great but presumably less bad than one big bit hitting the surface?
Re: The real question is
True, but they're not short of coastline either and it's not all a world heritage park, so why not use one of those bits?
Oddly it should be easier hitting an island than an area in the middle of the desert as it'll give you a more discrete radar target to lock on to.
The real question is
Why did the Australians put a bombing range right by the Great Barrier Reef? It's not as if they're short of empty real estate.
Re: Plastic Vs Aluminium
Apparently I should be more explicit when I make my points.
Is a slightly warm London the warmest conditions a 787 will have been parked in? I doubt it, ANA uses them and last time I was there Tokyo was pretty warm as well. Shockingly airline manufacturers heat and cold soak their aircraft as part of the design and certification process.
Will there be procedures for parking in warm weather? Probably if it's thought it could be an issue, if not it's likely adverse reactions would have occurred somewhere else first as a seasonally warm London is quite mild compared to a lot of places.
Will these procedures list the airport they should be carried out at? I doubt it, they'd probably use something more reliable like the air temperature. If only there was some way of getting that at an airport...
in the unseasonal London sun for 8 hours
Whereas in Ethiopian Airlines home country it's never exposed to those kind of temperatures...
Re: Carrier Nonsense
So your proposal is:
1. Stop building military vessels with integrated defences and networked escort vessels because they're too vulnerable.
2. Replace them with converted merchant shipping which for some reason isn't, despite not having any defences.
3. Add some containerised defences, much like the ones on the naval ships you got rid on in 1, in fact the two examples you listed are already on Royal Navy ships.
Oddly this to my mind puts you back to square one, just without the survivability of a naval vessel in the event of actually being hit.
There may well be an imminent revolution in naval affairs, this isn't it.
'And how, exactly, does the Weight on Wheels switch work in comparison with an actual physical isolator in the cockpit? '
Pretty much the same way, they're both switches just the location is different. Certainly the flight/ground switch I've used wasn't a physical isolator it was just a switch that made a circuit live that then set various relays, e.g. one to allow the radar to transmit.
Weight on Wheels switches have been around for decades so are a tried and tested mechanism, and besides it's not as if they're directly connected to the 'start fire in aft of aircraft' circuit, so if if it was faulty it's unlikely to be the direct cause of the fire.
By the same token why are we in the first world wasting money on airliners when we could be teaching people about grammar and capitalisation and making coherent statements.
I don't really see how the g/f switch would help, it's not a magic panacea that prevents fires from breaking out onboard the aircraft. In fact as modern airliners have weight on wheels switches to perform the same function it obviously doesn't.
At the same time at this stage for all we know this was a member of the cabin crews' phone overheating so it may even be that the design of the plane isn't at fault.
Oddly enough if you're above landing weight you dump fuel rather than weapons. Rarely do you plan to launch with so many stores you'll have to jettison them before landing, i.e. anything over that you'd expect to deliver somewhere else, ballistically.
In fact Sea Harriers had an issue with repeated landings causing damage to AMRAAM missiles when they were carried for multiple flights.
I wouldn't really trust Lewis' articles on aviation, as a pilot he makes a great diver...
Re: What is so new about this?
Indeed, I believe it's actually a version of the auto land used in the Super Hornet.
The problem is, while you have human pilots, they have to keep in practice for those occasions when the auto-land doesn't work* which means most landings are done manually anyway...
*Recent events in San Francisco indicate the civilian world may want to re-look at this.
Thought for the Day
Is this surprising, not really, Carrier Auto-land is nothing new, F-4 Phantoms had it in the '60s.
However, UAVs are currently flavour of the month with the politicians because it reduces the likelihood of casualties to your own side because they're not in the plane, at the same time they require large amounts of bandwidth to transmit all the data back to wherever to allow someone to make a decision.
The answer to the latter problem is autonomous UAVs which do all the decision making themselves. The question is, will any politician outside of an all out war let that happen? Certainly in the Vietnam war when the US forces had the capability to destroy enemy aircraft before they could be seen this was deemed unacceptable and you had to have visual confirmation of the target's identity before firing. So despite having spent $Billions developing a capability and doctrine to kill the enemy at range the pilots were forced to close to a position where they were at a disadvantage before they could open fire. You saw a similar thing with the Osama operation where Barrack Obama had a real time video feed of the operation, giving him the ultimate long screwdriver to interfere with the mission.
Ultimately I can't see politicians accepting a drone making decisions about targeting, especially if there's no way to interfere. The problem is if they've already replaced all the piloted aircraft with drones to save money that could leave them defenceless.
'An interesting case would be if someone finds a really valuable asteroid. Salvage? No, because no one can own anything of "outer space."'
Is that true, it says no state can claim part of a celestial body, it doesn't as far as I know say an individual or indeed company can't. It may also mean the Queen could lay claim to the moon which would make it British territory as part of the Crown Estates, but that's probably cheating.
Re: Offline maps gone... or not?
As I understand it from reading the actual press release, the difference now is that when viewing the area you want to cache you just type 'OK Maps' into the search box and it'll then be saved to your device for later use. Apparently there will be updates, hopefully to add a button for the feature rather than typing something only tangentially connected to the task into the search bar...
Re: Non news. Really?
Indeed, the "rogue flight plan" line does smack of 'lies told to children' rather than being a plausible explanation of what happened.
Re: Well, I know which manufacturer not to buy form then.
So where do you get your ethically pure phone from?
Re: Note these words...
Of course there are, until you actually drill down there it's all very highly educated guess work.
I used to work in oil exploration and it wasn't unusual to hear of exploratory wells that produced pure clean water, one underground reservoir of liquid looking much like any other. Still cost a fuck load to drill that first hole mind.
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