James, What's an ">>aeronauyical engineer"?
(Sorry, couldn't resist the typo.) ;<) Dick Iennaco -------------- Original message from JAMES FERRIS <mij...@juno.com>: -------------- > Sure! a big man can fly. The thing you need to look at is the wing > loading. I don't think the Rand company is correct for the wing loading > so lets use Larry's airplane even though he says theres no way. gross > wt.=1100 lb, S, wing area= 77sq.ft. ( he has clipped wings so its less > the the 80 sq.ft. of Rand ) Now, the wing loading of Larry's plane is > W/S = 1100/77 = 14.28 lb/sq.ft. now, you weigh 60 lb more than Larry and > you want to carry a small passanger like 100lb. so your gross weight will > be 1100+60+100 = 1260lb so you want to keep the same wing loading, so > wing area should be S=1260/14.03 = 88 sq. ft. Now since the center > section of the wing chord is 4ft.,you can get this increase in wing area > (11sq. ft.) by increasing the center section by 11/4 =2.8ft. by adding > 1.4 ft. to each side of the center section of the wing. This will also > increase the Aspect Ratio of the wing which will increase the climb > rate. This will change the structure slightly but the spar caps of the > center section can be increased to beef up the structure to componinsate > for the extra bending moment. > Happy flying > Jim > PS I'm an aeronauyical engineer. > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html
