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Topic: Is Anything Wrong With This An-70 Photo?
Username: 747to380to787
Posted 2012-12-24 09:43:36 and read 12102 times.

Do you see anything wrong with this PIC?


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Click here for bigger photo!

Photo © Vasiliy Koba



I mean landing gears are retracted and definitely not on display pole. So why both the doors are open?

1) Is it Russian way of getting fresh air? ( I would buy this if we confirm Heater/AC was broken  )
2) Sight seeing flight?
3) Cargo ramp agent was too lazy ?
4) Some kind of test flight?





-- Did not find any thread related to pic.Moderator delete the thread if duplicate.

[Edited 2012-12-24 10:01:04]

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: mesaflyguy
Posted 2012-12-24 09:47:03 and read 12091 times.

Seeing as the aircraft is at the Antonov airport, I'd venture to say that it was some kind of test.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: aloges
Posted 2012-12-24 11:09:45 and read 11783 times.

It's a test flight for their new contract with Santa Claus. He figured that he needed a backup in case his sleigh got damaged and Antonov provided a suitable cargo aircraft with airdrop capabilities - not a year too soon, either!

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: longhauler
Posted 2012-12-24 11:13:55 and read 11762 times.

I would imagine they are testing some sort of procedure, as I cant even imagine the hydraulic pressure required to hold the doors open at any flying speed.

I wonder what procedure it would be though, as there must be some mechanism built for this. There also appears to be a step extended in place on both sides, when the door is open.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: Spacepope
Posted 2012-12-24 11:18:55 and read 11727 times.

The engine cowlings have been swapped out very recently, those doors can give a pretty good view of them in flight...

Also re the step: are those forward doors useable as jump doors?

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: 747to380to787
Posted 2012-12-24 11:38:50 and read 11630 times.

Quoting mesaflyguy (Reply 1):

Seeing as the aircraft is at the Antonov airport, I'd venture to say that it was some kind of test.


The only test I can google for Open-Door flight test is, test performed by NASA for SOFIA

www.nasa.gov/mission_pages/SOFIA/status_update_08_11_10.html

Although I came across many depressurization handling training documents and video.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: spacecadet
Posted 2012-12-24 16:35:59 and read 11178 times.

Supplemental air brakes?  

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: kanban
Posted 2012-12-24 18:21:47 and read 10706 times.

My thought was jump doors especially with the jump platform extended.. but right into the props??/

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: irshava
Posted 2012-12-24 18:39:58 and read 10518 times.

Quoting 747to380to787 (Thread starter):
Is it Russian way of getting fresh air?

Ukrainian*

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: solarflyer22
Posted 2012-12-24 18:58:34 and read 10311 times.

It's a military aircraft and is no doubt capable of dropping paratroopers. Usually you'd drop them out the back where its safer but maybe its alternate jump point.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: Spacepope
Posted 2012-12-24 19:15:07 and read 10151 times.

Quoting solarflyer22 (Reply 9):

The US transports since the C-130 have all used side drop doors, just aft of the wing.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: rfields5421
Posted 2012-12-24 19:27:18 and read 10019 times.

Quoting kanban (Reply 7):
My thought was jump doors especially with the jump platform extended.. but right into the props??/

Looking at photos of the aircraft from head on and on the ground - anyone exiting the door would be well clear of the props or even the immediate prop wash.

The props are about a 2/3 of a prop diameter from the fuselage and they are much higher than the bottom of the door.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: TWA772LR
Posted 2012-12-24 19:31:58 and read 9975 times.

Quoting rfields5421 (Reply 11):
Looking at photos of the aircraft from head on and on the ground - anyone exiting the door would be well clear of the props or even the immediate prop wash.

How about a parachute? Aren't those designed to open as soon as the trooper is out the door?

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: Acheron
Posted 2012-12-24 20:04:47 and read 9661 times.

Quoting Spacepope (Reply 4):
Also re the step: are those forward doors useable as jump doors?

Yes. A la Il-76



The purpose is to shield the troops while they jump. The C-130's have a something similar on the rear side doors.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: KC135Hydraulics
Posted 2012-12-24 20:07:53 and read 9650 times.

And on the C-17 we have air deflector panels that extend into the airflow just forward of the troop doors for paradrop operations.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: rfields5421
Posted 2012-12-24 21:01:43 and read 9239 times.

Quoting TWA772LR (Reply 12):
Aren't those designed to open as soon as the trooper is out the door?

See the photo

Though the static line will start to pull the pack releases in just a few feet, the trooper will be well clear of the aircraft before the chute deploys fully.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: Q
Posted 2012-12-24 21:25:16 and read 9053 times.

It looks like fish's gill some breathe air. LOL! Or emergency air brake. LOL!

Q

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: DIJKKIJK
Posted 2012-12-24 23:54:57 and read 8182 times.

Even 16 years after its first flight, the AN-70 is yet to find a customer.

Why don't they just scrap it or put it in a museum?

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: francoflier
Posted 2012-12-25 03:40:10 and read 6559 times.

Quoting DIJKKIJK (Reply 17):
Even 16 years after its first flight, the AN-70 is yet to find a customer.

I've always wondered what a joint venture with EADS to bring it to requirements would have given...
It would have been a chaotic collaboration, but I'm guessing the resulting aircraft could have been a very interesting product indeed, and certainly cheaper than the A400.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: Wisdom
Posted 2012-12-25 04:19:32 and read 6258 times.

The answer is para-dropping.

Go to 04:27 in the following video:
http://www.youtube.com/watch?v=9s6aZqRrfSU

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: flightsimer
Posted 2012-12-25 05:04:21 and read 5879 times.

Quoting Spacepope (Reply 10):
The US transports since the C-130 have all used side drop doors, just aft of the wing.


Actually, I believe all US transports capable of paratrooper drops have been out doors from behind the wing.

C-46, C-47, C-123, C-130, C-141, C-17

The C-123 was the first cargo plane that featured the rear cargo ramp. It required that the side doors be removed completely prior to flight for paratrooper dropping. There is an escape hatch in the floor just behind the cockpit on the main floor for use by people from the front of the plane in ditching because if you jump out the front side door, your going right into the prop.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: Spacepope
Posted 2012-12-25 08:11:39 and read 4403 times.

Quoting DIJKKIJK (Reply 17):

Even 16 years after its first flight, the AN-70 is yet to find a customer.

There are orders for 65 of them: 5 for Volga Dnepr, 60 for RuAF. This prototype just started flying again in September after a massive upgrade program (avionics to reduce crew to 4, propellers for noise: see the new engine nacelles int he photo)

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: rfields5421
Posted 2012-12-25 12:56:37 and read 3406 times.

Quoting DIJKKIJK (Reply 17):
Even 16 years after its first flight, the AN-70 is yet to find a customer.

Why don't they just scrap it or put it in a museum?

The AN-70 is another case of an aircraft appearing at the wrong time. It first flew right as the Soviet Union collapsed and the design customer - the Soviet Air Force - suddenly collapsed.

Which also put hundreds of AN-12 aircraft on the market, cheap, very, very cheap.

Given the birthing problems of the AM400, going back to make the AN-70 a potential competitor is probably a good business decision. Only time will tell.

But there are a lot of old AN-12 transports what need to be replaced by something.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: MD11Engineer
Posted 2012-12-25 13:52:42 and read 3306 times.

Quoting DIJKKIJK (Reply 17):
Even 16 years after its first flight, the AN-70 is yet to find a customer.

Why don't they just scrap it or put it in a museum?

Actually in the 1990s the Germans were interested in a joint venture with Antonov to produce a NATO compliant version of the AN-70, but the French government insisted on some old contract for what would now be the A400M and insisted that Germany would have to pay a huge fine if they would leave the project.

Jan

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: 747to380to787
Posted 2012-12-25 15:04:42 and read 3189 times.

Quoting Wisdom (Reply 19):

Good video. Explain it all.

Just curious- those door hinges must be strong and there must be some drag due to distortion of aerodynamic shape of plane. Wouldn't it make sense to have that door opens inside ? Like what SOFIA does.

[Edited 2012-12-25 15:12:11]

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: rfields5421
Posted 2012-12-25 15:34:29 and read 3247 times.

Quoting 747to380to787 (Reply 24):
Wouldn't it make sense to have that door opens inside ?

The purpose of the door opening out is to provide realtively low airflow for the exit point. Otherwise the troops would have to fight their way out the door. Since the aircraft is designed to have troops drop from the front doors and the rear ramp at the same time -air would inflow from the front doors at a rate possibly too high for the troops to get out safely.

One of the eternal problems with dropping paratroops is the need to avoid spreading the troops out over a large area. The troops need to all get out of the aircraft very quickly and at near the same time. Otherwise they will be scattered over a large area - maybe even a couple KM.

Quoting 747to380to787 (Reply 24):
there must be some drag due to distortion of aerodynamic shape of plane.

Both doors are opened at the same time so the drag is balanced. Even if it was only on one side, that would be well within the capacity of the flight controls to correct for in maintaining a straight flight path.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: 747to380to787
Posted 2012-12-25 20:37:10 and read 2979 times.

Quoting rfields5421 (Reply 25):

Thanks rfields5421.

Topic: RE: Is Anything Wrong With This An-70 Photo?
Username: FYODOR
Posted 2012-12-27 11:17:54 and read 2460 times.

Quoting francoflier (Reply 18):
and certainly cheaper than the A400.

That is an answer, mate. Who nowdays care on cheap projects?   Always think about the beneficiaries if you talk about state money, never about tax payers.  

Regards,

Fyodor


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