haadihiimailija

I have been visiting the drop zone several years around thanksgiving. In the past it has been a great place to skydive when TK used to organize things. The last two years have been a disappointment considering it was the best place to do a skydive vacation during our cold and dark winters in northern Europe. Things that I consider that could be improved to make Skydive City great again. The packing area could be cleaner: There are some spots where sand is transferred inside the packing area when jumpers walk back from the landing-area. That could solved by covering the lose soil whit something like old carpets, tiles ect. More sand in the packing area than in many desert dropzones. Information about upcoming events on the calendar on their web page: last year i brought my night jump equipment whit me because the calendar had the mention of night jumps. Had my 1.2 kg lights whit me but it was not organised. This year there was no mention in the calendar but there was night jumps on two occasions. And there could be more light on the landing. There used to be one person cooking in the kitchen, the coffee and food served was good. Now there are three people in the kitchen. => Prices are double an the quality is quite poor. Why? Jump ticket prices have increased and are currently 26$ not the 25$ stated above or the 21$ that it used to be. I do not mind the price but would appreciate clean packing space and free organizing. There are less organizers that there used to be, and the free organizing does not work the way it used to. And some of the local jumpers that I used to jump whit are less active or gone, and they are kind of disappointed on how things are. The last couple of visits there has been less loads going up and more space in the packing area. If you consider renting a trailer the ones that we have used had some mold and smell issues and could have been cleaner. I still consider this drop-zone one of the best places to skydive during winter time considering the overall picture, and it could be on the top whit some improvements.

Still working on It.

Got mail from Dualsky and there is on special order available a GA6000 280kv whit 8mm shaft => 15960RPM whit 14S lipo. Static Pitch Speed : 226.7mph Appx. Level Flight Speed (for RC plane): 272mph Prop Diameter : 10.1 in Prop Pitch : 15 in calculated whit air density of 4000 meters (13123 feet) Prop's Absorbed Power 2 blade :2495.4W Prop's Absorbed Power 5 blade :5193.8W In theory the system can be adjusted to wing suit speeds by changing these parameters: Propeller Pitch and number of blades: VARIOPROP 12C adjustable upward gradient from 4,0'' (102 mm) to ca 15'' (381 mm) blades 2-5 RPM 10s-14s (13160-15960rpm) I`m getting totally exited continuous 12000W/14.5Kg of Thrust

Hmm Starting to build the harness today. I did e-mail manufacturer about the motors and they said it is fine to run them on a higher RPM if the load is OK. Thought about landing in water.. a water tight main power and a water tight fuse for all lipo batteries. http://www.rchobby-avenues.co.uk/Hifei-Swordfish-Pro-300A-ESC-for-RC-Boat

You can upgrade the system: Typhoon HET EDF 800-73 Motor 50mm 590Kv and: https://www.turbines-rc.com/en/50mm-brushless-motors/1425-hacker-e60-l-1y-motor-50mm-600kv.html Propeller: https://www.verticalhobby.com/kauppa/en/propellerblade-101-lh-p-637.html diameter 10.1IN/25.7cm run propeller at its maximal RPM 1650 Prop tip speed 0.652 MACH Prop's maximum Absorbed Power at 4000 meters 5742.8 watts => the motors listed above => going to heat and melt or something if that load is used. In this concept you could change the number of blades and the Prop Pitch according to planed speed and wanted motor load. Propeller estimated maximal flight speed 281mph, Static Pitch Speed :234.4mph In theory you could run the motor at 16500rpm and make 5400gram push for one, 4xmotor = 21,6 kg of pusch whit optimal adjustments. In theory if the motors dont heat/good cooling system: whit 9.8kg of lipo batteries you could run it at maximum power at 16500rpm aprox 18000w around 50minutes. If anyone finds an motor whit 10000W at 16500rpm or a similar one that would make it possible to run the propeller at maximum thrust at 4000m 5765gram, 1500m 7918 gram x4= 31,67Kg of thrust in theory. I`m still going whit the Cheaper motors GT4030/06 cant afford: (920€ extra for better motors?) maybe in the future.

Boots? Maybe not... => pilot chute in propeller nicht gut. I´w been thinking about RC planes traveling at high speeds and how they are gaining their speed: Made some calculations and figured that you could put a high pitch five blade propeller under your wing suit or even two contra-rotating propellers. One engine per propeller => fore motors EMAX GT4030/06 2000W) whit one engine you can make at 1500m 3.3 kg of thrust and at 4000m it would be. 2.4 kg of thrust. The propeller i calculated this: https://www.verticalhobby.com/kauppa/potkurinlapa-118-sg-p-3021.html whit five blades an 15 pitch. Prob diameter would be like 30cm/11.8in Calculations: http://rcplanes.000webhostapp.com/calc_thrust.htm I planed that the propellers would be behind another an that is going to reduce the maximal thrust but make it easier for the motors. Some stuff ihaw already ordered or going to order for this project: https://www.turbines-rc.com/en/heat-sink/1075-heat-sink-75mm-for-50mm-motor-and-ejets-jetfan-120-edf.html http://www.goodluckbuy.com/mystery-90a-sbec-brushless-programable-electrinic-speed-control-myh-90a.html http://www.goodluckbuy.com/emax-gt-series-420kv-outrunner-brushless-motors-type-gt4030-06-5-4kg-thrust.html http://www.madpilot.fi/gens-ace-6200mah-222v-25c-6s1p-lipo-battery-pack-p-4381.html I´m planing to strap the whole system to my chest area. Whit cut away, heat protection, shrapnel protection, dead man switch Lasse