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Jamie,
That is exactly what I was thinking. A control point. Yes, sort of like what we locally call an IP (initial point) when entering on the 45 for our normal pattern to land. We are fortunate to have a huge metal tank maybe 50 meters diameter that could be used as this remote "control point" and is in line with the 45 entry (sort of). It is probably 3-4 km away. At 500ft AGL in a 2-33 with a headwind this would be a little close, but in the L-13 or anything sexier it looks ok. Thanks for your post! Control point. I like that. Is it scored as an OZ or a cylinder? Scoring as an OZ would take a little bit of thought, and as a cylinder, I'd expect it'd need to be pretty narrow to not cover the airport. In article , John Doe wrote: Mark, I think what you are getting at is what we in the UK call a control point, a final turnpoint that must be rounded in the normal way, but is only maybe 5-10 km from the airfield, each glider is a few hundred feet (or more depending on the pilots saftey margins) up at this point and after turning the control point, competitors turn to the airfield and dive to a known linear finish gate. There is generally no minimun finish height so often the gate is crossed under 50 ft but as all competitors are coming in from a fixed direction towards a small and clear area of land it eliminates the vast majority of head to head at low altitude issues and I've never seen congestion at a control point myself (altough as my own competition experience is rather limited I won't say it never happens). As for non comp gliders, everywhere I've been competing the daily briefing for non-comp pilots always stressed the comps procedures as well as use of the radio to ensure separation in launch, landing and finishing. As long as the finish gate is suitably chosen to be away from the main landing area and obstacles with space to land after as well as an easy entry into circuit for those with the speed to do so it can be both a safe and an exciting way to finish without the artificial complications of raised finish lines. John, Whilst some of those accidents are attributable to finish gates, I'd certainly question your thinking the last three. Taking the Discus crash for example, in a Discus (in which I have a reasonable if not spectacular amount of time), 500' is adequate, if not totally comfortable, for a decent enough circuit, that crash, as well as the others, from the reports seem to be the whole 'slightly low in the circuit leads to a poor turn leading to a spin in' issue. Where the blame in that lies is the topic for another thread but that, like the other last three, does not seem to be attributable directly to finish gate issues as surely a pilot just making it over a 500' 1 mile finish gate would be in exactly the same situation as someone who has just got a few hundred feet of height from a competition pullup? The others seem to be 'insufficient speed, insufficient time to recover from the spin', afaiks the same situation as trying to scrabble over a start gate at 450' and screwing up. It's been said before but unfortunately you can't legislate good judgement. Cheers Jamie Denton -- ------------+ Mark J. Boyd |
#2
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![]() I'm in complete agreement. I don't fly contests, likely never will, but I sure *used* to enjoy the contest finishes. I suppose this is a case of different strokes for different folks...I watch these and think to myself ....'What's the point?'...and have a particularly hard time explaining the logic of this manuever to non-glider aviators. But then I don't stare at teenagers burning rubber either ![]() What a shame they destroyed the best part of contests for the spectators. Like there are a.) any in the first place, and b.) the few there are will now stop attending. ![]() bumper ZZ Minden |
#3
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I was afraid we might go a whole year without a finish
height debate - Wheee! 9B At 05:30 11 March 2005, Marc Ramsey wrote: Kilo Charlie wrote: Every single one of these is a stall spin accident. They are examples of poor judgement and are not different than any other stall spin accident....e.g. from base to final. To suggest that this is not related to judgement but to the gate is a huge stretch. Some are not even contest flights and are therefore unrelated to finish gates at all. So, stalling and spinning moments after what are clearly, in several cases (including the most recent), botched gate finishes (i.e., insufficient energy) has absolutely nothing to do with the use of a gate, while stalling and spinning at 600 feet while trying to sneak over the edge of a finish cylinder, proves that cylinder finishes are dangerous? An example of an accident that is related to the finish gate is if there were a midair at the gate. You've got it! I can choose not to finish at 50 feet, but I have no control over the potential for a midair. I have had trouble several times with having to land between gliders crossing my base leg low and fast on their way to the finish gate. There was also the time someone cut me off at the gate, by hooking it 100 feet in front of me. Maybe I missed the finish calls, or maybe they didn't make them, it really doesn't matter. Poor judgment and bad luck may well equal two dead contest pilots one of these days. The bottom line is this, whoever is fastest with a 50 foot gate, is also going to be fastest with a 500 foot cylinder. So, why do some insist upon trying to force use of a 'fun' finish procedure that quite a few of us find dangerous? As far as I'm concerned, if even one participant objects, a gate shouldn't be used (and, yes, I have objected, and have been overruled). If everyone agrees, have a good time... So it brings back to attempting to legislate good judgement. Yeah, what a silly thing to do... Marc |
#4
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Bill Daniels wrote:
You sound like a bunch of wusses. If the kitchen's too hot for you, get out. This particular, 'Wuss' has flown 200 combat missions in Vietnam (RF-4C) and have a hand full of Air medals + a DFC. I didn't take unnecessary chances over there and I haven't done it in 4300 hours spent racing sailplanes. The advent of GPS has completely negated the need for the 'Neanderthal' finish line. Why do we keep it in the rules? Allow me to touch on another little point, the FAR's don't allow us to go below 500 feet at places like an airport, unless we are in the act of landing. Driving in at 50 feet, we aren't in the act of landing, are we? Who want's to explain that in court? JJ Sinclair |
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![]() Allow me to touch on another little point, the FAR's don't allow us to go below 500 feet at places like an airport, unless we are in the act of landing. Driving in at 50 feet, we aren't in the act of landing, are we? Who want's to explain that in court? JJ Sinclair Oh for God's sake JJ.....you know full well that a low pass is LEGAL re the FAR's when over an airport. If you don't believe that then explain why there have been numerous instances of the FAA being present during finishes at airports around the US for years without a single citation. When we do passes for fun (yes they can be fun for those of you that are thinking after reading these threads that only psychotic wackos do them) at our local airport we do them down the runway with radio calls typically at 10, 4 and 1-2 miles alerting traffic and asking for advisories. So help me understand how that is ANY different than a landing. And just to ensure you that I really am a rational being....I broke off a pass last weekend when an ultralight and other glider traffic presented a possible conflict. Casey |
#6
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Give us the FAR. Thanks!
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#7
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Most people do not understand the implications of having flown an RF-4
in Vitenam. What I know about the RF-4 in Vietnam I learned while going through USAF pilot training in the early 80's. There was a video in our viewing room called "Alone, Unarmed, and Unafraid." It was about the RF-4. You see, the RF-4 has no weapons, only cameras. After the US would bomb something, as you might imagine, all the people that had lived through the bombing were really ****ed. They were real eager to damage something US and they knew that they would have a chance by just waiting at the bombed out sites for the lonely RF-4 that was going to be coming by soon to take pictures. The damage isn't real until there's a picture, gotta have a picture. The RF-4's defense was low altitude and speed---lots of speed. And they still got there ass shot up all the time. 200 missions in an RF-4 over Vietnam. I can't possibly imagine what might qualify as an unnecessary risk in those circumstances. I tip my hat. Fred John Sinclair wrote: Bill Daniels wrote: You sound like a bunch of wusses. If the kitchen's too hot for you, get out. This particular, 'Wuss' has flown 200 combat missions in Vietnam (RF-4C) and have a hand full of Air medals + a DFC. I didn't take unnecessary chances over there and I haven't done it in 4300 hours spent racing sailplanes. The advent of GPS has completely negated the need for the 'Neanderthal' finish line. Why do we keep it in the rules? Allow me to touch on another little point, the FAR's don't allow us to go below 500 feet at places like an airport, unless we are in the act of landing. Driving in at 50 feet, we aren't in the act of landing, are we? Who want's to explain that in court? JJ Sinclair |
#8
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Reminds me of a comment I heard a while back from a FAA ATC Safety Rep.
it went something like this. My Idea of playing it safe is putting another 1/2 mile spacing between two airplanes. An F16 pilot's Idea of playing it safe is firing a second Sidewinder in case the 1st misses. Brian |
#9
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At 05:00 12 March 2005, Kilo Charlie wrote:
Oh for God's sake JJ.....you know full well that a low pass is LEGAL re the FAR's when over an airport. If you don't believe that then explain why there have been numerous instances of the FAA being present during finishes at airports around the US for years without a single citation. A low pass may be tolerated by the FAA when done down the runway. Our finish gates are normally not situated so that the sailplane makes a low pass right down the runway. Anyway, the big potential problem isn't getting a citation from the FAA, it's being named in a law suit. Those of us that run soaring contests have an obligation to do everything in our power to make the event as safe as possible. Bill took some of us to task for being 'Wooses' and said we should run our contests like they did in the '66 nationals at Reno-Stead. Quote from Sterling Starr's excellent article, 'Ten pilots, because of landing damage and other problems, were unable to compete.' And this was only after 4 days. I'll take our present rules, but we have an opligation to do this as safe as we possibly can. JJ |
#10
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Hi Mark
A control point in simply an additional turnpoint (as opposed to a remote finish) placed next to the airport so as to bring gliders round to finish from a direction where an appropriate finish gate can be provided. As per UK rules this is the usual 1/2 km radius circle and 20k (I think) thistle. If you aren't sure about the thistle part (I don't know if it has an equivalent in US rules) there is a diagram on page 11 of: http://www.gliding.co.uk/forms/competitionrules2005.pdf For an example of Control Point use look at this task from last years junior nationals: http://www.lasham.org.uk/comps/natio...p?comp=b&ddate =Saturday%2021st%20August Lasham has a very open finish line coming in from the west but no suitable place to locate a finish line from the north, so each day where the task came in from the north an aditional turn point (in this case TP4) was added to force competitors to approach from the west. A glider has not finished until it has crossed an on airfield finish line or entered the finish circle (page 12 of the above pdf). You mentioned the self selection of turnpoints in the US Sports class (I assume that is similar to our Club Class). In this case might it not be an idea to have the provision for a mandatory turn point at the end of the task and say 'you may select the order of your turnpoints but your final turnpoint must be this one'. This would seem to eliminate the whole problem of converging gliders at low level without necessitating the use of such a large finish cylinder (which I have to admit I am sceptical of the value of). There are obvious issues regarding the use of thistles and penalty sectorsif the direction you are approaching the airport is not fixed (in UK competitions, the order of turns is usually fixed), but I think these could be alleviated by the use of a simple 1k cylinder. The idea of the thistle I believe is to allow a pilot to round a turnpoint further out if the conditions at the turnpoint are unfavorable, but as the control point is very near the finish a pilot would be trying to get to that exact location so the thistle could be discarded at this point, leaving a 1 or 2 km radius cylinder as the only point. Cheers Jamie p.s. I have to admit that on that day during the Juniors I forgot about the conrol point and went straight for the finish, recording a gps landout a few k from the airfield, d'oh! At 18:30 11 March 2005, Mark James Boyd wrote: Jamie, That is exactly what I was thinking. A control point. Yes, sort of like what we locally call an IP (initial point) when entering on the 45 for our normal pattern to land. We are fortunate to have a huge metal tank maybe 50 meters diameter that could be used as this remote 'control point' and is in line with the 45 entry (sort of). It is probably 3-4 km away. At 500ft AGL in a 2-33 with a headwind this would be a little close, but in the L-13 or anything sexier it looks ok. Thanks for your post! Control point. I like that. Is it scored as an OZ or a cylinder? Scoring as an OZ would take a little bit of thought, and as a cylinder, I'd expect it'd need to be pretty narrow to not cover the airport. In article , John Doe wrote: Mark, I think what you are getting at is what we in the UK call a control point, a final turnpoint that must be rounded in the normal way, but is only maybe 5-10 km from the airfield, each glider is a few hundred feet (or more depending on the pilots saftey margins) up at this point and after turning the control point, competitors turn to the airfield and dive to a known linear finish gate. There is generally no minimun finish height so often the gate is crossed under 50 ft but as all competitors are coming in from a fixed direction towards a small and clear area of land it eliminates the vast majority of head to head at low altitude issues and I've never seen congestion at a control point myself (altough as my own competition experience is rather limited I won't say it never happens). As for non comp gliders, everywhere I've been competing the daily briefing for non-comp pilots always stressed the comps procedures as well as use of the radio to ensure separation in launch, landing and finishing. As long as the finish gate is suitably chosen to be away from the main landing area and obstacles with space to land after as well as an easy entry into circuit for those with the speed to do so it can be both a safe and an exciting way to finish without the artificial complications of raised finish lines. John, Whilst some of those accidents are attributable to finish gates, I'd certainly question your thinking the last three. Taking the Discus crash for example, in a Discus (in which I have a reasonable if not spectacular amount of time), 500' is adequate, if not totally comfortable, for a decent enough circuit, that crash, as well as the others, from the reports seem to be the whole 'slightly low in the circuit leads to a poor turn leading to a spin in' issue. Where the blame in that lies is the topic for another thread but that, like the other last three, does not seem to be attributable directly to finish gate issues as surely a pilot just making it over a 500' 1 mile finish gate would be in exactly the same situation as someone who has just got a few hundred feet of height from a competition pullup? The others seem to be 'insufficient speed, insufficient time to recover from the spin', afaiks the same situation as trying to scrabble over a start gate at 450' and screwing up. It's been said before but unfortunately you can't legislate good judgement. Cheers Jamie Denton -- ------------+ Mark J. Boyd |
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