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FlyBoy1960

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Everything posted by FlyBoy1960

  1. if the noise varies depending on frequency then it is Antenna VSWR which is at fault. Probably drop an antenna analyzer into the system and get it to plot a graph. One of the guys at our airport as this fantastic one where you connect it up, press a button and it displays a graph of the aerial VSWR across the entire aviation frequency range, expensive bit of kit but it does the job in about 30 seconds
  2. So, where can we find out more about Tori ?
  3. I see that this is painted the same colour as all of the Soar aircraft. I am wondering why it's not listed in the auction ? it has a website listed on the side http://www.spicebomb.com/ but unfortunately it doesn't seem to be anything there to find out more
  4. A quick search shows the aircraft as the same one that crashed near our airfield about five years ago and killed a young person doing the "joy flight" https://www.atsb.gov.au/publications/investigation_reports/2015/aair/ao-2015-150/ The investigation shows the aircraft as being destroyed, but it was obviously worthwhile to restore to some person
  5. I know the aircraft was an absolute disaster for everyone but to think a two cylinder two stroke engine producing 70 hp could send this along at 200 kn and get nearly 2000 ft/m climb rate at sea level, just amazing
  6. Not blaming you, just saying it doesnt make any sense. You would expect it to be at least another 1,000 fpm on top of what is written otherwise with a hang glider on the back it would only do 100 fpm, hardy an efficient launch vehicle.
  7. there must be something wrong in the specifications. It says that the aircraft is designed for Aero towing and the 80 hp engine is the minimum but the climb rate is terrible. 550 ft/m with one person. This would certainly not make a good aircraft to tow hang gliders. Perhaps it is a mistake in the specifications?
  8. There is a lovely lady in Ballarat called Louise in her Jabi contact the museum, they all know her. She is a bit of an adventurer and gets around (not in that way) Skilled pilot, as well as a lovely lady !
  9. His description it is extremely accurate and exactly how they work. In my opinion an option is meant to have a start and finish but pickles have a moving end time and a lot of people know this and can manipulate the auction. sometimes the sellers even bid to get the price up
  10. it is illegal to stick the vinyl onto the glass ! there have been multiple accidents reported where the glass has simply rotated within the instrument. These are not pressurised instruments or anything like that and only rely on a small rubber fitting to stop the glass from rotating. I remember reading an article not so long ago on a Savage CUB aircraft in the USA where the glass had rotated, not much maybe 1/10 of a turn but that was enough to cause a massive screwup and a stall spin that claimed two lives. This accident had video and commentary and you can see the glass rotating throughout the flight. It would go one way and then the other. Please don't do it because it is a stupid idea. They are easy enough to pull apart the basic ultralight ones and put the stickers on the inside of the instrument on the actual face and there are also companies that do this for you for about $80
  11. In China you get what you pay for. If you want to pay the least possible price then you get absolute crap. If you want to pay a fair and reasonable price then you can get a good product and in some cases the best product manufacturing in the world. It is not fair to say that everything that comes out of China is rubbish because this is not true, you get what you pay for ! If you know it would cost $100 dollars to make something in Australia then would you be surprised if it was $2.50 in China that it would not be the same ?
  12. more to the point I am absolutely surprised after watching the TV show how you can pick any image and drop it into Google and it will bring up everything. It can take all of the fun out of looking for aircraft that you think you have seen and are trying to remember where. Technology, soon we won't be needing typesetters working on our daily newspapers, or people delivering milk every morning
  13. This is not fair any more, let me tell you why. People are using Google image search, so all you do is right click and save your photograph. Then take the photograph and drop it into Google image search and it will bring up dozens of links and information based on the photograph. I saw this working on a TV show called Catfish on the weekend and tried it out just now. it takes all of the fun out of researching for some different aircraft photographs. https://www.google.com/search?tbs=sbi:AMhZZisf-mDt0QNBiBCGfTMhYV0KLU3_1Kj7rUBtkWxv0TTNh5sxp-LgH4snN2AFthO8MpJ7c1rNav3MZ0Ql8q3Jz6dCb3kHT0gUCoQL4NjvlB21pLw-nHkOT0xlkCnYMkq1m2KHtyiaM-EACJ2YDoH_1-hILAU-mMFFSyHYnLFBAohh_1TXmsJkgVQBvSEn3jVBORZo9niIy1iwA0anuJLdLcsKEziVv3LUSHsrDRSD6LkxHMdzidsJm3Vo26UiJsCSV_1fmArNWDhndT5MRWGKcdXHBaLGTjDA-vR7z-qOETwJ3VwIl1VvO9B398hMPsCi_1H1ttKvhGMr--J85LC_1K9ucwwMeZ9g1QFA&hl=en-AU
  14. I would share the following press release from the Gold Coast Sports Flying Club who operates out of Heck Field at Jacobs Well. As a purely recreational airfield with no outside support from council or government, any improvements to our facilities are completely funded by members. There have been many improvements over the years, but our runways have always been, let's say, pretty rough. The whole airfield was built on the waste material excavated when the government was building the M1 motorway between Brisbane and the Gold Coast. We were lucky at the time that our president organised for all of this waste material to be dumped at our airfield and levelled out raising the level approximately 2 m, because previously the area flooded just about any time there was a high tide and any rain. The runways were further improved about six months ago raising the level again and adding a stabilised base. Yesterday was a very important time where we laid asphalt to each end of the runway to eliminate/reduce propeller damage on takeoff. I must say that it was very satisfying to see these works completed yesterday, makes me a very proud club member ! Read more about it below, (60 second read with photos) https://www.gcsfc.org.au/latest-runway-improvements-january-2021/
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  15. they are investigating the same use of this phenome with new technologies for Electric power generation. no idea how they are going to use it but you could imagine some sort of wing on a cable computer controlled and going around and around producing electricity. Almost like science fiction !
  16. if you overload the wing by going past the designed lift profile you will get laminar flow separation. This is also called laminar bucket and the aircraft will not fly, it will drag its tail around the sky with a high angle of attack and it heavy enough will just sink. Pushing the stick forward does nothing except change the angle of attack slightly but it doesn't produce any more lift. Simple answer is, don't fly over the maximum takeoff weight of the aircraft. I don't know why we are even talking about this because it requires an approval from CASA each and every time you want to do this and it is only approved for things like ferry flights where you are carrying extra fuel coming over from the states ? I don't really want to sound like Capt obvious that this is such a bad idea. Just don't flly overweight !
  17. I would like to know if you have an STC approval for fitting this in your motor vehicle ! 😁 Also, it looks to me like it may have flat batteries. 🆗
  18. all of this should be in the manual for every aircraft. They are easy formulas to calculate but some manufacturers include simple tables like this for people that don't have a calculator
  19. for a start, you can fly over the aircraft maximum takeoff weight. It is there for a reason ! DUH secondly, there should be graphs in the POH which show you the different calculations for density altitude and from this you can calculate your ground roll for temperatures above standard atmosphere and the climb rate to be expected.
  20. Some people should never fly, just enjoy going for rides with people and life the dream from the other seat !
  21. The info came from the certified Virus SW model from Pipistrel
  22. okay, I have managed to get more information and this is a screenshot from the manual of an aircraft showing the difference between the glide performance when the propeller is completely stopped and the engine/propeller is at idle. The top row which is blue is the aircraft performance with the propeller and engine at idle. The bottom row is the engine and propeller stationery. As you can see the glide performance is massively better with the engine running until you get to about 70 kn where the running engine will start to deteriorate the performance due to excessive drag. I think this information form a certified aircraft manual really puts the subject to bed. All of the training that we do with the engine at idle practicing forced landings is a good part of our training but the performance is significantly different when the engine actually stops. In this aircraft's case at 52 kn airspeed the difference is more than 20% to graded performance with the engine turned off and a propeller stationary, contrary to Flat Earth people who think an engine at idle is creating more drag than a stationary propeller. In my opinion we should be teaching people precautionary landings with the engine at idle, but they must know that there will be at least 20% difference when the engine is actually stopped. Demonstrated performance reduction between an engine on and at idle, and engine off and propeller stopped. between V1 = 23 and V2 = 18.8 |V1−V2|[(V1+V2)2]×100=?|V1−V2|[(V1+V2)2]×100=? =|23−18.8|[(23+18.8)2]×100=|23−18.8|[(23+18.8)2]×100 =|4.2|[41.82]×100=|4.2|[41.82]×100 =4.220.9×100=4.220.9×100 =0.200957×100=0.200957×100 =20.0957% difference
  23. Maybe you don't really know as much as you think you do ? But its not meant as an insult, just experience with a very small aircraft segment perhaps ? The aircraft is was referencing cruises at 147 knots, stalls at 34 knots. My recollection from the guy at the airport was supported as I said in previous correspondence by a follow-up phone call last week to refreshment I memory after the original post. Anyway, I digress. This is not a pissing competition it was just an explanation about why very experienced pilots who should be able to make it back to the airfield don't, they come up short and the difference is that the performance of the aircraft with a propeller stopped is less than the performance of an aircraft with the propeller at idle speed which is what we train for and this as I was highlighting maybe the reason that so many experienced pilots get caught out and why many people think it is a good idea to occasionally go out (at altitude) and turn the engine off, propeller stopped and just get a visual outlook on the descent profile and feet per minute descent. not every aircraft is a same but at least if you know you can be prepared
  24. Hello John, This is EXACTLY what i was saying. If you practice with engine at idle its going to give you BETTER performance than with prop stopped, forget all the drag of a rotating propeller crap, that's just from people who don't understand simple physics. So, when the engine does actually stop you will get WORSE performance than with everything you practiced previously. Thank you for validating what i wrote, which i simply parrot replied here from a really experienced guy at the airfield.
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