Showing posts with label logisitics. Show all posts
Showing posts with label logisitics. Show all posts

Tuesday, November 17, 2009

UAVs- MQ-8 Fire Scout


By now, most everyone in the world has some knowledge of Unmanned Ariel Vehicles (UAVs). They are talked about on the news, especially the news dealing with Afghanistan and Pakistan and the war against Al Qaeda and the Taliban going on there. The UAV that is most well known is the Predator, a fixed wing, propeller driven, remote control airplane on steroids. What some people have yet to realize is the fielding of large numbers of different types of UAVs has fundamentally changed the way wars are and will be fought. The UAV revolution will be just as important as the advent of combat aviation in WWI or the massive changes in tactics and strategy of helicopter warfare in the Vietnam War.


On to today's subject, the Northop Grumman MQ-8 Fire Scout UAV. While the Department of Defense has been using unmanned vehicles for quite some time, most were used as aerial targets or close (ish) range reconnaissance, target acquisition, and battle damage assessments. With the technology boom of the 1990's UAVs began to change from what some might call expensive and marginally useful toys to weapons of war in their own right. The Fire Scout is being developed to function as a multi-role UAV, capable of performing reconnaissance, situational awareness, and precision targeting support. This includes mounting weapons on the stub wings such as the Hellfire missile, which has been used to a great effect from helicopters and Predator UAVs, the Viper Strike laser guided weapons, and the Advanced Precision Kill Weapon System (APKWS) which is an updated, laser-guided version of the 70 mm folding-fin rocket, which many in the Army feel is very well suited to modern combat, especially in built up areas. The MQ-8 also has a very capable sensor suite, with options to have some or all of the following: a day/night scope with laser target designator, a mine field detection system, a synthetic aperture radar with the ability to track moving targets, and more. The Fire Scout was designed to be controlled over a data link derived from RQ-4 Global Hawk UAV, operating over a line of sight to a distance of 172 miles. The control system was to be fitted onto a ship, or could be carried on a Humvee vehicle for U.S. Marine and Army service.



Fire Scout, as a rotor winged vehicle, brings some new capabilities that UAVs have not had in the past. The ability to take off and land virtually anywhere is an amazing leap forward. Older fixed wing UAVs were often caught in giant nets suspended off the side of a ship. Obviously, this is probably not the easiest or most efficient way to do things and sometimes caused the vehicles to be damaged or lost. The Fire Scout has already demonstrated its ability to land on the deck of a moving ship, the USS Nashville, which was a first for the US Navy, and probably the world. Mobility and maneuver are some of the most important facets of war, one of the only things more important is timely intelligence. The Fire Scout will increase them all.


As the technology of UAVs has continued to evolve, military scientists, strategists, and planners have found new roles for the UAV to explore. Modern war, especially in an urban area, is very high tempo and for the soldier or Marine on the ground, that can often mean a lot of firing. Resupply in years past was a Jeep or truck with some crates on the back, driving from the rear up to the front lines. As the US Military has shrunk in size considerably in the last 50 years and conflicts have become more unconventional, supply lines are increasingly under attack. And if you can't go through it, over it is an option as well. One possible function of the Fire Scout is that of a emergency resupply vehicle. Now it will be much easier to support small units, operating far from friendly areas and supply dumps. It can take a load of up to 200 pounds of supplies, which is a significant amount of bullets and beans. Fire Scout is expected to have a range of at least 125 miles and to be able to operate up to 20,000 feet. Imagine this, a small detachment of soldiers are occupying a vital mountain peak in Afghanistan, providing intelligence. The enemy wants them out of there and launches an assault on their position. How long can they stay up there? Well, they certainly won't last long without help. The Fire Scout could fly in, drop a package with ammunition, medical supplies and water and food, all without risking a single life. A flight of three could come in and two could provide cover from the air for the third. This is a game changer, folks. The MQ-8 has been undergoing the normal testing and evaluation for a few years now and is expected to be fielded by the Navy aboard the USS McInerney in 2009.

Saturday, November 7, 2009

C-27J Spartan


Now transport and supply aircraft may not be all that sexy to you, but most of us (including myself) have not had one drop off ammunition to us when we were running low either.
The Air Force is in the process of acquiring a new aircraft known as the C-27J Spartan. The Spartan is described as a Hercules-light, referencing the C-130 Hercules, which is one of the best aircraft to ever fly and almost certainly the most versatile aircraft in the inventory.


The Spartan has about half the load capability of the Herc, with 3.5 pallet positions to the Herc's 6 to 8. It will bring much needed capabilities to the Air Force, though. The Spartan was designed from the outset to be very rugged and tough. This translates to higher readiness rates, easier and cheaper maintenance schedules, and (hopefully) better resistance to enemy fire. One of the main capabilities of the Spartan is its ability to use smaller or unprepared airstrips. It was envisioned as being a plane capable of operating easily in very austere and unforgiving environments.

The C-27 could conceivably be able to fill many different roles, from direct support to medevac with up to 36 stretchers, and even perhaps one day, combat as a mini gunship. It is used in Canadian service as a Search and Rescue aircraft and could be used for this as well in US hands. As a platform for paratroopers and Special Forces, the Spartan brings higher doors, room for 46 troopers in seats, and a smaller radar cross section, all of which would be appreciated. Also, there is less prop wash for jumpers because the engines are placed further out on the wing.



The smaller size of the C-27J can actually be a positive in many instances. Not every supply run needs dozens of tons of munitions and food, and by using a more appropriately sized aircraft for one mission frees up larger aircraft like the C-130 to perform other missions. Also the Spartan is said to have a higher power to weight ratio than the Hercules, which is certainly not a bad thing. The C-27 can climb and turn very fast, which is extremely useful especially in terrain like that of Afghanistan. It is rated up to 3 Gs on turns and can climb to 10,000 feet in 3 minutes. Combine that with a range of 1000 nautical miles with a payload of 10,000 kilograms and you have a very useful aircraft.


It remains to be seen if the Department of Defense and the Air Force will produce a gunship variant like they have with the current AC-130 and AC-47 of Vietnam. It seems to me that although the C-27 would certainly field fewer weapons than the AC-130, most likely leaving out the 105mm, it could still be extremely effective with a 25mm Gatling gun and a 40mm Bofors cannon. The Spartan can make pretty tight turns, has very good low speed maneuverability, good crew visibility and a potential for a long loiter time . All of these would be valued assets for a gunship, especially in the remote and difficult terrain of Afghanistan and the myriad difficulties of counter insurgency warfare. And if I was getting shot at on the side of a mountain somewhere, I would be very happy indeed to hear 1 small plane instead of 0 big ones.

Dimensions

Length 22.7m
Height 4.8m
Tail Height 9.6m
Wing Span 28.7m
Tail Span 12.4m
Cabin Height 2.6m
Cabin Floor Width 2.45m
Cabin Diameter 3.33m
Cabin Cross Section 6.96m2
Cabin Length 11.43m (including ramp)
Cabin Floor Area 23.23m2 (excluding ramp)
Cabin Volume 69.5m2 (excluding ramp)