The C-130J is a 4-engined turboprop not a twin-egined jet like the MTA which outclasses the C-130J in several depts.,including speed,higher service clg,passr. capacity and has a crew of only 3 compared to 5 for the C-130J. However,as said before,the C-130J is also needed for other duties,esp. special ops,and buying more C-130Js which can land on small airstrips in the Himalayas/mountains is a better option than ultra-expensive C-17s which are global strat. transports for the US/NATO's expeditionary warfare requirements. Special variamnts for tankers,AEW aircraft,ISTAR,etc. would be much better served using the MTA rather than the much slower C-130.
MTA:
General characteristics
Crew: 3
Capacity: 70 to 150 passengers
Payload: 20,000 kilograms (44,000 lb)
Length: 37.7 m (123 ft 8 in)
Wingspan: 35.5 m (116 ft 6 in)
Height: 12.95 m (42 ft 6 in)
Max takeoff weight: 68,000 kg (149,914 lb)
Fuel capacity: 25,000 kilograms (55,000 lb)
Powerplant: 2 × Aviadvigatel PD-14M[10] turbofan engines, 152.98 kN (34,392 lbf) thrust each
Performance
Maximum speed: 870 km/h (541 mph; 470 kn)
Cruising speed: 810 km/h (503 mph; 437 kn)
Range:
3,250[11] km (2,019 mi; 1,755 nmi) with payload of 20,000 kilograms (44,000 lb)
Ferry range: 7,300 km (4,536 mi; 3,942 nmi)
Service ceiling: 13,100 m (42,979 ft)
Takeoff run: 1,050 metres (3,440 ft)
Landing run: 1,050 metres (3,440 ft)
C-130J:
General characteristics
Crew: five (two pilots, navigator, flight engineer and loadmaster)
Capacity:
C-130E/H/J cargo hold: length, 40 feet (12.31 meters); width, 119 inches (3.12 meters); height, 9 feet (2.74 meters). Rear ramp: length, 123 inches (3.12 meters); width, 119 inches (3.02 meters)
C-130J-30 cargo hold: length, 55 feet (16.9 meters); width, 119 inches (3.12 meters); height, 9 feet (2.74 meters). Rear ramp: length, 123 inches (3.12 meters); width, 119 inches (3.02 meters)
92 passengers or
64 airborne troops or
74 litter patients with 5 medical crew or
6 pallets or
2–3 Humvees or
2 M113 armored personnel carriers
Payload: 45,000 lb (20,400 kg)
Length: 97 ft 9 in (29.8 m)
Wingspan: 132 ft 7 in (40.4 m)
Height: 38 ft 3 in (11.6 m)
Wing area: 1,745 ft² (162.1 m²)
Empty weight: 75,800 lb (34,400 kg)
Useful load: 72,000 lb (33,000 kg)
Max. takeoff weight: 155,000 lb (70,300 kg)
Powerplant: 4 × Allison T56-A-15 turboprops, 4,590 shp (3,430 kW) each
Propellers: 4 propellers Propeller diameter: 13.5 ft (4.1 m)
Performance
Maximum speed: 320 knots (366 mph, 592 km/h) at 20,000 ft (6,060 m)
Cruise speed: 292 kts (336 mph, 540 km/h)
Range: 2,050 nmi (2,360 mi,
3,800 km)
Service ceiling: 33,000 ft (10,060 m) empty;[73]
23,000 ft (7,077 m) with 42,000 pounds (19,090 kilograms) payload ()
Rate of climb: 1,830 ft/min(9.3 m/s)
PS:
The MTA has been envisaged right from the start as a dual role aircraft not just a mil transport.The C-130J on the other hand is a purely mil transport.
The governments of Russia and India agreed to produce the aircraft for their respective armed forces and for friendly third-party countries, and to develop a civilian variant of the MTA in the form of a 100-seater passenger airplane, for which Hindustan Aeronautics Ltd (HAL) – owned by the Indian government – will be the lead partner and principal integrator. The Indian portion of the MTA's serial production would take place at HAL's Transport Aircraft Division in Kanpur.[5