Sorry for your loss as I am assuming hes passed. Your grandfather was a good man I presume.

Kevin, who is your grandad? Does he have a bio on the SuperSabreSociety.com website? So sorry he is in ill health.

God bless him and a great thanks for his service.

Thanks to your grandfather for protecting America We will see him in Heaven soon

Your grandfather was a hero! F100's were great planes.

Well, I'm not an aerospace engineering student and I don't play one on TV, but I think if go back and investigate the subject a little more thoroughly, you discover that the "Saber Dance" is indeed caused by loss of lift ... that is, loss of lift at the outer part of the wing while the inner part of the wing still lifting just fine resulting in an uncorrectable nose upward pitching moment. (I think you are confusing the "Saber Dance" with the F-100's tendency to rip itself apart in the early days because of it's undersized rudder which, thanks to inertial coupling, could very quickly lead to the aircraft yawing, pitching, and rolling at high speeds to the point where the airframe became overstressed.) All swept back wings are subject to this problem unless something is done to design it out of them, such as twisting the wings so that the outer part of the wing effectively flies at a lower AoA than the inner part, doing something to force the inner part of the wing to stall before the outer part such as through the use of stall strips, or putting fences or leading edge notches or dog tooths in to generate vortices that reduce spanwise flow towards the outer part of the wing to keep the outer part flying longer. In the case of the F-100, the "Saber Dance" was effectively fixed through the addition of a small wing fence near the training edge on the later F-100 variants (IIRC the F-100C) which I think clearly shows that inertial coupling wasn't the cause of the problem as you've apparently learned in class. And OBTW, the F-86 could also "Saber Dance", but it was never fixed ... pilot simply avoided getting into an attitude where it would occur.

That's quite interesting and indeed when I do online research your statements do seem to be the case. For the sake of continuing the conversation, I'll state where I was coming from. In my dynamics and controls class we had to derive equations of motion as they pertain to aircraft. These result in equations for pitch, roll, and yaw accelerations. The curious thing about these derived equations were terms that included motion velocities about other axes multiplied by differences in moments of inertias (for the sake of an example, the coupling term for roll rate acceleration would be [(Ixx-Izz)*roll rate*yaw rate/Iyy]. This implies that the severity of inertial coupling depends on mass imbalance. In the case of the f-100, most of the mass normally found in the wings of an aircraft (ie fuel tanks) were moved to the fuselage to allow for a thinner wing profile. These coupling terms were attributed as being the reason for the sabre dance with videos of this occurrence being shown in class. There was an emphasis on this occurring at low speeds, notably on take off with pilots being told to not use any rudder or aileron on take off to avoid this from happening.

@@ethanboyle9514 > In my dynamics and controls class we > had to derive equations of motion as > they pertain to aircraft. These result > in equations for pitch, roll, and yaw a > ccelerations. The curious thing about > these derived equations were terms that > included motion velocities about other > axes multiplied by differences in moments > of inertias (for the sake of an example, > the coupling term for roll rate > acceleration would be [(Ixx-Izz)*roll > rate*yaw rate/Iyy]. I assume that the roll equation of motion you are referring to is: Roll p = Sum( L )/Ix - qr*(Iz - Iy)/Ix + (r + q*p)*Ixz/Ix You can find this equation and the others I suspect you derived in Volume II, "Flying Qualities Phase", Chapter 9, "Roll Coupling" put out by the USAF Test Pilot School at Edwards Air Force Base which can be found online. The equations are given, but not derived, but are used in the explanation of roll coupling, and while perhaps not as detailed in nature as what you have run into, is in a form that is more easily understood by non-aerodynamicists like me. The chapter starts by saying the following: "Divergence experienced during rolling maneuvers has frequently been referred to as 'inertial coupling.' This leads to a misconception of the problems involved. The divergence experienced during rolling maneuvers is complex because it involves not only inertial properties, but aerodynamic ones as well. [...] "There are numerous contributions to the roll coupling characteristics of an aircraft. Only three will be considered here: "Inertial Coupling "The Ixz Effect "Aerodynamic Coupling "These effects occur simultaneously in a complex fashion. Therefore, divergence cannot be predicted by analyzing these effects separately." I'll leave the rest as an exercise to the reader, and since the paper was put out in 1989, perhaps there's something in your course that is more relevant to the "Saber Dance" ... but I doubt it. From my poor dumb prospective, it seems obvious to me if you accept what the videos of F-100 "Saber Dances" show, then those "Dancing" F-100s invariably get stuck in a nose high attitude prior to their eventual demise, which means that the sum of the forces and moments acting on them all balance out to be essentially zero. Inertial coupling may lead to unexpected/unintended motions (eventually leading to a wing dropping into the ground finally causing terminal fireball), but given that the pilot is presumably fighting for control through out the "Dance", what is causing the aircraft to remain nose high no matter what in the first place? The obvious answer (and yes, I know that "obvious answers" are often times wrong) is that there is a (nose) upward pitching moment. So where does this moment come from? Well in a properly designed wing made up of non-zero pitching moment wing sections, the pitching moment of the wing is invariably nose down (at least in The Good Old Days before computers), hence the reason for the horizontal stabilizer, and so we are looking for something that can alter the pitching moment of the wing ... like what happens in the case of a tip stall of a wing with a swept back planform. So to me, the tip stalling explanation for the "Saber Dance" that I've heard (I can't remember where I first heard of it) makes intuitive sense while inertial coupling simply does not.

I am not an aerospace engineer, nor do I pretend to be one on TV, but I did stay at a Holiday Inn Express last night...

@@lewiscole5193 you sir are correct, and I was a crew chief on them for 8 years and 68 69 inTuy Hoa, then became a rocket engineer with a BS in Aerospace Engr in 76. It was a maintenance nightmare compared to Voodoos we got after Nam

And thank you for serving.

Yes, thank you for your service. And welcome home.

fast movers. 70-71

Thank you for your service

welcome home...

It's actually not. They called it a snout but, the real term is nose.

"the snoot droop" - Concorde

@mrMankx “It had a droop snoot...the snoot drooped”

He boop with his snoot

@@potatojuice5124 kzfaq.info/get/bejne/j9uVl7R3rZ7bin0.html

The F-100D is literally the worst jet ever it’s 10.0 so it always gets uptiered to 10.3 and it always just gets clapped so hard because it’s a slow, fat, flying piece of useless tin.

@@rosstheboss1014 French and Chinese ones are 9.7 and just better because no uptiers.

Friso S I know, I have the Chinese one and it’s so good. The lack of any uptiers whatsoever automatically makes you top dog every game, you are always the fastest and the most heavily armed jet of the BR facing jets as low as the lowly MiG-15bis at 8.7, the only counter to it in the Hunter FGA 9 and the Lightning F. 6

@@rosstheboss1014 The Chinese A version also turns a lot better then the fat D fighter bomber version, and it's has also AIM-9E's?

Friso S No it doesn’t get AiM-9E’s, only AiM-9B’s, but I prefer having that and only getting downtiered than having slightly better missiles but much stronger and tougher opponents at 10.3

How were the m14 compared to the m16 in experience sir

Dust-Off boys saved my dads life in '68, not because of enemy fire, but because his patrol had gotten lost in a rainstorm, spent 3 days in the wilderness, looking for friendlies before a couple UH-1s appeared and threw down some supplies including a map, compass, food and medical equipment until they could get to a clearing several hours later, where the same choppers could pick them up

@@LoneWolf051 hey man what you think of the army going 6.8

@@jbone9900 I like the 6.8 personally, good intermediate between 5.56 and 7.62x39

You were stationed in Long Bien? What side were you fighting for? "Vietnam era veteran"? Wait. Did you work on refrigerators too?

I flew 6 years active duty and 15 years ANG. Like many other USAF types, I flew all three of the fighters featured in this mini-documentary, the F-100, F-105 and F-4 in the '70s and '80s. The Thud was and still is my favorite airplane. And it is by far the most beautiful. But I have known pilots who also had flown all three who held that the Hun was the most beautiful. A few of these had also flown the F-86 Sabre.

@@daveriley6310 thank you sir

It's a nice plane yes, very well balanced design. F-86 had something more elegant to my eyes, but well, I like both.

Ah yes, bunker hill, formerly a Naval Air Station. Then an Air Force base for B-58 hustler supersonic bombers, Now Grissom air reserve base housing a KC-135 tanker squadron.

Ya my dad worked at DeHavilland in England when the Vampire was being tested.

Super saber is air doggo confirmed

Glad I wasn't the only one who caught that.

I had to pause the video and go "wait, what?"

never seen a more Reddit comment in my life

@@dnxmp this doggo speak is just annoying

And not the 105?

More like the F-105 thud, she did nearly 70% of all sorties in Rolling Thunder along with being a wild weasel plane too.

Yes, the Thud was the workhorse! Had the great pleasure and honor of knowing COL Konrad Trautman, 105 pilot, who survived years in the Hanoi Hilton. A fierce patriot and true gentleman, he had a quiet strength and presence that was almost other-worldly!❤RIP

My grandfather got gay with your grandfather. I'm so sorry you had to find out like this.

should be 9.7

@@josegutierrez3749 yeah I feel you bro

My GF fought in WW1, so neener neener

Your Grandfather was cool! You should feel proud.

Incredibles. whe I was a kid back in late 60s our family would attend the Blue Angels air show at NAS Alameda CA. F4's in formation would make low level supersonic passes and it was awesome. All you saw were like quick snapshots of these jets coming at you and over and gone and BOOM!

Cannon was our last base when my dad retired. The EF-111 were retired too. F-16s moved in. With those high empty plains, the roar of the jets traveled a long way. I remember the F-100 static display out there too. Man, that base was awful.

@@beyond_the_infinite2098 They weren’t supersonic. Probably only about 480KTAS. It just seemed supersonic because you didn’t know any better. Intentional supersonic flight in populated areas is prohibited. Even for Blue Angels and Thunderbirds.

Funny, use to hear the booms occasionally as a kid in the late 60’s and early ‘70s on our central Tx farm. Always remember the antique china cabinet in my grandparents house rattle as a result❤

You might like the Concord’s droop snoop then

No one: thinks this kind of comment is funny...

@@T_bone yo stfu other people can have their own opinion on what is funny. Just because your opinion is different doesn't mean it's bad. Also this comment is like 4 months old.

@Yuck Foutube to be fair, we wernt trying to

Was Jane behind the sights?

Me, 68, 69, C and F models, at Tuy Hoa

@@robertstack2144 i was there about six months, they were closing down ops. and sent the planes to other bases and me to Danang to finish my tour.

@@polycarphunter2257 how was it at Da Nang.? I was only there a couple of nights at Camp Zama, and I hated that place

@@robertstack2144 Tuy Hoa was a lot better. charlie didn't mess with us much. only hit once in six months. right on the beach. Danang was huge, Air Force on one side of the runway, and Marines on the other side. we got hit with rockets a couple times a week. bigger pucker factor.

I remember my father building a plastic model of an F-100 for me when I was a kid. Years later when I was in the Air National Guard I got to ride in one.

@@joevignolor4u949 That is kick ass!

@@TheDing1701 Actually I got two rides in an F-100. So it was double kick ass. Both were air-to-air combat missions dogfighting with other aircraft.

Been to an air show there also

That confused me too, Maybe it was knocked out of combat. Couldn't fight but it still flew back to base.

I got confused over that, the narration makes no sense. I suppose it is a mistake done when doing this script which is probably based on several sources.

USAF never accepted that they lost any aircraft in air combat only to flak and SAM's.

Would be interesting to see a history of Luke and the aircraft flown from there. Lots of 104s, speaking of the Century Series.

@@MakeMeThinkAgain we'd hear sonic booms nearly every day coming from out there, usually doubles. Bombing range in SW AZ Gila Bend area, probably heard a lot of noise too. 💣

Aaaaaaaaand....

@@superwout it means, "You Gotta Be Shitting Me" This was the reaction by most Wild Weasel pilots when they learned of the extremely dangerous nature of their mission.

@@briancross7835 hilarious, thank you

One of my favorite jets of all time

I totally believe this - but I bet they had an alternate 'motto' to explain it to the brass, lol!

i was with the 416th in 1970.

@Anonymous Anonymous lol

You need to speed up.

I wonder if he answers the phone like that.

@@DavidALovingMPF102 helloI'llhavetwolargepizzaswith pepperoniandextracheesethatsallbye

@@JP12345 OMG that kind of comments always make me explode in laughs 😂😂😂😂😂

*cry in F-100 suffering*

Agree. I was surprised to hear that about the F-100, but then I was Naval Air so would have guessed the F-4 or the A-4 Skyhawk.

One did get a Mig

@@robertstack2144 the US airforce doesn’t agree only a probable which was never verified and still isn’t. So no kills

@@Rob-vv5yn maybe you are correct, or possibly it hasn't crashed yet. The F-100C did shoot an airplane down not in a dogfight

@@robertstack2144 interesting story please explain always interested in history

@@Rob-vv5yn There is a YTvideo about a 100 with a probable mig kill. You know that. The 100 did shoot down a jet bomber. This was not fiction and it did it with an AIM-9J missile. It was an accident. I remember when in Tuy Hoa Vietnam at the NCO club after a few too many two ANG crew chiefs got into a "your squadron can't do this, oh yeah, and you can't top this," where one of us blurted out "well at least we never shot down one of our own B-52's," which led to a brawl inside the club. The fellow squadron's pilot who I helped strap in the airplane i was crewing that flight one day, was flying the 100. He wore a metal flake blue painted helmet. His last name was like Van Synco as I can recall. Later after returning to the USA, and still crewing 100s or 101's he and thee other jocks were in the movie SKYJACKED, him wearing the blue helmet. I don't know how they got away with it.. A big red Russian Star is painted on the ctr fuselage of each 100 and you'll notice a yellow roadrunner on top of each 100's vertical fin designating the 188th NMANG

I found that the custom 0.8 speed is perfect!

I agree, he sounds normal then.

The "Sabre Dance"

HighFlyer .... all of the century series aircraft had issues

@@Idahoguy10157 F-100 had 889 lost in accidents in USAF service out of 2294 built with the 193 Vietnam war combat losses that's 1082 lost over 50% of those used by the USAF since 257 new built were exported to allies. That's a higher accident loss rate than F-104's had in German service. Not that surprising for the first mass produced supersonic aircraft but still not something that you would want to fly back in the 50's or 60's.

Ushio01 .... back in 1974 I had a friend who’s stepfather was recently retired from the USAF. He had been an F-100 pilot

@@Idahoguy10157 one of my earliest up close encounters with a fighter plane was with an F-100. There's one on a stick at a local park. I was mesmerized by it and wanted to know how it worked and what it took to operate it.