Is a roll that big of a deal?

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And, I knew Five O's response was sarcasm and my reply above is sarcasm. I would never mess with a FiveO - he can do all that cop stuff like beat a confession out of me and stuff.
 
If you know what you're doing, is is not at all "easy" to mess up a simple barrel roll. If you don't know what you are doing, it is very easy. See the difference?



I never said it was not illegal. This is not a discussion on the legality of doing aerobatics. Its about whether its safe or not. Violating a FAR in my book is the lesser of the two evils compared to doing something unsafe.



People are acting like it's possible for the wings to just fall off out of the blue because of someone previously overstressing the plane. I'm not saying overstressing can't occur without visible signs, I'm saying unprovoked catastrophic failure can't happen unless there is visible damage.
Pardon me . . . your ignorance, along with your arrogance is showing.

Violating a FAR is by definition unsafe behavior. They are written in blood . . . don't forget that.

This is a discussion about judgment, or lack thereof.

Wacofan, why wait to smoke that killer green, you should just go ahead and do a bong hit in the middle of your sick 1g roll, the bong water won't spill, dude!
 
Wacofan, why wait to smoke that killer green, you should just go ahead and do a bong hit in the middle of your sick 1g roll, the bong water won't spill, dude!

Righteous! That old Bob Hoover video with him pouring tea in the Shrike as he is doing a barrel-roll is really dated. I can do an updated one as you sugest.
 
Don't spill the bong water!

Damn, now I'm craving crunchy cheetoes.
 
I'm late to the thread, but I just thought I'd say a thing or two. :)
I always wanted to do some aerobatics, but honestly I never thought about doing it in an airplane that's not designed/certified for it.
On my first lesson in an c-172 my instructor thought it would be pretty cool to bust few clouds and hammer head the airplane just to show me how cool he was. He was a young guy aspiring to be an Air Force pilot so I guess he was just giving himself a little bit of heads up to what's coming when he gets accepted to the ots. He was lucky enough so he got picked up later on for training in the AF national guard. Maybe the AF did all of us a huge favor by accepting him because, just as Hacker F15 said, some guys just need to get it out of the system.
There were few attempts during my flying years of other people who wanted to show me few different manouvers that went beyond normal training envelope for the aircraft which I dissaproved and never flew with those guys again. There's a place and time (and aircraft) for everything and there's no need to risk lives and property of the pilots or the people on the ground for that matter.
 
Do you have a link or something to prove otherwise? An NTSB report, maybe?

I have a ground school to teach in a bit here, but I'll get my materials data tonight for hard numbers later tonight.

Metals under normal loading will elastically deform, and return to their original state. Plastic deformation occurs at very low strains (displacements) in metals. The permeant plastic deformation is in the order of less than a thousandths of an inch per inch. Not very visible at all especially when a half of an inch of plasticly deformed metal can be catastrophic under further loading.

The other thing to consider with this is fatigue failure. As one would assume the higher the repeated load the less cycles until failure. Fatigue cracks in a spar will not be visible in the wing skins, and most likely not with the human eye and a flashlight looking into the inspection holes in the wing.
 
Are you for real??

By your twisted logic...

Your life and maybe the next person flying the plane are in danger! Property?.....umm the aiplane maybe?

If it's his airplane and he's the only one who flies it and flies in it, technically he's correct. However, his insurance company wouldn't be pleased with his antics.
 
I'm not going to jump in this arguement but I'll add my 2 cents just to help educate the many pilots that are reading this.

As someone along with RyanmickG who has lost friends and a co-worker to the very topic of discussion, YES it is a big deal. I HIGHLY recommend to not try this type of maneuver in a non-acrobatic aircraft.

That's my 2 cents, take it or leave it....
 
Don't spill the bong water!

Damn, now I'm craving crunchy cheetoes.

Hey hey hey hey!! Remember "profanity filters and you." :D

"But duuuudddeeee if you do the roll correctly it will just be 1 G & the bong water wont spill!"

Have you tried the fire cheetoes? You can't eat the whole bag in one sit like the regular cheetoes.
 
I wasn't going to say anything in the beginning, but getting to page 6 I got really annoyed. I can't add anything new to the conv, but I am one of those people who rents every once in a while, takes friends on outings and such. We all get that acrobatics in an unrated plane are unsafe and they really shouldn't be done (though Butt insists it is safe). I did work on software meant for detection of failure in materials. Those cracks can be minute, thinner than hair, many times visible only to the electronic microscope. And they can cause complete failure. And if you missed on page 2, there is a professional stunt pilot video, breaking the wings in flight (which seems to be straight and level) somewhere in Texas, because of the previously induced airframe stress. I'm sure he knew how to do the maneuver, he preflighted the plane properly, and still he died. I don't want to be the guy whose wings fall off in straight and level.

Butt, do me a favor, after H dude rolls the plane while on crack, check the plane (through a thorough preflight), then go roll it yourself (I'm sure you know how to do it properly):sarcasm:... OK, I shouldn't say that, I really don't want you or Holocene to kill yourselves. But I don't want to fly a plane after someone who thinks he's safe does stupid things in it either. And I don't want to fly in your plane when you are a pilot for some airline. No offense, but poor judgment is manifest in more ways than one.

Holocene, maybe it's just part of growing up... one day you will.
 
Can a 172 torque-roll, or is that just for airplanes that have high HP and low weight? Would a 172 simply tailslide? Either way, I'm trying it...just want to know what to expect.
 
If you know what you're doing, is is not at all "easy" to mess up a simple barrel roll. If you don't know what you are doing, it is very easy. See the difference?

Sure. What I don't see is how it relates to this argument. What we ARE talking about is an untrained pilot -- Holocene -- trying to perform the maneuver in a non-aerobatic aircraft. This is where there is a high potential for performing the maneuver incorrectly. The result of which is higher than normal aerodynamic loads and stresses, which could damage the aircraft.

I'm saying unprovoked catastrophic failure can't happen unless there is visible damage.

If by "unprovoked" you mean the aircraft is sitting on the ramp at one G and zero knots, sure. But any time the aircraft is in flight, there are forces being imparted on it that could be the proverbial straw breaking the back.

Yes, it IS possible to have structural damage severe enough that failure/breakup occurs with only "ordinary" in-flight forces being imparted -- and which does not feature damage visible during a preflight walk-around.

Still no explanation of the 'flip' maneuver, though?
 
And, I knew Five O's response was sarcasm and my reply above is sarcasm. I would never mess with a FiveO - he can do all that cop stuff like beat a confession out of me and stuff.

Hahahaha. I thought the :sarcasm: I used was as obvious as yours. Gotta go beat some confessions out of people now. :laff:
 
Sure. What I don't see is how it relates to this argument. What we ARE talking about is an untrained pilot -- Holocene -- trying to perform the maneuver in a non-aerobatic aircraft. This is where there is a high potential for performing the maneuver incorrectly. The result of which is higher than normal aerodynamic loads and stresses, which could damage the aircraft.



If by "unprovoked" you mean the aircraft is sitting on the ramp at one G and zero knots, sure. But any time the aircraft is in flight, there are forces being imparted on it that could be the proverbial straw breaking the back.

Yes, it IS possible to have structural damage severe enough that failure/breakup occurs with only "ordinary" in-flight forces being imparted -- and which does not feature damage visible during a preflight walk-around.

Still no explanation of the 'flip' maneuver, though?
this is why I love this website . . . and I have learned so much from discussions like this over the last FIVE years. (I can't believe I've been hanging out here for FIVE years)
If you are ignorant about something, you can come here and get educated, or instead just become foolish.

(If you were ignorant, and have people with far more experience share their wisdom with you, and then decide you are going to discard that wisdom in order to remain unknowledgable . . . then that is foolish)

IMHO:)

In this discussion, I have seen only facts, and uneducated opinions.
 
is their a rule that says you have to do aerobatics in the day or can you do them at night?


let me know how that works out when up is no longer up, down is now left, right is running in a circle....and its all black with a few pinpoints of light in every direction.
 
I did a flat spin today in one of our planes. You think I'm ok? The wings looked like they were flapping like a bird. That's normal right? I guess the morning crew will find out. Oh yea...Hammerheads FTW! :D

BTW- Sweet music in that video.
 
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