Su-35 crash in Komsomol'sk-na-Amure

[Force_Feedback]

My favorite movie, because of the music and that sentence

 

Read the links on the Russian forum and it seems there was a problem with the fuel system and the 117S engines did not perform the way they should, speculations that they were stuck open. But... This was a taxi test, and Russian planes don't have arresting hooks, and the runway probably has no barrier (a person described weeds growing at the edge :P), so the thing is wrecked. So.. The testing of the Su-35bm will take some years longer, yaay for Russian efficiency and funding. /sarcasm

[AlexHunter]

My favorite movie, because of the music and that sentence

 

Read the links on the Russian forum and it seems there was a problem with the fuel system and the 117S engines did not perform the way they should, speculations that they were stuck open. But... This was a taxi test, and Russian planes don't have arresting hooks, and the runway probably has no barrier (a person described weeds growing at the edge :P), so the thing is wrecked. So.. The testing of the Su-35bm will take some years longer, yaay for Russian efficiency and funding. /sarcasm

 

The problem is not with the engine problem with the Сommand Сontrol System (КСУ) program. Ores after removed to the maximum of МГ, but turnovers are not dropped. Margin of time was small, no brakes, no overlap of fuel saved is not the situation, and apparently there was no bed nets to catch the plane in such a situation. The pilot had to leave the plane.

 

http://forums.eagle.ru/showpost.php?p=680734&postcount=60

[mvsgas]

So, the Aircraft was undergoing engine testing, high speed taxi or takeoff/ aborted takeoff?

If it was on engine testing, I see how this could happen, specially with new Digital engine controls (FADEC, EEC, DEEC, etc) Considering the Russian aircraft (AFAIK, anyway) do not have a tail hook to strap the aircraft down during engine runs, it happens to us when we don't trap the jet.

http://www.f-16.net/news_article120.html

 

How do they secure Russian aircraft during engine testing? Do they tied them down?

In F-16 we use the Tail hook

, same with F-15 but other aircraft we tie them down with steel cables.

How do they stop the aircraft if brakes fail? We have the tail hook in most if not all Fighters.

[Force_Feedback]

Ah, now I've read the whole post :P

 

The FADEC of the right engine got a bug, and it was stuck on full afterburner, brakes, chutes and fuel cutoffs did not work as intended.

[Pilotasso]

bummer what a succession of failiures...

[Case]

The FADEC of the right engine got a bug, and it was stuck on full afterburner, brakes, chutes and fuel cutoffs did not work as intended.

I'd say this is exactly what test flights are for.

[4c Hajduk Veljko]

...Russian planes don't have arresting hooks, ...

Because they have capable and reliable wheel brakes and chutes.

 

...and the runway probably has no barrier (a person described weeds growing at the edge :P), ...

Probably ... Anyway, we don't know exactly what happened therefore, we don't know what would it take to prevent this accident (stop the airplane?) from happening.

[Force_Feedback]

No, but installing automatic (button triggered) barrier nets might help save the airframe, and prevent old ladies on watch duty getting a shock.

[mvsgas]

Because they have capable and reliable wheel brakes and chutes.

 

I have seen the F-16 use the tail hook in many occasions, but never because the brakes had fail nor have I ever heard of reliability problems ( not since I have work on them anyway) The barrier or tail hook is more for and emergency, for example aborted take off, where the aircraft might be going to fast for tires or brakes to be able to handle it, keep in mind also this are combat aircraft, what about battle damage? I have been there many time in LOMAC FC landing on the SU-25 and not been able to stop.

[4c Hajduk Veljko]

... where the aircraft might be going to fast for tires or brakes to be able to handle it, ...

That is exactly my point as well. I understand that every braking system has limits. It could be, and I am guessing, that Russian birds are built little more robust and don't need tail hook as much as F-15 needs them. BTW I did not know F-16's have tail hooks?

 

...keep in mind also this are combat aircraft, what about battle damage? I have been there many time in LOMAC FC landing on the SU-25 and not been able to stop.

Here, I do agree that arrestor hook might help some.

[GGTharos]

That is exactly my point as well. I understand that every braking system has limits. It could be, and I am guessing, that Russian birds are built little more robust and don't need tail hook as much as F-15 needs them. BTW I did not know F-16's have tail hooks?

 

There's nothing magical about the Russian wheel-brakes, nor anything 'more robust'. It's a simple matter of surface area and energy transfer via friction. The F-15's brakes already can't hold it in place at over 80% N1, and I doubt the flanker's will do any better. It's no surprise that they wouldn't hold an run-away engine with even more thrust.

The reason Russian birds have no arresting hooks is more likely the parachute - they can slow themselves down even in case of brake failure. The price you pay is having to reload them, and possibly FODing whoever's landing behind you.

 

Here, I do agree that arrestor hook might help some.

It is an emergency braking device, not a primary braking device. Its purpose is to stop the aircraft if for some reason the brakes malfunction of if you have no choice but to land fast (flap malfunction, possible engine fire, etc).

 

This is safety equipment in other words, and Russian runways lack such provisions. Their safety requirements are different or taken care of in different ways.

 

Magical wheel brakes aren't it, though.

[nscode]

...

How do they secure Russian aircraft during engine testing? Do they tied them down?

...

 

Yes. For static engine tests, aircraft are tied down with cables.

[mvsgas]

To =4c= Hajduk Veljko

Yeah, the F-16 has a tail hook, and as you can see in the picture I posted, it is not very big. The tie down, the metal part attached to the ground is twice the size as you can see. Many Fighter size aircraft in the US have tail hooks, from the F-100 to the F-22,

http://www.truveo.com/F22-Raptor-Kadena-AFB-landing-with-tail-hook/id/3528927115 many have this feature, even the F-117.

 

To GGTharos

It is an emergency braking device, not a primary braking device. Its purpose is to stop the aircraft if for some reason the brakes malfunction of if you have no choice but to land fast (flap malfunction, possible engine fire, etc).

 

This is safety equipment in other words, and Russian runways lack such provisions. Their safety requirements are different or taken care of in different ways.

I believe =4c= Hajduk Veljko understands it is an emergency device and I think we know most if not all Russian airports do not have any kind of barrier, still I found it weird that they have no measure for emergency stopping the aircraft, that I know of, not even a net. Chutes are a pain to reload, and I am just talking about the aircraft, they must be even harder to repack. I had to install them on F-117 and that was annoying.

 

To nscode

Thanks, I think I ask this before.

 

At any rate, has anyone read anywhere what happen? I can only find preliminary findings, when did this happen?

Edited April 29, 2009 by mvsgas

[nscode]

Here at 0:48 you can see a Croatian MiG-21 engine test:

 

 

I have longer videos of Serbian MiGs tested, but I am not allowed to upload :(

 

 

Chutes are a pain to reload, and I am just talking about the aircraft, they must be even harder to repack. I had to install them on F-117 and that was annoying.

 

There are women who do that :)

[Boberro]

There are women who do that :)

 

 

:megalol::lol:

[Pilotasso]

My ex used to pack pilot ejection shutes. While its not exactly the same thing, she liked her work alot. She was methodical and exact, something I am not.

Edited April 30, 2009 by Pilotasso

[Groove]

My ex used to pack pilot ejection shutes. While its not exactly the same thing, she liked her work alot. She was methodical and exact, something I am not.

 

Maybe you shouldn't show this reply to your boss :D

[mvsgas]

There are women who do that :)

:dontgetit::blink::P

Yep , and most tough like me that the chutes are a pain

[nscode]

I bett that its a pain for you to fold your clothes too, but for them.. ;) And they are really proud of their work. :)

[Vekkinho]

Yeah, NSCode is right! Women pack our chutes in HRZ, I had a link to this video on Croatian Airforce (HRZ) covering that!

 

Can't find the video ATM...

[sniffer]

If somebody didn't see Su-35-4:

 

 

 

More: http://photofile.name/users/sergxon/96063153/

[Vekkinho]

Ooomph, great find Sniffer!

[Boberro]

Nice pics Sniff !

[grulla]

Auch, very bads news :cry:

[gigz-on]

Thrust vectoring is still working!:)