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June 22, 2011
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OAH-82A Black Mamba WIP 9 by Venom800TT OAH-82A Black Mamba WIP 9 by Venom800TT
Another small update...
Changes:
Lowered height between rotors
Added IR jammer between the engine nacelles
New AGM-182 AAGM anti-armor missiles (derived from my AIM-182 ALRAAM)
Altered the canopy from a one piece to a two piece


Fuselage Length:
54 ft (16.46 m)

Overall Length, Rotors Turning:
55 ft (16.76 m)

Height (Gear up):
18 ft (5.5 m)

Span:
24 ft (7.3 m)

Rotor Diameter:
47.5 ft (14.48 m)

Empty Weight:
10,500 lbs (4,762.7 kg)

Max Takeoff Weight:
30,000 lbs (13,607.8 kg)

Engines:
2x Honeywell T55-L-714A turboshafts; 4,867 SHP each

Payload:
4,500 lbs (2,268 kg) of air to air and air to surface munitions

Fuel Capacity:
5,000 lbs (2,268 kg)

Maximum Speed:
300 knots (345 mph, 555 km/h)

Cruise Speed:
280 knots (322 mph, 518 km/h)

Range:
652 NM (750 miles, 1,207 km)

Weapons:
AIM-182 SRAAM
AGM-182 AAGM
19 shot APKWS II missile pods
25mm GAU-12 Equalizer Gatling gun with 1,500 rounds
150 Kw solid state laser
Add a Comment:
 
:iconericj562:
EricJ562 Featured By Owner Jun 24, 2011  Professional Digital Artist
Unless you're looking for a real high speed helo I wouldn't think you need the pusher props in the back... the Ka-50 offhand has good speed and it would cut down on weight (and balance on the rear)
Reply
:iconvenom800tt:
Venom800TT Featured By Owner Jun 25, 2011  Hobbyist General Artist
It is a high speed helo. 300 knots is only attainable via advanced compound helicopter designs such as this and the Sikorsky X2. Without the props, top speed would be limited to around 220 knots like most other coaxial or otherwise conventional helicopters. A Ka-50 would lag far, far behind OAH-82 in a race, not to mention in range as well. Helicopters with pusher props can unload the rotor, which allows the engine to work on just making the helicopter go forward instead of needing to make it stay in the air and drive it forward. This also means the engines don't need to work no where near as hard to maintain flight, since the stub wings start providing significant lift. That, and the un-loaded rotor basically spins with little power from the motors, sorta acting like a gyro-copter.
Reply
:iconericj562:
EricJ562 Featured By Owner Jun 25, 2011  Professional Digital Artist
Ahh okay gotcha
Reply
:iconxalanthas:
xalanthas Featured By Owner Jun 22, 2011  Hobbyist Traditional Artist
Dual Rotors are the best!
Reply
:iconvenom800tt:
Venom800TT Featured By Owner Jun 22, 2011  Hobbyist General Artist
Indeed!
Also happens to be one of the main reasons it will out-run any conventional helicopter, along with out-ranging one.
Reply
:iconxalanthas:
xalanthas Featured By Owner Jun 22, 2011  Hobbyist Traditional Artist
Mmmm hell yeah, and you dont have to worry about losing the tail rotor either. Probably more fuel effecient because it doesnt need the PTO driving the tail rotor, either.
Reply
:iconvenom800tt:
Venom800TT Featured By Owner Jun 22, 2011  Hobbyist General Artist
The transmission that connects the turboshafts can vary the amount amount of power split between the rotor system and tail props. Essentially, as speed is increased, power is taken from the main rotor and sent to the tail prop. Eventually, it gets to a point where very little power is being sent to the rotors (just enough to provide some lift). This is called "unloading" since you are unloading the rotor of most of the work. At that point, the aircraft is essentially a turboprop airplane. Would even fly like a plane at high speeds, due to the programming of the flight control system.
On the other hand, if say, you need to sling load something (yes, this helo can sling load cargo), the drive system can completely disengage the tail props and send all power to the rotors, increasing lifting power. Without weapons, it will lift a maximum of 14,000 lbs (6,350.3 kg).
Reply
:icondarkproxy:
DarkProxy Featured By Owner Jun 22, 2011  Hobbyist Writer
Nice work it has the same name as my Blackfoot's main missile
Reply
:iconvenom800tt:
Venom800TT Featured By Owner Jun 22, 2011  Hobbyist General Artist
lol, thanks. Name is just a coincidence though, since this helo dates back to 2009 :D
Reply
:icondarkproxy:
DarkProxy Featured By Owner Jun 22, 2011  Hobbyist Writer
It's cool man
Reply
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