Hinging vs. Banging -- terminology

[Tim Wescott]

I was looking at my graphs of my airplane behavior and I pointed to a spot right after a square corner and said "look, you can see the plane banging right here".  To which comment my flying buddy replied "what's banging?"

Then I realized the horror of the situation -- I had just used a word whose meaning I wasn't sure of.  I kind of absorbed the notion that "hinging" and "banging" are the same thing.  Are they?  Are they the same for some people and not for others?  If so, are the differences regional or personal?

So -- could some experts clue me in on the difference (or not) between "hinging" and "banging"?

[Dick Pacini]

I always thought banging was when you stuffed it in the pavement.  At least, mine always sounded like that.

[Dave_Trible]

I agree with Dick.  It's always been hinging to be and never heard 'banging' used to refer to the trim issue.

Dave

Think I see a new trademark coming- 'gyro trimmed'.

[Tim Wescott]

I agree with Dick.  It's always been hinging to be and never heard 'banging' used to refer to the trim issue.

I know I got it from reading magazines from the late 70's and early 80's, probably Flying Models, but maybe Model Aviation.  "Banging in the corners" is what sticks in my mind, from either a column about trimming, or a section in a build article about trimming.

"Hinging" is, I think, the term I should use from now on.

[Paul Walker]

To me, hinging is what the airplane does. Banging is what you are doing to the plane.

[steven yampolsky]

Her's how I've interpreted things:
Banging happens when outside wing panel "slaps" down. in other words, a fancy way of saying "wing rolling"
Hinging is when a model yaws out (or inwards)

[Trostle]

When I hear somebody say something about banging the corners, I take it to mean the thing is really turning a tight corner.  It has nothing to do with wing wobble, or hinging, or mushing, or porpoising. or fish tailing out of the corner.  In the context I have heard the term used, it means turning a really tight corner.

As in:  "Orestes really banged all of his corners and they were as accurate as anything I have seen."

Keith

[Allan Perret]

Same as what Keith said.  
Banging is high degree of aggressiveness with how tight a corner is flown, and not related to any trim issue.  
While hinging is a trim problem which shows up mostly in the corners.

[Tim Wescott]

My recollection of the term matched what Steve said -- maybe it's an east coast thing?

Which is interesting, because he's interpreting "hinging" to mean "yaw", while I've always taken "hinging" to mean "roll".  Have I been wrong about that, too?

His response raises another question, though -- other than "yawing" and "rolling", is there a set of accepted terms?  Or should I just confine myself to "yaw" and "roll", in hopes of being able to just point to a dictionary if anyone wants to argue terminology with me?

[Dick Pacini]

Years ago, I used to fly with a guy who was a decent pilot but flew his corners so tight the airplane would wiggle its tail back and forth, probably considered a yaw.  It looked really strange but contest judges didn't seem to mind.

[Trostle]

I think the accepted usage when the golden arms talk about an aircraft hinging is when the outboard tip is "thrown" down or up in during the maneuvers, normally manifesting the problem more in the hard corners.  Hinging can be seen in the round maneuvers as well, but normally not as noticeable.   This is a form of roll and is usually a result of improper wing tip weight.  But rudder offset and leadout position trim problems can also be related to hinging but normally to a lesser degree than improper tip weight.

Undesirable yawing (when the tail wiggles left and right) in the maneuvers is more a result a combination of improper leadout position, improper rudder offset and/or unequal forces from incorrectly designed flaps coupled with flaps and/or elevators that may be flexing unequally.

Keith

[Bill Morell]

When I was a young man "banging" had a more different meaning and it sure wasn't about U/C airplanes...............

[Tim Wescott]

When I was a young man "banging" had a more different meaning and it sure wasn't about U/C airplanes...............

One certainly hopes.