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Title: Why is my plane not flying.. Pls help?? Post by: anuragmaurya15 on March 10, 2021, 10:09:06 PM This is my first RC build. When i launch the plane, it seems to take a hard left with its nose down eventually hitting ground.
Sent from my RMX1921 using Tapatalk Title: Re: Why is my plane not flying.. Pls help?? Post by: anuragmaurya15 on March 10, 2021, 10:12:17 PM The wings are not dihedral in this pic but i used bamboo skewers to make the wings dihedral. (https://uploads.tapatalk-cdn.com/20210310/f4d4260fc8c1bb8da65275f5933339e7.jpg)
Sent from my RMX1921 using Tapatalk Title: Re: Why is my plane not flying.. Pls help?? Post by: K K Iyer on March 10, 2021, 10:48:36 PM @anuragmaurya15,
My sympathies. But I’m reminded of a question I often ask newcomers. “If you wanted to learn how to ride a bicycle, would you start by building your own design bicycle?” Learning to fly RC, and building an own successful design are two entirely different things. Don’t mix them up. To learn to fly, there are dozens of proven models available. To learn to build, there are hundreds of designs available. Please take a look at 1. Flitetest.com 2. Outerzone.co.uk Even these two threads may help http://www.rcindia.org/kites-trains-free-flight-and-all-others/2nd-chuck-lunchbox/ http://www.rcindia.org/free-donations-and-sweepstakes/next-contest-20second-flight/ Best wishes Title: Re: Why is my plane not flying.. Pls help?? Post by: SuryaKK on March 31, 2021, 11:55:43 PM Greetings, Anurag Maurya.
From the given data I guess I can safely conclude that your propeller is spinning in the clockwise direction when viewed from the cockpit. This direction of rotation generates a gyroscopic effect which causes the nose to dip while taking a left turn (which your plane is doing automatically upon its tossing into the air). To counter this I would recommend that you provide your propeller a bit of right trust and also up thrust. Provided that your plane meets other aerodynamic factors to attain flight, this fix should do the job. :D Title: Re: Why is my plane not flying.. Pls help?? Post by: Sunilk on April 01, 2021, 09:36:33 PM Basic design rules
Title: Re: Why is my plane not flying.. Pls help?? Post by: Sunilk on April 01, 2021, 09:46:56 PM For simplicity :)
Title: Re: Why is my plane not flying.. Pls help?? Post by: sanjayrai55 on April 02, 2021, 09:45:16 AM Greetings, Anurag Maurya. From the given data I guess I can safely conclude that your propeller is spinning in the clockwise direction when viewed from the cockpit. This direction of rotation generates a gyroscopic effect which causes the nose to dip while taking a left turn (which your plane is doing automatically upon its tossing into the air). To counter this I would recommend that you provide your propeller a bit of right trust and also up thrust. Provided that your plane meets other aerodynamic factors to attain flight, this fix should do the job. :D It should rotate clockwise when viewed from the cockpit. Title: Re: Why is my plane not flying.. Pls help?? Post by: K K Iyer on April 02, 2021, 01:17:46 PM The prop used is for anti clockwise rotation when viewed from cockpit.
Pl see pic in reply #1. Title: Re: Re: Why is my plane not flying.. Pls help?? Post by: sanjayrai55 on April 02, 2021, 01:20:07 PM The prop used is for anti clockwise rotation when viewed from cockpit. Why ever?Pl see pic in reply #1. Sent from my moto g(9) power using Tapatalk Title: Re: Why is my plane not flying.. Pls help?? Post by: K K Iyer on April 02, 2021, 07:46:04 PM The prop used is for anti clockwise rotation when viewed from cockpit. Why ever?Pl see pic in reply #1. Sent from my moto g(9) power using Tapatalk No idea why. Perhaps he only had a left handed prop. It’s clear from the pic that the prop is left handed (in glow prop terms) (There are, of course, a lot of other, quite basic, issues, contributing to the model not flying...) Title: Re: Why is my plane not flying.. Pls help?? Post by: sanjayrai55 on April 02, 2021, 07:49:59 PM I think the OP really needs to follow the excellent advice in Reply #3
Sent from my moto g(9) power using Tapatalk Title: Re: Why is my plane not flying.. Pls help?? Post by: K K Iyer on April 02, 2021, 09:00:52 PM Sirji,
This was reply #3, with its wrong conclusion about the prop rotation direction! Regards Greetings, Anurag Maurya. From the given data I guess I can safely conclude that your propeller is spinning in the clockwise direction when viewed from the cockpit. This direction of rotation generates a gyroscopic effect which causes the nose to dip while taking a left turn (which your plane is doing automatically upon its tossing into the air). To counter this I would recommend that you provide your propeller a bit of right trust and also up thrust. Provided that your plane meets other aerodynamic factors to attain flight, this fix should do the job. :D Title: Re: Why is my plane not flying.. Pls help?? Post by: sanjayrai55 on April 03, 2021, 04:29:52 AM I meant the post written by you, Iyer sir!
Funnily, on my Computer, it's Reply #2, but on my phone it's Reply #3! :headscratch: |