![]() MBKPCWSM (pronounced "mah-book-pok-wizzum") could actually be made in Windmill, so it always faces into the breeze. Lastly, of course, the whole wind-speed meter would need to be mounted on a swivel like a real Spacing right for all those colored pie sections would be a nightmare, Sections would merge, resulting in a combined color that would makeĪnyone looking at it puke! Get the idea? Getting the angular width and Some purple kind of color would emerge, probably. Trial and error would be required and lots of it! At 5 kph, the blue pieces of pie would merge into a solid image since they are rather close together! At 10 kph, the red pieces would merge, changing the color of the disk once again. Also, the wheel would be hitched up to, or part of, a windmill in order to spin the colors around. Have you ever seen a pie-chart illustrating financial or other data? Something like that is the idea, except there would be many narrow slices of pie. OK, the idea is that you draw a series of colored pie-sections on a solid flat wheel. Now for a real flight of fancy! The MBK Pie Chart Wind Speed Meter (MBKPCWSM) -) In theory, once again, this should work to a degree. The windsock and scale would need to rotate on a bearing to remain in line with the wind direction. The spar could be pointed at one end so it indicates angle on a scale, much like the floating-flap idea. Wind-speed reading! I'm sure of it, since the principle is still used inĪ little hand-held windsock could also be constructed with a long spar down the middle to hold it out straight. Hence, you've got something toĬalibrate! In fact, despite this apparatus being very impractical toĬarry around and transport, it would actually deliver a very accurate Tube causing the two fluid levels to differ. This in turn would suck the colored fluid through the To flow through the venturi, the air pressure in the short pipe wouldĭrop markedly. Sit at the same height on both sides of the U. With no air flowing through the venturi, the fluid level would Long U shape held into the tubing, it could be partially filled with a It would have to be airtight of course! The tubing would then beĪttached to a board which would need to be vertical like a wall. A length of plastic tubing could then be joined to a In theory, a venturi could be constructed from a couple ofįunnels connected together by a very short pipe between the narrow ends You could even get fancy and construct a frame from split bamboo and then stretch thin plastic over it! Try anything to "add lightness." Say polystyrene or a light grade of balsa wood. Yet another way to achieve sensitivity would be to use a very light material for the flap. This way, it's always working with higher air-flow past the flap, making it respond more readily to changes in wind speed. This would be more important if you fly light-wind kites.Īgain, regarding sensitivity, some kind of funnel could be added to the intake of the device. Less air pressure would then be required to get a reading. To make the device more sensitive, a counterweight could be employed too, acting to partially balance out the weight of the flap. Simple! The stronger the wind, the higher the flap sits before the weight-driven torque balances out the wind's force on the flap. On the outside of the box, the axle is connected to a pointer which rotates around a scale drawn on the outside of the box. ![]() ![]() In the middle, inside the box, hangs a flap connected to an axle. A hollow box is constructed, open at two ends so the wind can blow right through. One of the ideas below is quite impractical and obviously nuts see if you can identify it -)Ī floating flap would be one of the simplest ideas for a wind-speed meter. Permanent marksĬould then be made mid-way between the colored ones, thus averaging outĭoing all this during a dead calm would be ideal, The other way, making all the marks in red. In fact, to do a really good job of it, it would be an idea toĭrive down a road in one direction using, say, a blue pencil. Might be to mark the scale in 5 kph intervals. Over here in Adelaide, South Australia, an appropriate approach Of course, to calibrate any one of these devices, it wouldīe necessary to hold it out the window of a moving car, at various The Big MBK E-book Bundle is a collection of downloads- printable PDF files which provide step-by-step instructions for many kites large and small. Want to know the most convenient way of using it all? ![]() On this site, there's more kite-making info than you can poke a stick at :-)
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |