Vladimir79 wrote:
I don't like the idea of using turbofan aircraft for ASW. Props are more fuel efficient and cheaper to maintain. Speed is not really of essence for a patrol aircraft, loiter time is more important.
India has chosen P-8´s to replace their Tu-142, it has turbofan engines. P8 are intended to replace the old P3 Orion prop plane in US and other navies.
With speed the plane is quicker on station and can cover a larger area in less time.
Tu-142
Crew: 11–13
Length: 53.08 m (162 ft 5 in)
Wingspan: 50.00 m (167 ft 8 in)
Height: 12.12 m (39 ft 9 in)
Wing area: 311.10 m² (3,348.76 ft²)
Empty weight: 90,000 kg (198,000 lb)
Max. takeoff weight: 185,000 kg (407,848 lb)
Powerplant: 4 × Kuznetsov NK-12MP turboprops, 11,033 kW (14,795 shp) each
Performance
Maximum speed: 925 km/h (500 kt, 575 mph)
Cruise speed: 711 km/h (384 kt, 442 mph)
Combat radius: 6,500 km (3,454 nmi, 3,977 mi)
Service ceiling: 12,000 m (39,000 ft)
P8
Crew: Flight: 2; Mission: 7
Length: 129 ft 5 in (39.47 m)
Wingspan: 123 ft 6 in (37.64 m)
Height: 42 ft 1 in (12.83 m)
Empty weight: 138,300 lb (62,730 kg)
Max. takeoff weight: 189,200 lb (85,820 kg)
Powerplant: 2 × CFM56-7B turbofan, 27,000 lbf (120 kN) each
Performance
Maximum speed: 490 knots (907 km/h)
Cruise speed: 440 kn (815 km/h)
Range: 1,200 nmi (2,222 km); 4 hours on station (for anti-submarine warfare mission)
Service ceiling: 41,000 ft (12,496 m)