I SAW the C-27J take off at Avalon (before I left) and it took off in an AWFULLY short length of runway. Sure it was empty but it was FAR shorter than RAAF's C-130J took off empty in a "combat launch".
I completely agree that an empty C-27J can take off in a shorter distance than an empty C-130J. Also with both aircraft carrying their max cargo load the C-27J will still take off in a shorter distance. However the C-27J's maximum cargo load is half that of a C-130J. Put a full load into a C-27J and a half load into a C-130J and the takeoff performance wont be that much better. Certainly not enough to warrant its introduction.
The running costs will be cheaper, as will the up front acquisition costs.".
Even though the C-27J shares alot in common with the C-130 it would most likely have a seperate servicing area and they would have to be trained up etc. So thats another cost that makes the C-130J not look too bad. Not to mention you have to have more C-27J's to do the work of the C-130J. So even if its cheaper to operate per aircraft it evens out.
Also if you look at outright load capbility, you would need two C-27J's to match one C-130J. The C-27J wont be half the price.
Instead of buying 14 C-27J's you would only need around 8 C-130J's to to the same role. However i would rather spread the money. A single C-17 can effectively lift 7 C-27J's worth of cargo. So 1 extra C-17 and only 4 additional C-130J would be able to lift the same amount as 14 C-27J's. Sure these aircraft cant be in as many places but thats probably the only disadvantge. Operating fewer total aircraft also means less crew and maintenance.
Im pretty sure that 1 C-17 and 4 C-130J's will be cheaper than 14 C-27J's. Probably enough cash for a couple extra chinooks.
Personally, I think comparing the lift performance of the C-27J to the C-130J-30 is incorrect. The C-27J is suggested as a replacement for the DHC-4 Caribou which is no longer in production.
I disagree. I believe comparing the C-27J to the Caribou is the same as comparing the C-27J to a Herculues. The C-27J is much bigger than the Caribou just as the Hercules is much bigger than the C-27J. Performance of the C-27J is also half way between the Caribou and Hercules. The C-27J is much to big to be a direct Caribou replacement, it has too many capabilities of the C-130J's and not enough capbilities of the Caribou.
If we need to drop in 1 tonne of cargo into a really small area that we would usually use a Caribou for, we'd then use a Chinook. If we needed to carry 3 tonne of cargo from a normal airstrip that we'd usually use a Caribou for we could just use the larger C-130J. The C-130J would be able to take that small amount of cargo many times further at a much quicker speed. Integrating SLED into the C-130J's will allow them to make drops into remote area's that only the Caribou could get into.
In East Timor we really saw how small and short ranged our C-130's were. Thats one of the main reasons for the C-17 purchase. The C-130's are an excellent short range airlifter. The C-27J would be even shorter.
If we didn't operate the Hercules then the C-27J would be perfect. As C-17 >> C-27J >> Chinook is still a nice and even. Though we'd probably need more C-17's as the C-27J could not do long distance stuff.