Ok, Milton, I understand your problem. Well, I think double the length would be a fairly good guess. But, what do you think of this, releasing the transport version when the turbos come out and when the first Brazilian with tanker equipment is out, release the tanker? Although it would be sad having to qwait until 2015 ...
I also have some more on the Brazilian AEW version. It appears to be fairly close to the Turbo Tracker with only the MAD boom is missing. So, that should not be too tricky to build. Both airplanes might get an EFIS cockpit as well.
I will see whether I can find out more about the conversions! Like here:
The Brazilian navy hopes to refurbish the 8 airplanes they bought to create an embarked squadron with
air tanker and
AEW planes for their small aircraft carrier, the Sau Paolo, which cannot take the Hawkeye.
And in December 2011 they placed their first related order, contracting Marsh Aerospace, an Arizona-based company specialized in refurbishing Trader airplanes for civilian and military roles. The contract is for refurbishing a first block of 4 airframes and replacing the aircraft’s original Wright R-1820-8WA powerplants with Honeywell TPE331-14GR turboprops equipped with Hartzell HC-135MA-5 five-blade propellers. Marsh will also upgrade the avionics and communication/navigation suite, but it will, most importantly,
install inflight refuelling equipment with a centreline hose and drogue system. The four airplanes are to be known as KC-2 Turbo Traders, and will be all delivered by 2015.
There is no indication of how much fuel they can carry, but the Trader with its old engines has a large fuselage which can be fitted with 9 seats or used to carry over 3500 kg of payload. As firebombers, the Trackers carry 3032 liters of Fire Retardant in the fuselage, so there is quite some space for additional fuel tanks expanding the airplane's already considerable fuel capacity.
It won't be a Voyager, of course, but it will be better than a Buddy Buddy solution, and won't 'waste' a fighter bomber in tanker role.
The contract value is 167 million dollars. Added to the purchase cost, each tanker will cost just 41.7 million dollars.
 |
Carrierborne air tanker? You bet, and for bargain price as well! |
Within the year the Brazilian navy hopes to give the go ahead to a second contract for turning at least 2 of the other airframes into embarked AEW platforms. Interestingly, the Eliradar HEW-784 and Thales Searchwater 2000 sensors viewed as prime candidates for being selected as main sensor system. The HEW-784 is used by the 4 italian Merlin AEW helicopters, while the Searchwater 2000 is used by the Sea King MK7 and is, together with Vigilance pod (APG-80 derivative radar from LM) the main competitor for the RN's future AEW solution as well.
The Trader modified for AEW role would contain the radar in a drop-down radome deploying when in flight from the bottom of the fuselage. This solution is not new for Trader/Trackers, since the original ASW variant of the Tracker used this method for deploying its search radar.
The airplane will carry 2 or 3 consoles for the radar operators, and almost certainly will be re-engined like the KC-2 Turbo Trader.
 |
And AEW solution as well. Not an Hawkeye, but a quantum leap in capability from an helicopter based solution. 25.000 feet of patrol altitude against 15.000 at most, and up to 7 hours in the air. As a plus, it is intended to use the Searchwater 2000 which the RN already uses. Again, it promises to be cheap as chips. |
The advantages of a Turbo Trader solution for AEW are very noticeable: it has a longer range, is faster, can stay in the air for longer and, very important, fly much higher than an helicopter, giving a better detection range to its radar. A Sea King MK7 can fly its surveillance patrols at 15.000 feet, but will routinely stay down at just 10.000, while a normal Trader will fly at 18.000 and a re-engined one will be able to patrol at 25.000 feet, exploiting the Searchwater's performances much better.
And if the airplane was fitted with a refueling probe, its tanker sister could expand its patrol endurance in any moment.
The Brazilian navy is very serious about its expanding and improving Navy and carrier strike capability. It has also chosen a remarkably cost-effective solution to air refuelling and AEW.
Greetings,
Seawing