ПАК ФА T-50 Russia

ПАК ФА

T-50

Russia 

Scale is really Unknown at this point, this diagram is most accurate so far, Paralays diagram is only speculation, Sukhoi will release Dimentions when they deem the time is right.

Since i had posted this article a mechanical Engineer has in his spare time Analyzed the PAK FA and made pretty accurate estimations of its Overall Statistics.

http://www.freefalcon.com/forum/showthread.php?t=17216

Length: 21 m (68.8 ft)
Span: 15.14 m (49.66 ft)
Height: 5.023 m (16.48 ft)

Dry weight (wiki): 18,500 kg (40,785 lb)
Loaded weight: 26,000 kg (57.320 lb)
Maximum takeoff weight: 37,000 kg (81.570 lb)

Thrust: 2x 175 kN (38,500 NRF each)
Full thrust: 350 kN (77,000 NSF)

Wing
Root chord: 6.81 m
Final chord: 1.64 m
The angle of the leading edge: 46.94
The angle of the trailing edge: -10.21
Aerodynamic sweep: 24.24
Area (Only wing): 35.37 m ^ 2 (380.6 ft ^ 2)
Area (wing and center section: 35.37 m ^ 2 + 46.34 m ^ 2 = 81.71 m ^ 2 (879.07 ft ^ 2)

Aerodynamic estimations:
Opening angle of the cone shock waves: 26.93 degrees from the centerline
Since the shock wave should not touch the plane, then the maximum speed is obtained:

Max max. = 1/sin (the angle of the shock wave) = 1/sin (26.93) = 2.208 M

All the conclusions from this figure (divide by .42 to get meters)

Now that PAK FA has been debated to death, Speculations are rampant, what do we really have here?. criticisms about stealth, speculations about this and that.
The Truth is we only can only go by a few screen grabs from a 2 min video and a few photographs.

What do we really know?
 (Click to Enlarge Charts)

It will be a long time till these things get figured out, even Sukhoi doesn't know top speed yet let alone other factors, we do now know what it looks like, it has working brakes and controls, It also can Fly, thats a good step for producing a modern Fighter.

Discussions from forums have brought light to many features and possibilities

it is possible to have hidden engine faces with that design, this Illustrations shows how.

B-1B Lancer Intakes

They really changed things up with the Vertical Stabs. Simular to SR-71, this probally means this thing is going to haul ass, using a 100% of the control surface to not create vortex distortions. you can see them in these 2 video frames.

Note: in this photo you can see the verticals would break their Stealthiness by a hard turn as the verticals angles break their stealth conformity.



SR-71, showing off its Vertical Stabilizers.



Weapon Bays, Here you can see 4 Weapon Bays, the 2 bumps on each side left and right of air inlets on air intakes are suppose to be the "Quick Bays"

"Quick Bays" can be seen in these photos.





LERX and Vertical Stabilizers Can be seen here During their movement, LERX is slightly raised.


Leading edge root extensions (LERX)

PAK FA Features Movable LERX, this would be more like a Stealthy Canard.

LERX are fillets or strakes, typically roughly triangular in shape, running from the leading edge of the wing root to a point near the cockpit along the fuselage. They tend to be fairly small in span, extending out less than a metre.

On a modern fighter aircraft they provide usable airflow over the wing at high angles of attack. In cruising flight the effect of the LERX is minimal. However: when the angle of attack increases, as in a dog fight, the LERX starts to generate a high-speed vortex that remains attached to the top of the wing. Due to the effects described by Bernoulli's principle the wing therefore has a low pressure zone on top, and continues to generate lift past the normal stall point. The F/A-18 Hornet has especially large examples, as does the Sukhoi Su-27. Early prototypes of the Su-27 crashed due to poorly designed LERX, causing it to freeze at angles of attack above 5 degrees. This has since been overcome. In fact, the LERX help to make possible advanced maneuvers such as the Pugachev's Cobra, the Cobra Turn and the Kulbit.

LERX can be seen pitching downward to create more lift.

Zoom in, you can see LERX,IRST in front of cocpit, some sort of Situational Awareness sensor behind the cockpit possibly a Missle warning/Detection Sensor along with other sensors and/or antennas and the 30mm cannon.

Very Hi-Res Wallpaper or Cannon fodder

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