Mike Phillips Posted May 15, 2011 Share Posted May 15, 2011 I want to programme elevator to raise or lower nose dependent on whether the nose goes downwards or upwards when flaps lowered can someone please remind me Thanks Mike Quote Link to comment Share on other sites More sharing options...
Jump Jet Posted May 15, 2011 Share Posted May 15, 2011 What radio? Quote Link to comment Share on other sites More sharing options...
Mike Phillips Posted May 15, 2011 Author Share Posted May 15, 2011 Thanks its a DX 7 i know how to programme it it just whether to set the elevator to go up or to go down Thanks for your reply Mike Quote Link to comment Share on other sites More sharing options...
Wiltshire Flyer Posted May 15, 2011 Share Posted May 15, 2011 Doesnt the nose usually rise due to the increased lift of the flaps? Quote Link to comment Share on other sites More sharing options...
Mike Phillips Posted May 15, 2011 Author Share Posted May 15, 2011 Thats what i am trying to find out . I thought ( maybe wrongly ) that long winged gliders did one thing and short winged aircraft went the opposite direction but as i have said could well be wrong so if nose rises when flaps are lowered Ill have to programme in some down elevator to compensate Thanks Mike Quote Link to comment Share on other sites More sharing options...
Jump Jet Posted May 15, 2011 Share Posted May 15, 2011 Different planes do different things. Best way is to watch what the plane does when you hit the flaps. Unless you use a delay you will notice a balloning of the plane for a few seconds so let that happen before you check if to add up or down Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted May 15, 2011 Share Posted May 15, 2011 It can go either way - depends on whether the flaps move the centre of lift forwards or backwards. Most commonly the nose goes up - but it is by no means 100% the case. Really you need to fly the model with no mix and try the flaps at height and deployment airspeed and note what happens. Then add your mix bit by bit until you have it right. BEB Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted May 15, 2011 Share Posted May 15, 2011 X posted JJ! BEB Quote Link to comment Share on other sites More sharing options...
Mike Phillips Posted May 15, 2011 Author Share Posted May 15, 2011 Ok thanks all will check when we get a flyable day! and see what happens Thanks Mike Quote Link to comment Share on other sites More sharing options...
Wiltshire Flyer Posted May 17, 2011 Share Posted May 17, 2011 Posted by Biggles' Elder Brother - Moderator on 15/05/2011 15:30:58:It can go either way - depends on whether the flaps move the centre of lift forwards or backwards. Most commonly the nose goes up - but it is by no means 100% the case. Really you need to fly the model with no mix and try the flaps at height and deployment airspeed and note what happens. Then add your mix bit by bit until you have it right. BEB Well i have learned something different today! thanks BEB Quote Link to comment Share on other sites More sharing options...
mark etherington Posted May 24, 2011 Share Posted May 24, 2011 Posted by Dorset flyer on 15/05/2011 15:22:41:Doesnt the nose usually rise due to the increased lift of the flaps? that does depend on at what speed as centre of pressure does move over the chord of the wing when speed ie air flow is increased or decreased cheers mark full size glider pilot and instructor Quote Link to comment Share on other sites More sharing options...
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