Brodhead Pietenpol Association

Original Posted By: TomTravis(at)aol.com
I think it's been mentioned before, but thought I would share a great site I founda while back.I'm checking some wing angles/rises/slopes/etc and needed to know the exact anglefor a 1" rise at the wingtip....and this site makes quick work of it.Go here: http://www.engineersedge.com/calculator ... n_menu.htm and there are a bunch of right triangle formulaes that make the numbers quick and easy (unless you have a Smoley's...and if you know what THAT is, you're an older antique than myself!)I think I once heard someone say they put in about 1 1/2 degrees of dihedral sothey would have an inch or so at the wingtip....NOT. 1 1/2 degrees at (approx)161" gives a bit more than 4" of rise....ok, it doesn't really matter at thispoint, but it sure is nice to have a quick and easy check of the numbers!Jim in Plano________________________________________________________________________________

Original Posted By: Larry Nelson
Subject: Re: Pietenpol-List: Trig help...Jim,All those angles and measurements can be done with the Sine, Cosine, & Tangent formulas. Pretty simple stuff once you get the hang of it. I'll haveto admit, though, having a program that calculates it all for you is much easier!-WayneIn a message dated 7/31/2004 9:38:31 PM Central Daylight Time, jim_markle(at)mindspring.com writes:I think it's been mentioned before, but thought I would share a great site I found a while back.I'm checking some wing angles/rises/slopes/etc and needed to know the exact angle for a 1" rise at the wingtip....and this site makes quick work of it.Go here: _http://www.engineersedge.com/calculators/trian ... _menu.htm_ (http://www.engineersedge.com/calculator ... n_menu.htm) and there are a bunch of right triangle formulaes that make the numbers quick and easy (unless you have a Smoley's...and if you know what THAT is, you're anolder antique than myself!)I think I once heard someone say they put in about 1 1/2 degrees of dihedral so they would have an inch or so at the wingtip....NOT. 1 1/2 degrees at (approx) 161" gives a bit more than 4" of rise....ok, it doesn't really matterat this point, but it sure is nice to have a quick and easy check of the numbers!Jim in Plano________________________________________________________________________________Date: Sun, 1 Aug 2004 06:40:22 -0700 (PDT)

Original Posted By: Jim Markle
Or.... figure that 1" rise in 57" equals 1 degree -- this works up to 10degrees (10 " rise in 57") with 1/2% error (you would need to add a bit lessthan a 1/16 (.05") to your 10" to get closer to 10 degrees).Mike C.Pretty Prairie, KS ----- Original Message -----

Original Posted By: N925WB1(at)aol.com
Hi,I have been using some trig for working out angles, etc., all along. I find thatan 'el cheapo' scientifc calculator works great. ( Saw one advertised recentlyfor $6.99.) Makes it easy to work both ways, i.e find the angle or findthe rise/run measurements from the angle.Lou Larsen, (back in steamy Florida after the comfortable Brodhead weather.) ----- Original Message -----

Original Posted By: Don Morris