I fly submarines, not airplanes, so banked turns are not usually an issue for me. But it seems to me that to be "level" you want the lift vector of the wings to be opposite the vector of apparent vehicle weight. So if you are in a banked (coordinated?) turn then level is not the same as horizontal. If you want a horizontal sensor you need a gyro or a video camera looking at the horizon. If you want a level sensor you need an accelerometer to sense your local apparent weight vector. Sherpa Doug > -----Original Message----- > From: Leslie Lowe [mailto:mookiha@HOTMAIL.COM] > Sent: Friday, August 24, 2001 5:39 AM > To: PICLIST@MITVMA.MIT.EDU > Subject: Re: [EE]: "Tilt-o-meter" for RC plane > > > Yeah that's a good one, I guess a further question would be > HOW TO detect > tilt during a coordinated turn? I am certain you cannot > detect a coordinated > turn with either an inclinometer or an accelerometer. I > suppose the sensors > would read zero or neutral. > > > "I predict it will be ok during non accelerating forward > flight, for which > it will be most of the time." > > > Leslie Lowe > > > >From: "James R. Cunningham" > >Reply-To: pic microcontroller discussion list > > >To: PICLIST@MITVMA.MIT.EDU > >Subject: Re: [PICLIST] [EE]: "Tilt-o-meter" for RC plane > >Date: Fri, 24 Aug 2001 01:15:42 -0700 > > > >How does the inclinometer detect a coordinated turn? > > > >Jim > > _________________________________________________________________ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu