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-   -   Chinook low flyby vid doing the rounds on Facebook...... (https://www.pprune.org/military-aviation/646437-chinook-low-flyby-vid-doing-rounds-facebook.html)

Tiger G 30th Apr 2022 08:12

Chinook low flyby vid doing the rounds on Facebook......
 
Real or fake ??


SimonPaddo 30th Apr 2022 08:16

Can you post a link?

Less Hair 30th Apr 2022 10:11

The guillotine maneuver. Can this be real with all the boxes?

typerated 30th Apr 2022 10:14

First a stealthy Blackhawk.

Now a Chinook without rotorwash ?

Thud_and_Blunder 30th Apr 2022 13:33

Simon,
Like you, I don't see Wastebook/Twatter links owing to my security settings - if you want to see what's being written about, you have to press the "quote" button in the post. When the next page opens, right-click on the URL and open it in another tab.

typerated,
I can definitely see downwash in the video - pale demarcation line along the ground between the ISOs that follows the aircraft.

What a stupid, stupid thing to do - let alone be filmed whilst doing it. Echoes of South Cerney and other tragedies.

NutLoose 30th Apr 2022 13:45

Twitter link



you can watch it on aviation sources page

https://aviationsourcenews.com/news/...t-of-soldiers/

Sue Vêtements 30th Apr 2022 14:03

All fun and games until someone loses an eye

. . . or a head

albatross 30th Apr 2022 14:10

I find it very interesting that the helicopter is in a right bank yet not turning.

Old and Horrified 30th Apr 2022 14:36

Is it my elderly eyes, or is the front rotor spinning the wrong way?

SASless 30th Apr 2022 14:48

Old....my old eyes saw the same thing but at the very end the Forward Head Blades are in correct sense and in the very final frames seem to be turning in correct sense that agrees with the blade leading edge appearance.

The video shows a not so bright bit of judgement and commonsense......there is a time and place for such a kind of flying but not as seen in the video.....In my most humble opinion.

charliegolf 30th Apr 2022 14:54


Originally Posted by Sue Vêtements (Post 11223289)
All fun and games until someone loses an eye

. . . or a head

Yes, the South Cerney wazz was a hoot.:(

CG

fdr 30th Apr 2022 15:15

Fake. the rotor blades on the front rotor are on backward. The front rotor advances on the right side, USA style, the rear rotor advances on the left side, EURO style.... The movie has the front rotor advancing on the wrong side, and that isn't looking at the blade rotation, it's looking at the blade root fitting to the blade inner chord.

The rear rotor in the video is advancing on the left side too.. looking at the root fittings, so, yeah, is fake, da. Would be entertaining to fly a tandem rotor with both rotors advancing on the same side, that is they are clashing in the mesh... opposite direction of the blades over the transmission drive tunnel. Would be fun as far as torque offset goes or yaw pedal, good for the first 0.1 of a second,

Forget about the flight dynamics that are wrong too or the mother of all dynamic rollovers. Forget about the lack of coning...

lelebebbel 30th Apr 2022 15:40

Yep rotors look identical, and even if you slow it down to 0.25 speed, clearly both spin clockwise. Can't put this down to camera frame rate issues either.

Funny that someone would go though the effort of creating this, which likely took a bit of time, without bothering to find out how a Chinook actually flies

SASless 30th Apr 2022 15:52

https://cimg6.ibsrv.net/gimg/pprune....4032297fd4.jpg
Two Chinooks left over from the VNAF, both A Models, on display by the current owners in a Museum in Saigon and one at the The Shanh combat base both have the Rotors attached wrong way around on the forward head.....but obviously are not flyable.


https://cimg3.ibsrv.net/gimg/pprune....d4b54446fd.jpg

PPRuNeUser0211 30th Apr 2022 16:12


Originally Posted by Thud_and_Blunder (Post 11223281)
Simon,


typerated,
I can definitely see downwash in the video - pale demarcation line along the ground between the ISOs that follows the aircraft.

.

I'm not going to definitely say fake or real, and I'm not going to get involved in rotor speed Vs shutter speed discussions, but on the downwash front I'd say it's highly unlikely to be real - a Chinook leaves a visible wake on a sea's surface at anything below about 100' ASL, to give some context as to how much downwash you can expect. At the heights in that video (10-15' AGL, a standard shipping container is 8ft6) then I'd expect nothing less than chaos, destruction and mayhem immediately behind that cab. There's open container doors and fod everywhere, and nothing moves. The only thing visible under the cab is some shadow, and that could have easily been edited in.

That said, to my eye, a Dutch config CH-47 and a fairly convincing model of one if it is, good eye for detail, though admittedly hard to make out with poor contrast etc.

WB627 30th Apr 2022 17:30

I'm not an expert on Chinooks, but I am a bit of an expert on containers and IMHO, they look rather large in comparison to the Chinook.

Caveat, I could be wrong :oh:


DaveReidUK 30th Apr 2022 19:02


Originally Posted by SASless (Post 11223321)
Two Chinooks left over from the VNAF, both A Models, on display by the current owners in a Museum in Saigon and one at the The Shanh combat base both have the Rotors attached wrong way around on the forward head.....but obviously are not flyable.


https://cimg3.ibsrv.net/gimg/pprune....d4b54446fd.jpg

I think the rear rotor is also the wrong way round on this one.

DuncanDoenitz 30th Apr 2022 20:11

Both rotors have incorrect rotation.

(Or they've installed the cockpit at the wrong end. Easily done; this is why we have duplicate/independent inspections).

Vessbot 30th Apr 2022 20:23

My vote is "real." A few of the comments (why isn't it turning with the bank, where is the wake) seem to be based on the video speed being real time. It's actually slowed down quite a lot.

As for the blades, we're seeing correct rotation of CCW of the front and CW of the rear when seen from above, but the camera is in that very narrow space, where we're seeing the front rotor from above, and the rear rotor from below. That aside, when looking at a poorly lit silhouette, it's easy to fall into a wrong-way spinning illusion like the spinning dancer:

Also if it was fake, it would have taken a hell of a lot of coordination for all the people to be looking/dodging at the righ time.

4468 30th Apr 2022 20:37

I agree with Vessbot. I’ve got plenty of hours on chinook and there’s absolutely nothing on that video to suggest it’s a fake. The rotors are definitely turning correctly and the camera pans too fast to allow you to view the areas that would have been affected by downwash. So I’d say that was real.

sagan 30th Apr 2022 22:08

Worth looking at the longer version as was posted previously by Nutloose.

https://aviationsourcenews.com/news/...t-of-soldiers/

Includes the camera shake/sound as the wake/ wash or rotor tip vortice hits the camera.

4468 30th Apr 2022 22:22

If I was guessing, as suggested earlier, whilst it’s not completely conclusive from the video, my guess would be that’s a Dutch D model. All of which retired at the end of last year in favour of F models.

Sue Vêtements 30th Apr 2022 23:32


Originally Posted by Vessbot (Post 11223402)
That aside, when looking at a poorly lit silhouette, it's easy to fall into a wrong-way spinning illusion like the spinning dancer: https://www.youtube.com/watch?v=2RSsoTJA6cA

I'd say that was fake - given that ballerinas generally don't have such quite spectacular breasts!

Senior Pilot 1st May 2022 03:12


Originally Posted by sagan (Post 11223430)
Worth looking at the longer version as was posted previously by Nutloose.

https://aviationsourcenews.com/news/...t-of-soldiers/

Includes the camera shake/sound as the wake/ wash or rotor tip vortice hits the camera.

When watching that clip, select 2x speed via the three dots on the bottom right. Double again may be almost true speed, but it all makes more sense when sped up 👍

minigundiplomat 1st May 2022 05:35


Originally Posted by 4468 (Post 11223434)
If I was guessing, as suggested earlier, whilst it’s not completely conclusive from the video, my guess would be that’s a Dutch D model. All of which retired at the end of last year in favour of F models.

If it was Dutch, I’d have a fair guess at the guy on the sticks……

DaveReidUK 1st May 2022 07:13


Originally Posted by lelebebbel (Post 11223316)
Yep rotors look identical, and even if you slow it down to 0.25 speed, clearly both spin clockwise. Can't put this down to camera frame rate issues either.

Funny that someone would go though the effort of creating this, which likely took a bit of time, without bothering to find out how a Chinook actually flies

Actually, it's all about frame rate.

Even a minute variation in rotor RPM between the front and back rotors could produce the effect where one or other appeared to be moving in the opposite sense to actual.

Watch any film or video of a helicopter in flight and it's very difficult to discern the direction of rotation from successive frames.

Rory57 1st May 2022 07:43


Originally Posted by DaveReidUK (Post 11223532)
Actually, it's all about frame rate.

Even a minute variation in rotor RPM between the front and back rotors

-would cause complete destruction of the aircraft!

Cornish Jack 1st May 2022 08:42

Senior Pilot - Spot on ! - it's only the slowed down frame rate which produces the visual oddities. Shown at correct speed, it is (frighteningly) realistic and demonstrates an almost unbelievable level of stupidity by a (supposedly) professional airman.

esa-aardvark 1st May 2022 08:54

In run-up to GW1 had one of those flying very low over my meadow.

typerated 1st May 2022 09:37

It has got to be real. But still has me stumped that I can see no evidence of rotorwash - no dust, litter or gear flying - bizarre

Dan Gerous 1st May 2022 10:06


Originally Posted by typerated (Post 11223592)
- no dust, litter or gear flying - bizarre

Given that it is a military site/location, they'd be keeping the area clean anyway.

I can't make out the nationality of the Chinook, but I'm thinking Dutch, as it looks a similar set up to when they have deployed to Carlisle airport in the past.

Sepp 1st May 2022 10:23


Originally Posted by Sue Vêtements (Post 11223458)
I'd say that was fake - given that ballerinas generally don't have such quite spectacular breasts!

That'll be a D model - extensively enhanced from an A :p

DaveReidUK 1st May 2022 10:56


Originally Posted by Rory57 (Post 11223538)
-would cause complete destruction of the aircraft!

You're not wrong ... :\

4468 1st May 2022 11:27

I’m no aircraft recognition expert, just an ex-chinook pilot, but on closer inspection, to my eye absolutely everything about that airframe ties in perfectly with a Dutch D model. As I said, they were retired last year.

SHOULD THAT BE THE CASE….. (I may be mistaken?) It probably wouldn’t be the best advert for the organisation involved?


If it was Dutch, I’d have a fair guess at the guy on the sticks……
In general terms, these things rarely seem to happen in isolation, they generally reflect a track record. Sometimes they demonstrate a culture. The result often being depressingly predictable.

PPRuNeUser0211 1st May 2022 14:04


Originally Posted by Dan Gerous (Post 11223606)
Given that it is a military site/location, they'd be keeping the area clean anyway.

I can't make out the nationality of the Chinook, but I'm thinking Dutch, as it looks a similar set up to when they have deployed to Carlisle airport in the past.

That was my point higher up - it isn't a clean site, there's open doors on iso's, tarps and fod all over the place, and even in the lengthened video, at 2x speed or at slowmo there's only a faint waft of wind noise in the microphone (about what I'd expect from a normal day on a windy site). I see nothing to suggest it's real from that, only evidence to the contrary, though I'd also say there's nothing that is 100%, just a balance of probability there.

DaveReidUK 1st May 2022 15:36

As far as the location is concerned, this might give a clue:

https://cimg0.ibsrv.net/gimg/pprune....8c6315e887.jpg

Hard to make out what it is - it looks a bit like a derelict Saeta, but the surrounding don't look Spanish.

Liffy 1M 1st May 2022 15:53


Originally Posted by DaveReidUK (Post 11223739)
As far as the location is concerned, this might give a clue:

https://cimg0.ibsrv.net/gimg/pprune....8c6315e887.jpg

Hard to make out what it is - it looks a bit like a derelict Saeta, but the surrounding don't look Spanish.

More like a T-33, I would say - and something liable still to be found on a NATO airfield here and there.

4468 1st May 2022 16:41


on the downwash front I'd say it's highly unlikely to be real - a Chinook leaves a visible wake on a sea's surface at anything below about 100' ASL, to give some context as to how much downwash you can expect. At the heights in that video (10-15' AGL, a standard shipping container is 8ft6) then I'd expect nothing less than chaos, destruction and mayhem immediately behind that cab. There's open container doors and fod everywhere, and nothing moves. The only thing visible under the cab is some shadow, and that could have easily been edited in.
That ‘fly past’ was flown at considerably higher speed than the slowed down video suggests. As we all know, rotor downwash trails the aircraft. The camera movement does not allow sufficient dwell time on likely areas to determine whether any downwash was present.

albatross 1st May 2022 17:13

I still say that the helicopter having considerable right bank while not turning and tracking a straight line down the taxiway causes my BS caution caption to illuminate and the warning horn to sound.

Ripton 1st May 2022 17:18


Originally Posted by DaveReidUK (Post 11223739)
As far as the location is concerned, this might give a clue:

https://cimg0.ibsrv.net/gimg/pprune....8c6315e887.jpg

Hard to make out what it is - it looks a bit like a derelict Saeta, but the surrounding don't look Spanish.

One for the Which Aerodrome thread in Aviation History and Nostalgia?


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