What were the Antonov An-225's payload, range, speed and runway requirements?
In real-world aviation, the Antonov An-225 Mriya could carry up to 250 tonnes, cruise at about 800 km/h (432 kt), and reach roughly 4,000 km with a 200-tonne load or 15,400 km in maximum-fuel ferry configuration. At maximum take-off weight, its quoted take-off run was about 3,500 m, so it required a long, strong runway.
Antonov An-225 specifications at a glance
The An-225 paired a 250-tonne payload ceiling with an 800 km/h cruise speed and a 640-tonne maximum take-off mass.
| Specification | Published figure |
|---|---|
| Maximum internal payload | 250,000 kg (551,000 lb) |
| Maximum external load | About 200,000 kg (441,000 lb) |
| Maximum take-off mass | 640,000 kg (1.41 million lb) |
| Heavy-load range | About 4,000 km (2,160 nmi) with a 200-tonne payload |
| Maximum-fuel ferry range | About 15,400 km (8,315 nmi) |
| Cruise speed | About 800 km/h (432 kt or 497 mph) |
| Maximum speed | About 850 km/h (459 kt or 528 mph) |
| Take-off run at maximum weight | About 3,500 m (11,500 ft) |
| Published landing run | About 3,300 m (10,800 ft) |
How much could the An-225 actually carry?
The nominal maximum payload was 250 tonnes inside its cargo hold, while the commonly published external-load limit was about 200 tonnes. The hold was approximately 43.3 m long, 6.4 m wide and 4.4 m high, with loading through the raised nose.
Those limits did not mean that any 250-tonne object could be loaded. Floor loading, cargo dimensions, restraint points, centre of gravity and the combined aircraft, fuel and payload mass all had to remain acceptable. Loading the maximum payload and maximum fuel together would exceed the aircraft's 640-tonne maximum take-off mass.
A figure of 253.82 tonnes sometimes appears in record lists. That was a specially arranged record payload, not the routine commercial planning limit. For scale, our size and payload comparison between the An-225 and Boeing 747 shows why the Mriya occupied a different heavy-lift category.
How far could the An-225 fly with cargo?
The useful heavy-cargo range was roughly 4,000 km with a 200-tonne load, while the headline 15,400 km figure described a maximum-fuel ferry mission with little or no commercial payload.
Some specification summaries quote approximately 4,500 km as a heavy-load or maximum-payload range. These figures use different fuel, reserve and flight-profile assumptions, so they are not directly interchangeable. The practical takeaway is that very heavy payloads reduced the An-225's range to around 4,000–4,500 km and could require a refuelling stop.
Actual range also depended on wind, cruising level, diversion fuel, holding reserves and the weight of the particular cargo installation. The aircraft's published maximum range was never available while carrying its published maximum payload.
Which An-225 speed figure should sim pilots use?
Normal cruise was about 800 km/h, while approximately 850 km/h was the published maximum speed rather than a routine cruise target.
These are normally treated as true airspeed figures. Setting 432 knots indicated at high altitude would be a serious mistake because indicated and true airspeed separate substantially as air density falls. Groundspeed could also be well above or below 432 knots depending on the wind.
Did the An-225 require exactly 3,500 metres of runway?
No; 3,500 m was an approximate take-off-run figure at maximum weight, not a universal minimum runway length for every An-225 operation.
A lighter aircraft could take off in less distance. Conversely, a runway measuring exactly 3,500 m might still be unsuitable because the crew had to consider temperature, elevation, wind, slope, contamination, obstacles and the airport's declared take-off and accelerate-stop distances.
Runway length was only part of the airport assessment. The pavement had to support the aircraft's enormous mass, despite its multi-wheel undercarriage spreading the load. Runway and taxiway width, wingtip clearance, turning space, apron strength and ground-handling access could rule out an airport even when its runway appeared long enough.
How should these figures be used in a flight simulator?
Real An-225 specifications are useful reference points, but each add-on may reproduce thrust, braking, fuel burn and payload stations differently. The six-engine An-225 rendition for Microsoft Flight Simulator and our FSX and Prepar3D package with a detailed specification reference provide platform-specific implementations.
- Set payload and fuel together. Check that the resulting gross mass remains below the add-on's modelled maximum take-off mass.
- Use the correct speed type. Treat 800 km/h or 432 knots as approximate cruise true airspeed, not a target indicated airspeed.
- Leave runway margin. Do not assume a 3,500 m runway guarantees a maximum-weight departure; use the model's performance behaviour and allow for weather and airport conditions.