Mil Mi-28N Havoc
Designed in 1982, the Mi-28 (NATO codename "Havoc") was designed as an attack helicopter similar to the AH-64 Apache. Despite the Russian Air Force's decision to adopt the Ka-50 "Hokum," Mil continued to design and market the Mi-28, and in 2005 the Russian Air Force placed an order for 19 aircraft of the night attack version, the Mi-28N.
The Havoc features a light-weight alloy skin with titanium armor capable of resisting direct hits from 12.7mm rounds and 20mm shell fragments. The rotor is plastic, and capable of sustaining hits from 30mm rounds. The helicopter can continue to perform with the loss of one engine, and widely spaced critical components with redundancy to increase combat survivability. In case of disastrous failure, both crewmembers are equipped with parachutes, and the cockpit features doors which are jettisoned from the craft and airbags which automatically deploy to prevent the crew from running afoul of the engine nacelles.
The Havoc is armed with a trainable 30mm cannon in the chin turret, and can be equipped with 20 80mm unguided rockets or five 122mm rockets on each of four hardpoints. Alternatively, the helicopter can be armed with 23mm guns, 12.7mm guns, or 7.62mm guns, aerial bombs, grenade launchers, or incendiary tanks.
The helicopter has a crew of two. The pilot sits aft and above the gunner/navigator. The Mi-28 burns 55.8 gallons of jet fuel per hour of routine usage. A full tank of fuel and ammo (not including hardpoint ordnance) costs $3,642.
Subassemblies: Body +3, Top-and-tail rotor +2, two Stub Wings +1; three Fixed Wheels +1.
Powertrain: Two 1,839-kW Improved HP gas turbines; 3,678-kW Improved TTR drivetrain, 2,300-kWs advanced battery.
Fuel: 454 gallons jet fuel (Fire 13) in standard self-sealing tank [Body] (fire -1).
Occupancy: 2 NCS, 3 CPS.
Cargo: 0 lbs.
Armor F RL B T U
Rotors: 4/200 4/200 4/200 4/200 4/200
All Else: 4/50 4/50 4/50 4/50 4/50
30mm autocannon/2A42 [Body:F] (300 rounds SAPHE).
4,233 lbs. disposable ordnance [Stub Wings:U].
Body: Combat Helicopter Package (advanced radar detector, autopilot, dedicated targeting computer with software, digital recon camera, HUDWAC with pupil scanner, IFF, IR jammer (-2), 10x LLTV, military GPS, navigation instruments, two long-range radios with scramblers (300 miles), two smoke/decoy dischargers, two reloads (flares), 10-mile thermograph), 5-man environmental control, laser range finder, laser detector, two "ejection" seats. Stub Wings: Two hardpoints each.
Size: 55'x16'x12' Payload: 3.7 tons Lwt.: 12.7 tons
Volume: 403 cf Maint.: 6 hours Price: $16,000,000
HT: 9. HPs: 464 Body, 205 Rotors, 68 each Stub Wing, 42 each Wheel.
aSpeed: 199 aAccel: 5 aDecel: 8 aMR: 2 aSR: 2
Stall speed 0.
Body is 370 cf; rotor is 7.4 cf; stub wings are 7.4 cf, wheels are 18.5 cf. Structure is medium, expensive with fair streamlining. Rotor materials are very expensive. Body, wing and wheel armor is advanced metal; rotor armor is advanced composite. Mechanical controls. Fuel tank is standard, seal-sealing. Empty weight is 18,938 lbs. Unit cost is estimated at was $16,000,000 in 2008.
Real-world weight was used for performance calculations. Design cost was used for maintenance calculations. The real-world speed has been substituted; design aSpeed was 426 mph; this drops to 213 on one engine (which is how the helicopter is designed to operate). The crew safety features were modeled as ejection seats due to their auto-deploy nature; the crew, however, must bail out of the aircraft on their own. The chin turret was subsumed in the body volume.
The Mi-28 is not designed to accommodate passengers, but three persons can crowd into the avionics compartment from a hatch on the port side during combat rescue.
The Mi-28 was the prototype; it featured 1,434-kW engines.
The Mi-28A featured 1,636-kW engines, with a top speed of 186 mph.
From the Aerodrome for GURPS
© 2008 by Jim Antonicic