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#31
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Does anyone know of a way to activate an EPIRB automatically in the event of a crash ? Alright: challenge to all of the electronics whizz-kids out the how about adding a tiny glider mounted tri-axial accelerometer that plugs into the EPIRB? If you have a mid-air or ride your glider into the crash, it will activate. If you bail out and sever the connection, it will activate or you turn it on yourself after you landed out in the boonies where your cell phone dosen't work. Uli Neumann Ian, that question is exactly why I posted the 'challenge' above. Uli |
#32
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Don Johnstone wrote:
Which is why proper aircraft PLBs, not the marine EPIRB or backpackers PLB, have that capability http://www.sarbe.com/g2r.htm which has a 'G' switch activation amongst others (see data sheet on page) they also produce models for the current frequency SABRE 5/6 for example. I have looked at other sites and the PLBs I have seen have the ability to automatically activate. http://www.hr-smith.com/products.htm This site has no details on the units and the pictures don't load. Is there site that describes them in detail, particularly the activation, and has a picture? Is there vendor for them, or at least prices? I couldn't either. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#33
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Tim Newport-Peace wrote:
X-no-archive: yes In article , David Kinsell writes 309 wrote: Just wait until the civil aviation authority reuqires you to trade your VolksLogger for an 88 parameter Digital Flight Data Recorder (a.k.a. "black box," in airline parlance), which will require everything short of a rectal probe. They HAVE contributed to aircraft safety, albeit for the NEXT generation of pilots and aircraft. Understanding what happened (and studying how to prevent it) is important to helping our sports survive. A shame our data loggers aren't being force fed to the power aviation fleet. You're making a little joke? At best, the information to be extracted is rather minimal. Usually, there's nothing there at all, as the little backup battery held in place by a simple spring clip is jarred out of place and the data in RAM goes away in seconds. Hardly a substitute for a black box. -Dave That might be true of some older recorders, but later recorders are better in their construction and the use of Non-volatile memory. The analysis of IGC traces post accident can be informative, of sometimes show that the accident became inevitable some time before the actual event. Plan Ahead! Let's see, vertical descent became extreme. Was that because the wings fell off, or did the wings fall off after exceeding redline? Without attitude indication, cockpit recordings, and a host of other parameters recorded in real black boxes, there's little to go on. The data may be interesting, but hardly the stuff that prevents future accidents. It has been written into the specification for IGC Flight Recorders for some time that they should be "Crashworthy". Heck, if it's that easy, why not require that gliders be "Crashworthy"?? That would solve the whole problem. Just build them out of the same stuff they use for IGC Flight Recorders. -Dave Tim Newport-Peace "Indecision is the Key to Flexibility." |
#34
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Are we mixing up terms here . . . or am I just confused (as usual)?
PLB = personal locator beacon (i.e. small and meant to be carried) EPIRB = emergency position indicating radio beacon ELT = emergency locator transmitter Of these, AFAIK, only ELT's, either the old 121.5/243 MHz or the newer 406 MHz include a G-switch to trigger the unit (hopefully) in the event of a crash. The post I made the other day on 406 MHz pricing had some misinformation. The 406 ELT Chief Aircraft has for $1589 USD, has three externally mounted antennas required. If you'd like a single output (antenna) version, that'll be $1825. If you'd like your shiny new ELT to get GPS info (it doesn't have one built in just yet), that'll cost an additional $1358.00. That little Piper Super Cub that took off from Jackpot Nevada last Wednesday, father and 17 year old daughter, bound for Davis California is still missing. Much of the terrain in between is high desert, mountains, and desolate. Having the beacon with me is more important to me that having it go down with the glider. I'm buying a PLB with integral GPS for about $500. bumper "T o d d P a t t i s t" wrote in message ... Don Johnstone wrote: Automatic activation in a crash is absolutely essential. Which is why proper aircraft PLBs, not the marine EPIRB or backpackers PLB, have that capability In that case, assuming they can be properly mounted they'd be great. T o d d P a t t i s t - "WH" Ventus C (Remove DONTSPAMME from address to email reply.) |
#35
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Eric, first of all, your participation here, as always,
is welcome, and I am glad you have responded. As usual, I respect your adding your (very well thought out voice) to this. I'm going to make some points here that are subtle. First of all, you are right, I was probably using hyperbole to make a point. There may not be hundreds of ELT accidental activations caused by this rule. It may be less, or even none. I don't know for sure, but I am going to write about reasons why accidental activations may be more common than your experience. Hmmm...making some guesses he Is your trailer very well padded so the fuselage isn't damaged during trailering? Do you have the kind of ELT that required a bit more sophistication to install, and has a remote activation button with a small LED light that tells you if it accidentally activates? Did you install this ELT voluntarily, and carefully read the documentation with it about how to install it correctly and how to dial in 121.5 on the radio to listen for false activations? You land real gentle in your nice glider don't you? Thats why you have so many flights and trailerings, instead of having it in the repair shop, right? I'm guessing that for you, and most of your friends, the answer to all of these will be 'yes.' For the folks at the 'margin' for whom the added ELT cost is almost too much to ask to enter a contest, the answer to these questions may be 'no.' Their trailers may not be the $5000-$10,000 cobra with super suspension. The ELT may be the old non-remote kind bought secondhand with no documents, and installed themselves non-perfectly. Their landiing may not be pretty. These same folks, at the margin, may highly respect the volunteer efforts of the contest organizers and want to install the ELT to accomodate their wishes. But this may not change the economics that they can't afford a brand new ELT with remote LED professionally installed, much less a 406MHz GPS unit... You and I are talking about different things. I don't think you or most of the other experienced, devoted, contest pilots with moderate incomes will have that much of a problem complying with this 'minor change' to the rules. But others, including Marc Ramsey, and me, and some others see this as another brick stacked up in a wall that creates a slightly larger barrier to entry into this sport. This barrier affects lower-income, entering pilots more than those who are already contest fliers. And at some point too many bricks makes the wall too high. There will be some who overcome this, and there will be some who don't. I think the contest numbers next(?) year of #s of entrants who have installed ELTs, and numbers of 'new' entrants compared to prior years, will speak to this. I hope I am wrong. I honestly do. In the meantime I will bang the drum loudly about barriers to entry, especially for lower-income pilots. And I hope this will strike a balance opposite those who are willing to require $$$$s for marginal improvements in the name of 'safety.' On the subject of ELTs, I have had one go off accidentally (the cheapo non-LED kind) when the switch was flicked by putting in a backpack in the backseat. After engine shutdown I caught it by the bleedover on the radio (ASEL). Three weeks ago a fellow pilot (low timer) had the police break into his hangar, and subsequently call him, after a hard landing (ASEL). Low-timers are more likely to fly lower-quality equipment, land harder, and have less sophisticated senses about how to detect accidental activation. And they won't as commonly have the LED on to warn them of accidental activations. Anyway, I enjoy further discussion on this, if you think it is productive, and appreciate your thoughts and counterpoints. At 00:12 08 September 2005, Eric Greenwell wrote: M B wrote: G activated ELTs in gliders? This should make the contest pilots very well known with the local police and CAP. After a few hundred false ELT alarms from contest pilots who have the thing bumping around in the trailer, we'll see how this pans out. I've trailered my ELT equipped glider for about 60,000 miles without a single activation, and I don't even secure it for travel. I've made about 300 flights with it, again without activation. I don't know what airplane pilots do to accidentally activate theirs, but it doesn't seem to happen in the ELT equipped gliders I know about. I haven't crashed with it yet, so I can't document that part of it's ability. -- Change 'netto' to 'net' to email me directly Eric Greenwell Washington State USA Mark J. Boyd |
#36
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At 16:18 08 September 2005, Bumper wrote:
Are we mixing up terms here . . . or am I just confused (as usual)? PLB = personal locator beacon (i.e. small and meant to be carried) EPIRB = emergency position indicating radio beacon ELT = emergency locator transmitter Of these, AFAIK, only ELT's, either the old 121.5/243 MHz or the newer 406 MHz include a G-switch to trigger the unit (hopefully) in the event of a crash. There is no mix up of terms. The Sarbe GR2 series of Personal Locator Beacons, that is the ones you carry do have a G switch to trigger the unit in the event of a crash (or ejection). Details at http://www.sarbe.com/g2r.htm. From the menu on that page you can select Datasheet which gives details. The Sarbe beacons are in use worldwide by the military but there are civilian versions. I am awaiting a reply from them as to cost but it won't be cheap. While the Sarbe site shows details of the earlier versions Sarbe5/6 they have said that as from January this year they do not accept orders for those models, presumably because they do not have the new frequency. I would add that I do not work in the aviation industry or have any connection with Sarbe, I do know a couple of people who vouched for their efficiency. A firm callled H R Smith also provides PLBs which are automatically activated see: http://80.168.111.36/servlet/HRSmith...displayproduct s&prodtype=Personal+Locator+Beacon You will have to re-construct the URL to get it to work if it is split over 2 lines. I have no other details of these units. EPIRBs are mainly for use in the marine world. PLBs and ELT are produced for aviation use. |
#37
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Don Johnstone wrote:
There is no mix up of terms. The Sarbe GR2 series of Personal Locator Beacons, that is the ones you carry do have a G switch to trigger the unit in the event of a crash (or ejection). Details at http://www.sarbe.com/g2r.htm. From the menu on that page you can select Datasheet which gives details. Are you sure it is crash activated? Or is it activated by the G loads when the pilot ejects? I couldn't determine that from the brochure. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#38
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At 18:06 08 September 2005, Eric Greenwell wrote:
Don Johnstone wrote: There is no mix up of terms. The Sarbe GR2 series of Personal Locator Beacons, that is the ones you carry do have a G switch to trigger the unit in the event of a crash (or ejection). Details at http://www.sarbe.com/g2r.ht m. From the menu on that page you can select Datasheet which gives details. Are you sure it is crash activated? Or is it activated by the G loads when the pilot ejects? I couldn't determine that from the brochure. Both, and immersion in water and pulling the pin. -- Change 'netto' to 'net' to email me directly Eric Greenwell Washington State USA |
#39
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Not so fast.................Artex has re-called these already....
tim Wings & Wheels www.wingsandwheels.com "Paul Remde" wrote in message news:mLITe.316115$_o.53729@attbi_s71... Hi, I will soon have "low cost" 406 ELTs from Artex for $995. They are listed on my web site. I don't have them in stock yet but they should be available in a few weeks. http://www.soarmn.com/cumulus/elts.htm Good Soaring, Paul Remde Cumulus Soaring, Inc. http://www.cumulus-soaring.com "bumper" wrote in message news ![]() "Martin Eiler" wrote in message ... Most people consider pilot safety as everything needed until that pilot is safe and sound at his intended destination. Pilots spend thousands of dollars per year on auto, glider and life insurance. Yet there is this whine about spending a few hundred dollars one time on a piece of equipment that could mean the difference between life and death, in the event of a crash. As we are all aware, the old 121.5 MHz ELTs are on their way out, with only 3 more years of promised satallite coverage. The few 406 MHz ELTs that I've seen have yet to see much of a price drop. From Chief Aircraft: Ameri-King AK-450, a popular 121.5 ELT: $183.75 USD Artex G406, a 406 MHz ELT: $1589.00 Handheld radios, cell and satellite phones are all excellent items for your land out kits, but none of them are automatically activated during a crash; nor will phones or radios be of any use if you become unconscious. One of the many problems with the real world experience of the older ELTs, is that in most cases they have not activated automatically in a crash. They do, however, seem to activate for a myrid number of non-crash reasons such as hard landings and whatever. And almost all activations have been false. Pilots who fly in remote, mountainous and wilderness areas should reconsider installing an ELT, if not for themselves, then maybe for their families who may lose a loved one simply because they weren't found in time. M Eiler The argument I've seen most often against the US contest requirement for an installed ELT, is not that there isn't a need for this sort of thing at all, but rather that a PLB (personal locator beacon) is a more viable solution. PLBs can be small enough to attach to a parachute harness, operate on 406 MHz (so won't become obsolete in 3 years), can be had with built in GPS to send a precise location, and will direct search personnel to the pilot as opposed to the wreckage. Further, they are registered to the pilot so searcher know who they are looking for, and obviously will work in more than just one vehicle or activity. Prices have come down to the $500 -$700 range (w/ GPS built in). bumper |
#40
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Don Johnstone wrote:
Are you sure it is crash activated? Or is it activated by the G loads when the pilot ejects? I couldn't determine that from the brochure. Both, and immersion in water and pulling the pin. And do they claim the G threshold is suitable for small general aviation aircraft? Again, everything I read on their site suggests these units are not aimed at people like us. Maybe I'm not finding the right section. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
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