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![]() "who cares?" wrote in message ... In article , rich wrote: Well of course, the best is to use an AOA vane, like the jets use. The biggest problem is where the jets conveniently mount it on the side of the fuselage, on most singles, that's right in the prop blast, rendering it useless. If you could find someplace to mount it outside of the prop blast, then it would work great. But finding that place...... I would like to see a vain mounted on each wingtip with two indicators on the glareshield. I'd like to see how much difference there is in AA from one side to the other during steep turns, slow turns, and less than perfect rudder work. Sounds like an interesting idea. Encoding the position of the vane would be needed. One way might be to use minature shaft angle optical encoders ( I tend to think digitally as opposed to analog) . I've seen prices as low as $20 each. Put one on each wing tip mounted vane and as Jim says the rest is easy. (If you know some good electronic tech). If you know the AoA for stall, the output of the encoder could be compared to a preset number and an alarm into the head set could easily be produced digitally. I've used a combination of a modification of one of Jim's circuits produced for Kitplanes along with some additional digital circuitry for a High/Low helicopter rotor speed alarm and it works great. __________ Information from ESET NOD32 Antivirus, version of virus signature database 4068 (20090512) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com |
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Stuart Fields wrote:
"who cares?" wrote in message ... In article , rich wrote: Well of course, the best is to use an AOA vane, like the jets use. The biggest problem is where the jets conveniently mount it on the side of the fuselage, on most singles, that's right in the prop blast, rendering it useless. If you could find someplace to mount it outside of the prop blast, then it would work great. But finding that place...... I would like to see a vain mounted on each wingtip with two indicators on the glareshield. I'd like to see how much difference there is in AA from one side to the other during steep turns, slow turns, and less than perfect rudder work. Sounds like an interesting idea. Encoding the position of the vane would be needed. One way might be to use minature shaft angle optical encoders ( I tend to think digitally as opposed to analog) . I've seen prices as low as $20 each. Put one on each wing tip mounted vane and as Jim says the rest is easy. (If you know some good electronic tech). If you know the AoA for stall, the output of the encoder could be compared to a preset number and an alarm into the head set could easily be produced digitally. I've used a combination of a modification of one of Jim's circuits produced for Kitplanes along with some additional digital circuitry for a High/Low helicopter rotor speed alarm and it works great. Good idea, you can use a DIP switch (do they still call them that?) to set your alarm point. Dan, U.S. Air Force, retired |
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