I'm sorry, but Russian helicopters aren't gorgeous like Flankers or even Fulcrums???? the black shark would be cool with-out contra-rotating main rotors.....
Aesthetics aside the KA50 and KA52's Contra-Rotating rotors make it all worth while for them.
both the Ka50 and Mil28 use Klimov TV3-117 engines so we can use them to see the difference by looking at there specifications
Mi28N
General characteristics
Crew: 1 pilot (rear), 1 navigator/weapons operator (front)
Length: 17.91 m (58 ft 9 in)
Rotor diameter: 17.20 m (56 ft 5 in)
Height: 3.82 m (12.5 ft (150 in))
Disc area: 232.35 m² (2,501 ft²)
Empty weight: 7,890 kg (17,400 lb)
Loaded weight: 10,500 kg (23,150 lb)
Max. takeoff weight: 11,700 kg (25,800 lb)
Powerplant: 2 × Klimov TV3-117/VK-2500[41] turboshaft, 1,636 kW /1,985 kW[42] (2,194 shp / 2,700 shp) each
Performance
Maximum speed: 324 km/h (175 knots, 201 mph)
Cruise speed: 265 km/h (145 knots, 168 mph)
Range: 435 km (234 nmi, 270 mi)
Combat radius: 200 km (108 nmi, 124 mi) ; with 10 min loiter and 5% reserves
Ferry range: 1,105 km (595 nmi, 685 mi)
Service ceiling: 4,950 m (16,250 ft)
Rate of climb: 13.6 m/s (816 m/min,[39] 2,677 ft/min)
Hovering ceiling: 3,600 m (11,811 ft)
Armament
Guns: 1× chin-mounted 30 mm Shipunov 2A42 cannon with 250 rounds (±110° horizontal fire)
Hardpoints: Two pylons under each stub wing to mount bombs, rockets, missiles, and gun pods. Main armament configurations include:
16 Ataka-V anti-tank missiles and 40 S-8 rockets, Or
16 Ataka-V anti-tank missiles, and 10 S-13 rocket, Or
16 Ataka-V anti-tank missiles, and two 23 mm Gsh-23L gun pods with 250 rounds each.
Other ordnance: 9K118 Sheksna and 9A-2200 anti-tank missiles, 8 Igla-V and Vympel R-73 air-to-air missiles, 2 KMGU-2 mine dispensers
KA50
General characteristics
Crew: One
Length: 16.0 m (52 ft 6 in)
Rotor diameter: 14.5 m (47 ft 7 in)
Height: 4.93 m (16 ft 2 in)
Disc area: 330.3 m² (3,555 ft²)
Empty weight: 7,700 kg (17,000 lb)
Loaded weight: 9,800 kg (21,600 lb)
Max. takeoff weight: 10,800 kg (23,810 lb)
Powerplant: 2 × Klimov TV3-117[48] turboshaft, 1,641 kW (2,200 shp) each
Performance
Never exceed speed: 350 km/h (189 knots, 217 mph) in dive
Maximum speed: 315 km/h (170 knots, 196 mph) in level flight
Cruise speed: 270 km/h (146 knots, 168 mph)
Range: 545 km (339 miles)
Combat radius: 470 km (294 mi)
Ferry range: 1,160 km (720 mi) with 4 drop tanks
Service ceiling: 5,500 m (18,000 ft)
Rate of climb: 10 m/s (32.8 ft/s)
Disc loading: 30 kg/m² (6 lb/ft²)
Power/mass: 0.33 kW/kg (0.20 hp/lb)
Armament
Guns: 1x mobile semi-rigid 30 mm Shipunov 2A42 cannon (460 rounds total, dual feeding AP or HE-Frag)
Hardpoints: 6 with a capacity of 2,000 kg and provisions to carry combinations of:
Rockets: 80 x 80 mm S-8 rockets and 20 x 122 mm S-13 rocket,
Missiles: 2 x APU-6 Missile racks, able to accommodate a total of 12 9K121 Vikhr anti-tank missiles, Vympel R-73 (NATO: AA-11 Archer) air-to-air missiles, Kh-25 semi-active laser guided tactical air-to-ground missiles
Bombs: 4x 250 kg (550 lb) bombs or 2x 500 kg (1,100 lb) bombs,
Other: 23 mm UPK-23-250 gun pods (240 rounds each), 500 L (130 US gal) external fuel tanks. Reportedly, twin Igla light air-to-air missile launchers under each wingtip countermeasure pod (total 4 missiles).[34]
Two pods on the wingtips with flare and chaff countermeasure dispensers, 4 UV-26 dispensers each (total 512 chaff/flare cartridges in each pod)
So the Coaxial configuration gives higher max speed, ceiling, Range and Rate of Climb.
And in the Future the Russians may be able to Improve the Ka50's specs significantly if they streamline the rotor mast, install a pusher system on the tail and install improve engines and avionics.
