Wright Stuff B

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Re: Wright Stuff in Division B!!!

Post by noob » January 7th, 2009, 5:28 am

look up there... two stars!!!!!!!!!!!! :o :o :o :o :o :o :o :o

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Re: Wright Stuff in Division B!!!

Post by jander14indoor » January 7th, 2009, 2:52 pm

dinodude wrote:Does anyone have any ideas for adjusting the pitch on Ikara propellers? It seems like heating it would work, but I'm afraid I'd melt the prop blade.
There's a nice video on how to do this in the Yahoo Indoor_Construction group http://groups.yahoo.com/group/Indoor_Co ... ion/files/ but you have to join that yahoo group to see it. Basically it shows how to do what andrewwski describes and makes it a lot clearer.

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Re: Wright Stuff in Division B!!!

Post by SuperAwesomeAirplane » January 8th, 2009, 6:33 pm

Is this the main subject for Wright Stuff??????? If it is, how would you suggest would be a good body for a plane? Could just a rod work, or does it have to be complicated?

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Re: Wright Stuff in Division B!!!

Post by smartkid222 » January 8th, 2009, 6:39 pm

the fusalage is made of balsa wood and so is much of the rest of the plane. If you are asking rod-shaped then i dont think it has to be.
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Re: Wright Stuff in Division B!!!

Post by killerninja999 » January 9th, 2009, 3:17 am

He,s talking about a rod format. Weather a square or cilindrical. I would do a square shaped one. This allows you to raise your wings without a problem. You can also role a motor stick (fusalage). I am not an expert on that. If I were you I would read all the other posts. :ugeek: Does anyone have an answer to my former post on this page?

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Re: Wright Stuff in Division B!!!

Post by killerninja999 » January 9th, 2009, 3:18 am

He,s talking about a rod format. Weather a square or cilindrical. I would do a square shaped one. This allows you to raise your wings without a problem. You can also role a motor stick (fusalage). I am not an expert on that. If I were you I would read all the other posts. :ugeek: Does anyone have an answer to my former post on this page?

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Re: Wright Stuff in Division B!!!

Post by Iceman » January 9th, 2009, 9:04 am

killerninja999 wrote:hey my prop is on back order so what is a good angle for my horizontal and vertical stab. (conected). Also would it be better for me to put no angle on my stab. tip (for dihidreal efect)? What is a good design for the vertical stab.? I have 6 cm. wide and 8cm. high with no curvature. Also what would be a good adjustment system for stab. to change angle? I did have an Idea for a trip system for flaps. Thanks for the help.

Normally "vertical stab" is called rudder or if two are used at ends of stab they are called tip plates.

Do angle rudder to create turn. Its best not to use a tilted stab if possible even though this is very popular way of turning the plane.

Most people that want fast way of changing circle size do it by means of rolled fuselage and boom where connector can be twisted.
You might try a horizontal tube and post on one end of rudder or same setup on stab itself for changing only rudder/tip plate angle. This would be better than tilting stab from my experience. The problem will be making the tube post strong enough to with stand air force during flight.

It's best to built tip plates straight on stab. Then angle whole stab to outside of circle. For rudder it can be angled only but whole stab
being angled will still be better for less drag.

All rudder have curvature because there is a space between covering and other side of wood spars. This causes lift in this case to side. All ways place the covering on outside of plane's circle so it doesn't fight other points of turning.

Concerning design its better to have too large of rudder for stability sake. Angling leading spar from front.....back toward top will reduce frontal drag. Curving the same is even slightly better. Another step is to sand off the edges but be careful not to weaken whole structure too much.

On bigger note the idea is to use as little as possible from any one turning point to turn the plane. Excessive over use on only one or two places to turn the plane will create a multiple increase in drag lowering flight time. Consider all places that will turn the plane, except stab tilt.

Start with rudder/tip plate angle of 1/8 inch go into gym and adjust angle for normal size gym you will be flying in. If you get into place later that can take larger circle, need smaller or because air turbulence needs smaller circle adjust by suggested horizontal
tube. Most people that want fast way use rolled motor stick and boom that can be twisted to angle stab. Otherwise you are stuck
with circle unless something is un glued and moved. Which would mean at that late date at the contest if you move anything all your data is useless and any adjustment would likely reduce you flight time because other turning point would be out of sink.
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Re: Wright Stuff in Division B!!!

Post by bob3443 » January 9th, 2009, 1:08 pm

do they look through your flight log?
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Re: Wright Stuff in Division B!!!

Post by smartkid222 » January 9th, 2009, 1:30 pm

They check it for the requirments
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Re: Wright Stuff in Division B!!

Post by haven chuck » January 9th, 2009, 2:31 pm

At our regionals and states (PA) i don't think they read them, but they deffinately look to make sure you have everything required.
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