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Everything posted by speedy
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We have some fix for that. There is a velcro on the pin end of the static line which is mated to its pair attached to the spring loaded PC. I can make some pictures about it if its needed. We also have velcro attaching the spring loaded PC to the static line. It did not fix anything. The student still caught the PC, the reserve (cypres activated) fired in to the mess. Since then the first jumps are made with direct bag. Once the student shows the ability to make a stable exit we then progress onto pilot chute assist with static line. Dave Fallschirmsport Marl
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I did ask our pilot that yesterday! He answered, straight ahead and hope to clear the trees at the end of the runway. He also said that it is critcal to react quickly enough, feather the prop to reduce drag, control the aircraft to stop it turning over the engine. I thought at the time, ohh he's going to put us in the trees, but after reading what you posted, it seems he has the right plan. Interesting. Dave Fallschirmsport Marl
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A View On Global Warming Tonight on CNN Headline News
speedy replied to rushmc's topic in Speakers Corner
You've got a point there. I reckon he's secretly eating babies after dark. Edited to add: BTW this is definately an alarmist trait. Get the denier off topic discussing religon and we can put all those CO2 taxes in before he notices. Dave Fallschirmsport Marl -
A View On Global Warming Tonight on CNN Headline News
speedy replied to rushmc's topic in Speakers Corner
What do you have to say about the buddhist religon? Is that also a bigotted, mysoginistic, homophobic, control freak religion? And who is on their payroll? Dave Fallschirmsport Marl -
A View On Global Warming Tonight on CNN Headline News
speedy replied to rushmc's topic in Speakers Corner
People like you, come and go on DZ.com Your exit will be just as fast as the others Bye bye Dave Fallschirmsport Marl -
Ahhhh ... compensated ballasts What's that in German? Never mind I'll figure it out. The only problem is I will have to wait a million years before the ones I've got burn out Dave Fallschirmsport Marl
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I find this works quite well... Take the your net salary and divide it by the cost of a jump ticket. That's how many jumps you can do. Then subtract a couple of jumps for food, a few more jumps for rent and some for the car..... no... fuck the car ... that's too many jumps. Dave Fallschirmsport Marl
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That's true, I am used to switching on the light and... well there is instant light. The CFL's take time to provide the light. This means I tend to leave them on most of the time in the evening. I don't save much electricity with them, but I certainly don't need to change them as often. Dave Fallschirmsport Marl
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A View On Global Warming Tonight on CNN Headline News
speedy replied to rushmc's topic in Speakers Corner
[reply Its 2-1 combination with oxygen is what your brain appears to be stewing in. OMG I've got DHMO poisoning Dave Fallschirmsport Marl -
A View On Global Warming Tonight on CNN Headline News
speedy replied to rushmc's topic in Speakers Corner
So what is burning? The titatnium [sic] or the nitrogen? Dave Fallschirmsport Marl -
So there is no benefit in removing the potatoes from the system
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With that little correction I would agree with the statement. Although the alarmists would not. They could never be wrong. It might smell funny, but all Dr Higgs seems to saying is that maybe the public have a misconception about what "peer reviewed" means. Dave Fallschirmsport Marl
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Thanks, I knew there was a catch somewhere. Dave Fallschirmsport Marl
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Tandem Instructors, let's see your handcam videos
speedy replied to steveorino's topic in Instructors
No offense, but when I compare that video with the outside video I did last sunday, there is no comparison. We watched the video at work with a lot of whuffos ( generally they are the people we try to impress with Tandem videos). They loved the view of the passanger leaving the aircraft. They like the view of the ground with the tandem "plummeting" downwards. They also liked the close shots I did, like what you have on the handcam. They commented on how the chute looked during deployment. There again, maybe I am just a vidiot trying to save my job Dave Fallschirmsport Marl -
Australia announced it would phase out the sale of inefficient incandescent light bulbs by 2010, replacing them with highly efficient compact fluorescent bulbs that use one-fourth as much electricity. This is all done in the name of saving CO2 emissions and thus the planet. So let's look at it in more detail. In general, the coefficient is about 2.3 lb CO2 per kilowatt-hour (kWh) of electricity. You can calculate the kWh of electricity by multiplying the number of watts (W) the appliance uses times the number of hours (h) it is used, then dividing by 1000. For example a 60-W light bulb operated for 24 h uses (60 W) x (24 h) / (1000) = 1.44 kWh. This use of electricity would produce an emission of (1.44 kWh) x (2.3 lb CO2 per kWh) = 3.3 lb CO2 if the electricity is derived from the combustion of coal. Thus if you have your 60W bulb burning 24/7 you could conceivably cause the emission of ~1200 lb CO2/year but even heavily used lights would be pushing to be on 6/7 rather than 24/7, so total emission caused might be 300 lb/year, a 1/3rd increase in efficiency could then "save" 100 lb CO2/year. For comparison, a person (at rest) exhales about 800 lb CO2 per year, so changing out 8 heavily used incandescent bulbs for CFLs delivers a theoretical "saving" equivalent to preventing one such couch potato breathing but you'd need to change many times more to equate to people who engage in physical exercise, play sport or whose work involved 8 hours of manual labor per day since respiration rises significantly with effort. Dave Fallschirmsport Marl
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http://newsbusters.org/node/12585 "Peer reviewed" is a term that is tossed around a lot here in speakers corner. I don't know who Dr. Robert Higgs is or if his views have been peer reviewed, but it was an interesting read non the less. Dave Fallschirmsport Marl
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A View On Global Warming Tonight on CNN Headline News
speedy replied to rushmc's topic in Speakers Corner
If only we could get this burning of CO2 problem solved, we would have a complete new source of energy Sort of like a perpetual motion thing. Burn CO2 to produce more CO2. Another problem is that it is only a trace gas in the atmosphere. Now if we could burn nitrogeon..... Dave Fallschirmsport Marl -
Let's do the sums. €30 per tandem before tax. take it easy and do 5 Tandems a day. = €150 / day. Jump 300 days per year... 150 * 300 = €45000 That is between $25,000 and $80,000 Dave Fallschirmsport Marl
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I've got my ticket booked June, 9th - 10th, to jump from.... (see attached) Dave Fallschirmsport Marl
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If the DZ has the exit seperation correct, it does not matter at what altitude the vidiot deploys. (edit: going low with the formation is shortening your chances though). I prefer to deploy immediatly when the formation breaks off. If I have a good deployment if will save me from bad trackers. If I have a full speed malfunction, I have to hope the others have tracked well. Groups following are more of a problem for the people below me. They could be tracking up the jump run. Exit separation is the key, not deployment altitude (apart from multiple aircraft DZ's). Dave Fallschirmsport Marl
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Here's a good one. It's the freestyle move, "Full rotate on rig during landing". The skydiver in question said "It was a soft landing" Dave Fallschirmsport Marl
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Using a flexible cable to close the container instead of a pin
speedy replied to autoset's topic in Gear and Rigging
Damm right! I don't know how much bridle would come out on the rig pictured. I do know that with that length of pin it would be a definate mal on my rig. Tandems and static line flex pins operate under different conditions to a sport rig. On static line the whole weight of the jumper is pulling the pin out. On a tandem, the drogue is somewhat bigger than a sport pilot chute. Dave Fallschirmsport Marl -
Removable slider - opening differences
speedy replied to MrBrant's topic in Swooping and Canopy Control
I found no difference at sub-terminal. I have never tried it at terminal. Dave Fallschirmsport Marl -
"For the global mean [temperature], the most trusted models produce a value of roughly 14 Celsius, i.e. 57.2 F, but it may easily be anywhere between 56 and 58 F and regionally, let alone locally, the situation is even worse." The Elusive Absolute Surface Air Temperature (SAT) (NASA Goddard Institute for Space Studies) "The forcings that drive long-term climate change are not known with an accuracy sufficient to define future climate change." -- James Hansen, "Climate forcings in the Industrial era", PNAS, Vol. 95, Issue 22, 12753-12758, October 27, 1998. "In sum, a strategy must recognize what is possible. In climate research and modeling, we should recognize that we are dealing with a coupled non-linear chaotic system, and therefore that the prediction of a specific future climate state is not possible." -- Final chapter, Draft TAR 2000 (Third Assessment Report), IPCC (Intergovernmental Panel on Climate Change). "Because there is considerable uncertainty in current understanding of how the climate system varies naturally and reacts to emissions of greenhouse gases and aerosols, current estimates of the magnitude of future warming should be regarded as tentative and subject to future adjustments (either upward or downward)." -- Climate Change Science - An Analysis Of Some Key Questions, p1 (Committee on the Science of Climate Change, National Research Council) ISBN 0-309-07574-2. "Reducing the wide range of uncertainty inherent in current model predictions of global climate change will require major advances in understanding and modeling of both (1) the factors that determine atmospheric concentrations of greenhouse gases and aerosols, and (2) the so-called “feedbacks” that determine the sensitivity of the climate system to a prescribed increase in greenhouse gases." -- Climate Change Science - An Analysis Of Some Key Questions, p1 (Committee on the Science of Climate Change, National Research Council) ISBN 0-309-07574-2. "Because climate is uncontrollable . . . the models are the only available experimental laboratory for climate. . . . However, climate models are imperfect. Their simulation skill is limited by uncertainties in their formulation, the limited size of their calculations, and the difficulty of interpreting their answers that exhibit almost as much complexity as in nature." -- Climate Change Science - An Analysis Of Some Key Questions, p15 (Committee on the Science of Climate Change, National Research Council) ISBN 0-309-07574-2. So, how far have we progressed in the modeling game over the last decade? Not very far at all. In a pending paper, Dangerous human-made interference with climate: a GISS modelE study we find the following text regarding GISS modelE, fairly described as a state-of-the-art climate model: 2.4 Principal Model Deficiencies ModelE (2006) compares the atmospheric model climatology with observations. Model shortcomings include ~25% regional deficiency of summer stratus cloud cover off the west coast of the continents with resulting excessive absorption of solar radiation by as much as 50 W/m 2 , deficiency in absorbed solar radiation and net radiation over other tropical regions by typically 20 W/m 2 , sea level pressure too high by 4-8 hPa in the winter in the Arctic and 2-4 hPa too low in all seasons in the tropics, ~20% deficiency of rainfall over the Amazon basin, ~25% deficiency in summer cloud cover in the western United States and central Asia with a corresponding ~5 ° C excessive summer warmth in these regions. In addition to the inaccuracies in the simulated climatology, another shortcoming of the atmospheric model for climate change studies is the absence of a gravity wave representation, as noted above, which may affect the nature of interactions between the troposphere and stratosphere. The stratospheric variability is less than observed, as shown by analysis of the present 20-layer 4°×5° atmospheric model by J. Perlwitz (personal communication). In a 50-year control run Perlwitz finds that the interannual variability of seasonal mean temperature in the stratosphere maximizes in the region of the subpolar jet streams at realistic values, but the model produces only six sudden stratospheric warmings (SSWs) in 50 years, compared with about one every two years in the real world. The coarse resolution Russell ocean model has realistic overturning rates and inter-ocean transports (Sun and Bleck, 2006), but tropical SST has less east-west contrast than observed and the model yields only slight El Nino-like variability (Fig. 17, Efficacy , 2005). Also the Southern Ocean is too well-mixed near Antarctica (Liu et al., 2003), deep water production in the North Atlantic Ocean does not go deep enough, and some deep-water formation occurs in the Sea of Okhotsk region, probably because of unrealistically small freshwater input there in the model III version of modelE. Global sea ice cover is realistic, but this is achieved with too much sea ice in the Northern Hemisphere and too little sea ice in the Southern Hemisphere, and the seasonal cycle of sea ice is too damped with too much ice remaining in the Arctic summer, which may affect the nature and distribution of sea ice climate feedbacks. Despite these model limitations, in IPCC model inter-comparisons the model used for the simulations reported here, i.e, modelE with the Russell ocean, fares about as well as the typical global model in the verisimilitude of its climatology. Comparisons so far include the ocean’s thermohaline circulation (Sun and Bleck, 2006), the ocean’s heat uptake (Forest et al., 2006), the atmosphere’s annular variability and response to forcings (Miller et al., 2006), and radiative forcing calculations (Collins et al., 2006). The ability of the GISS model to match climatology, compared with other models, varies from being better than average on some fields (radiation quantities, upper tropospheric temperature) to poorer than average on others (stationary wave activity, sea level pressure). Dave Fallschirmsport Marl