And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
A wing generating lift has a rotational moment forward, which is why the tail on a conventional aircraft has a moment arm DOWNWARD. Yes, Northrup had a working flying wing, but it was extremely hard to control. Like this monster, the elevator is way too close to the CG. The Wright Flyer had its elevators forward, with an upward moment arm of lift, but it too was very unstable, which is why you rarely, if ever, see a reproduction flying.
As long as the wing airfoil is negative camber (can't exactly tell from the picture)it will be aerodynamically stable. Elevators and rudders should have sufficient tail volume (area x moment arm from CG)and ailerons are on the tips. So it should be controllable.
Edgar Franklin Wittmack, 1894 — 1956, an illustrator and cover artist for many of the most popular magazines of the 1920s and 1930s https://justacarguy.blogspot.com/2021/05/edgar-franklin-wittmack-1894-1956.html
"NOT aerodynamically stable!?"
ReplyDeleteTell Jack Northrop!
No empennage, no leverage. Nothing to make the wing change attitude.
ReplyDeleteMaybe they are using wing-warp!
DeleteA wing generating lift has a rotational moment forward, which is why the tail on a conventional aircraft has a moment arm DOWNWARD. Yes, Northrup had a working flying wing, but it was extremely hard to control. Like this monster, the elevator is way too close to the CG.
DeleteThe Wright Flyer had its elevators forward, with an upward moment arm of lift, but it too was very unstable, which is why you rarely, if ever, see a reproduction flying.
Mr. Northrup and his acolytes would have a few words with you about that.
ReplyDeleteAs long as the wing airfoil is negative camber (can't exactly tell from the picture)it will be aerodynamically stable. Elevators and rudders should have sufficient tail volume (area x moment arm from CG)and ailerons are on the tips. So it should be controllable.
ReplyDeleteEdgar Franklin Wittmack, 1894 — 1956, an illustrator and cover artist for many of the most popular magazines of the 1920s and 1930s https://justacarguy.blogspot.com/2021/05/edgar-franklin-wittmack-1894-1956.html
ReplyDelete