Without to much thought
Weight – a 747 is probably a tad uneconomical with only 100 seats as ejector seats weigh a lot more.
twin deck aircraft – how dou you eject the lower deck 9over head lockers will also be a ******.
structural integrity of the aircraft rather than a metal tube you have either a glass top or lots of blow out panels
maintenance requirements.
Oxygen masks and fixings required per passenger
Training requirements for passengers (getting out over water etc)
locating the dead, survivors – at least if they are all in the aircrfat on impact theyre fairly close together (usually), eject them they could be scattered every where.
Not to cut you off at the knees but its a non starter as is the idea of fitting a parachute to the aircraft (what may work on a Gen av aircraft wont work on a jumbo jet down to the scale involved)
(Quoted posting removed by Moderator)
Bloody sunday was a tragic mistake – the difference between the paras on bloody sunday and the IRA viz a viz the murder of innocent civillians is
1) The Paras actions were not sanctioned, they were the result of poor training (in the type of job they were given)., confusion, nervousness and possibly a small amount of stupidity (from higher up).
The IRA set out to murder innocent Civillians. that was there aim and goal.
2) unarmed civillians murdered by the IRA were just that unarmed and unsuspecting
Among the dead on bloody sunday was a man carrying 4 nail bombs,
incedently despite youre assertions to the contrary you are not unarmed if you are throwing rocks and petrol bombs these things Kill.
You (golervaian) and EGBH appear to have got youre history of NI from the fluffy guide to terrorism.
Oh how glorious it must seem to those who were unborn during the troubles. and how noble are the freedom fighters (despite there odd mistake)
Those of us who lived through it dont recall checking our wheel arches, avoiding strange packages, not stepping on loose paving stones, or just being plain told that the old fella down the road has been machine gunned in his lorry because he delivers coal to the wrong people with quite so much fondness.
who asked how can those so young they werent born have such strong and extreme opinions. sadly the answer is beacause they have no knowledge of the troubles and certain members of various (all) communities are keeping things alive with little more than vile propoganda.
On Topic I allways expected the report to come to the conclusions it has – they were the only politically acceptable conclusions possible. I suspect some truths have been glossed over and avoided as unacceptable to the peace process.
The report has been filed an apology made now let all move on in peace.
(Quoted posting removed by Moderator)
Bloody sunday was a tragic mistake – the difference between the paras on bloody sunday and the IRA viz a viz the murder of innocent civillians is
1) The Paras actions were not sanctioned, they were the result of poor training (in the type of job they were given)., confusion, nervousness and possibly a small amount of stupidity (from higher up).
The IRA set out to murder innocent Civillians. that was there aim and goal.
2) unarmed civillians murdered by the IRA were just that unarmed and unsuspecting
Among the dead on bloody sunday was a man carrying 4 nail bombs,
incedently despite youre assertions to the contrary you are not unarmed if you are throwing rocks and petrol bombs these things Kill.
You (golervaian) and EGBH appear to have got youre history of NI from the fluffy guide to terrorism.
Oh how glorious it must seem to those who were unborn during the troubles. and how noble are the freedom fighters (despite there odd mistake)
Those of us who lived through it dont recall checking our wheel arches, avoiding strange packages, not stepping on loose paving stones, or just being plain told that the old fella down the road has been machine gunned in his lorry because he delivers coal to the wrong people with quite so much fondness.
who asked how can those so young they werent born have such strong and extreme opinions. sadly the answer is beacause they have no knowledge of the troubles and certain members of various (all) communities are keeping things alive with little more than vile propoganda.
On Topic I allways expected the report to come to the conclusions it has – they were the only politically acceptable conclusions possible. I suspect some truths have been glossed over and avoided as unacceptable to the peace process.
The report has been filed an apology made now let all move on in peace.
The most irritating device invented!Maybe in the future on booking a flight you will be asked”mobile part of the cabin sir?” They are of course an integral part of todays lifestyle but an irritating one.I cannot see why people get so uptight about being asked to turn of during a flight.Incidentally while refuelling an aircraft once I forgot to clip on the anti stat to the airframe and watched in amazement the sparks jumping from the clip to the airframeand it was a petrol job!The fuel bowser was an old leyland Hippo .So judging from the posts people dont think mobiles could have sparks lurking somewhere!!I suppose kerosene fuel would need much more than a teeny weeny spark!!
Whoops
Instructions are mobiles off in the proximity of the aircraft. Im not convinced a mobile phones going to cause the bowser to explode, on the other hand im not going to bet my life on it, probably best not to Xmit on the walkie talkies either .
From my very shaky memory There was an A340 which mysteriously exploded many years ago and the (french?) report concluded that when a nearby aircraft radar had painted it the space between the fuel and tank acted as a spark gap.
Allways wondered about that one.
[QUOTE=Tango III;1590730]BAP Almirante Grau (CLM-81) still in service ?
I was under the impression she still is, her sisters definatly gone.
mind you I thought the Brazzillian carrier was now defunct, but i keep hearing how brazil will be operating rafale off it (is she big enough)
Rather than search for a “simple example” that’s “oversimplified” (which is actually quite patronising), how about giving a detailed, technical explanation to back up your points. You’re doing precisely what everyone else does; not actually give reasons for your thinking.
I also shouldn’t need to AGAIN mention the fact that I’m NOT talking about audio interference. I’m a professional sound engineer; I know precisely the effect mobile phones have on audio equipment. What I want to hear from you to back up the authoratitive manner in which you speak is a technical reason as to precisely how mobile phone affect aircraft systems beyond making annoying pulsing noises in the headsets.
Ok I rephrase the electromagnatic interferance can manifest itself as the noise on the aircraft audio system or possibly put 1s instead of 0s on a (inadaquetly shielded) digital bus.
Re simplifying many people on these forums are non technical – as such i try to simplify things – It is not an attemp to be patronising, and as i have no knowledge of who you are and youre back ground i was hardly (inentionally) patronising.
I for one when reading discussions on some tecnical issues appreciate things being simplified into laymans terms.
Again I will point out as i stated in my previous post – it matters not one whit whether they affect autopilots, flight directors, wheel position sensors or the hosties knicker elastic, they only have to be a distraction to the flight deck crew to be classed as detrimental to aircraft safety, which is the crux of the argument. (Bold for emphasis not shouting)
In regards to affecting those other systems (except the knicker elastic) I am unaware of any absolute evidence that phones and laptops etc have caused problems, however domestic applliances have notoriesly poor radiated EMI charecteristics and could potentially disrupt low power digital signals, Here it is probably a case of playing safe.
All equipment added to an aircraft has to meet stringent enviromental qualifications including EMI ratings, there are some pieces of equipment that must be kept x feet away from others. some equipment must screen its power cables to prevent interferance.
Given these enviromental requirements I can understand the authorities reluctance to allow domestic appliances on aircraft.
please accept my apologies for my disjointed posting – i tend to write it as i think it and am not the most elequont of people.
Yup, I understand the way mobile phones and power work and yes, they output as much power as they need to… But the plane still flies perfectly safely through much higher power microwave transmissions than a phone will ever radiate. Once I hear a technical explanation as to why that’s different I’ll happily agree with your point. Please feel free to provide that technical explanation.
Paul
P.S. A 3310 interferes with a tv so much because it operates on roughly the same UHF carrier frequencies as analogue TV broadcasts. Thank you for proving why my skepticism is valid.
It was a poor example I know, but i was searching for a simple example.
The safety case is not perhaps as some believe and SCi FI writers will portray of fliy by Nintendo.
Audio interferance that distracts the crew or obscures recieved transmissions has safety implications, for that reason turn off.
Emmisions radiated within the airframe will be of far higher intensity than external signals, additionally they can be radiated into the aircraft wiring and potentially amplified by various systems.
External radiation can and does cause interferance. External man made radiation unless you are flying up the **** of HMS Daring will be far less of a problem.
I think you’re maybe confusing what I said, Dean. I very clearly said I understand the noise they induce on the headsets can be annoying (Ryanair don’t allow phones to be used on takeoff and landing which makes perfect sense) but that’s not the main point of what I’m saying. The main point is that if Ryanair install mobile phone equipment on their aircraft (which presumably is approved by the CAA and whoever else these things need to be approved by), then that fairly conclusively says to me that there are no serious worries about mobile phones screwing with aircraft systems too much. If it poses such a real threat then I’d love to hear an explanation as to why Ryanair allow it and why authorities have approved it.
Your average NOKIA banging away interferes with everything while it hunts for a valid station – hence the instruction to switch them off. (go put a 3310 near a TV)
heres youre B
The aircraft installation has been purposly designed (and approved) with the stricter reglations on radiated emissions etc required on commercial aircraft in mind.
Additionaly where youre own phone can tap into an aircrafts mobile system youre hand set only requires to send a very low power signal so less chance of interferance ..
This is why installations can be and are approved.
(I have somewhat over simplified things)
i remember an individual spouting (all sorts of dribble about aviation in general)
whilst he was in the checkin lines. And attempting to impress all around him remarked ” Of course all this switching off of phones etc is rubbish, i once turned mine on during the flight and nothing happened”
Prompting an engineer also in the queue to ask ” and what the fuXX would you have done if it had you tit”
Navy matters is the best source for information about SAMPSON:
http://navy-matters.beedall.com/sampson.htm
I know its meant to be a step on from what SPY/1 can do but it is hindered by having just two rotating faces. On the other hand its mounted far higher then SPY/1.
As a system Sea-Viper also offers some advantages for example unlike AEGIS which requires the AN/SPG-62 to illuminate the target (changing soon with the adoption of the AMRAAM seeker on Standard) and has the support of a long range volumetric search radar in the form of the S1850M. My major criticism with Type 45 and Sea-Viper is it should have more silos for Aster.
If I recall correctly the 2 rotating faces leave a sector uncovered for about a second. wheras the SPY has 4 faces giving continuos coverage. On the other hand those Arrays are heavy and sampson is mounted a lot higher.
I suppose you pay youre money, you takes youre choice. I personally feel the increased radar horizon with sampson is worth more than 1 second.
I cant help but think that the US and allies are best served by shouting very loudly, that it is their intent to do no more than restore the SK front along the approx line of the DMZ, and to reduce pyongangs offensive capabilities , and then arreange a ceasefire.
the slightest incling that regime change, re unification ia an allied war aim may be enough to provoke a chinese response.
In my comment about the SAS and Israeli nuclear forces I was not replying to the part of your posting that you declared to be off-topic, but to your claim two lines earlier that “Many organisations refuse to confirm or deny anything…”. I chose the two examples of such organisations that will be most familiar to readers. Was the SAS somehow ‘off -limits’ because you had mentioned it?
Youre response was that we were not talking to the above organisations, and perhaps i misinterperated that as you as deliberatly misconstruing what i had written.
I was distracted and perhaps prickly when i was online yesterday so i am willing to concede I was in error regarding your posts.
I’ve now re-read all my postings in this thread and can see nowhere were I have stated or inferred that people who disagree with me are “wrong, idiots or liars”. All I have done is to give an accurate version of what Bill Sweetman had written, plus a bit of background information on the conventions under which press interviews are conducted in the hopes that it will help other forum users judge for themselves whether Bill Sweetman’s conclusion was justified. Each reader is free to form his or her own opinion on this.
I took youre origional post as passing judgement upon my integrity – as I felt id been clear i had no knowledge regarding the article – and was offering an alternate view point based on what other posters had stated happened-
Of course if i hadnt been clear and you had not been following the thread all that closely – then youre post is of course more justifiable, again distracted and prickly.
Re my line about differing opinions not making other people Idiots liars or wrong, it was a general remark aimed at everyone.
However having re read the remarks as written it does look like i was aiming a broadside at youre good self and for that i do offer my sincere apologies.
regards
Lindermyer
Roger that
although if it follows the usual Military development time scales it will probably be nearer 3018
As a sensitive item there will probably never be a clear answer from thales/mbda or the french gov.
That is my point exactly – if nothing else we agree on something.
I have no reason to doubt that THALES etc are investigating active cancellation, (and probably others to).
I think the distinction has to be drawn between investigating and will be on the Rafale F4 in 2012 type claims (random figures). This I suspect is where most of the arguments originate.
[QUOTE
As a technical journalist I have some experience of dealing with these companies. It’s not like trying to talk to the SAS or the Israeli nuclear forces; the companies want to talk about what they are doing and want to see stories about what they are doing appearing in print. While a few companies will lie to journalists, they are the exception. If there is a security problem, the vast majority will indicate this, in many cases either by declining to answer a question and citing security issues, or even by declaring a given subject area ‘off limits’ before the interview begins. I’ve never experienced the “Many organisations refuse to confirm or deny anything” syndrome, while the only time I’ve heard someone tell a journalist ‘no comment’ has been in movies.
QUOTE]
You appear to be deliberatly miss reading my posts, In the first implying i was lying. in the second taking my off topic and random example, and answering as though this was my argument after I had CLEARLY stated the SAS quote was AN EXTREME AND OFF TOPIC EXAMPLE.
(one i used simply because I appreciate sometimes language differences can lead to confusion. –
Please feel free to read a bit more of the thread and you will see that I have not said at any point that Thales Dassault are NOT working on active stealth, indeed i have readily accepted the possibility (i have stated that I dont think they will succede)
Now re Mr sweetman I like others feel that the refusal to answer a question is neither a confirmation or denial of the accuracy of the question.
Others believe that failure to issue a denial is confirmation of accuracy.
Arthuro has explained why he believes this to be the case, I have attempted to explain why i believe it is not necasserily the case.
this differring opinion does not make either of us wrong, idiots or liars.