Fórum Defesa Brasil

XM2001 Self-Propelled Howitzer
Crew: 3

Combat weight (Not-to-Exceed Requirement weight): 50 U.S. Ton

Curb weight 39.8 U.S. Ton

Power-to-weight ratio 30 Horsepower/U.S. Ton

Nominal ground pressure: 175 KN/M2

Length of Overall Vehicle

Barrel horizontal (overhang)
Hull : 42 ft 4 inches, 17 ft 9 inches, 24 ft 8 inches

Width of Overall Vehicle

Hull Turret
11 ft 6 inches. 11 ft 6 inches, 10 ft 9 inches

Height (to top of turret / structure): 9 ft 6 inches

Ground Clearance: 17.2 inches

Track width: 22 inches

Length of track on ground: 14 feet 2 inches

Maximum hard surface road speed: 42 mph

Cruising road range: 251 miles

Maximum Cross-Country Speed: 24 mph

Gradient: 60 % - Side slope: 40 %

Climb vertical obstacle: 2 ft 8 inches

Cross trench / gap width: 8 ft 2 inches

Fording Depth: 4 ft 2 inches

Engine: Honeywell LV100-5

Transmission: Allison 5060-3

External Suspension Units: GDLS 3870 Phase 3

Electrical system: 270 VDC

Armament (main): 155 mm, 56 caliber

Armament (secondary): 0.50 caliber M2 MG

Elevating mass (Combat): 9.330 pounds

155 mm Gun Tube: 3.952 pounds

Recoiling Mass: 6.325 pounds

Recoil length: 28 inches

Muzzle brake efficiency: 0.6 %

Recoil force: 760 KN (max)

Shot travel: 24 feet 7 inches

Ammunition: 48 projectiles (155mm) and 208 MACS charges

155 mm Gun control system: Electric

Maximum rate of gun traverse: 10 Deg/sec

Maximum rate of gun elevation: 13 Deg/sec

Elevation/depression: +75 / -3 Degrees

Turret traverse: +/- 20 Degrees

Max range: 40 km using M549 projectile at Zone 6

Muzzle Velocity (at Max range): 3143 ft/s

Into action time (from the move): 30 seconds

Rate of fire (maximum): 10-12 Rounds/minute for 3 to 5 minutes

Resupply: Transfer 48 projectiles and 208 MACS charges from RSV in 10.4 minutes

Impulse: 54.000 Nsecs


XM2002 Resupply Module (Tracked)
Crew: 3

Combat weight (Not-to-Exceed Requirement weight): 50 U.S. Ton

Curb weight: 37.1 U.S. Ton

Power-to-weight ratio: 30 Horsepower/U.S. Ton

Nominal ground pressure: 175 KN/M2

Length of Overall Vehicle

Hull: 24 ft 7 inches, 24 ft 7 inches

Width of Overall Vehicle

Hull : Turret - 11 ft 6 inches, 11 ft 6 inches, 10 ft 9 inches

Height (to top of turret / structure): 9 ft 6 inches

Ground Clearance: 17.2 inches

Track width: 22 inches

Length of track on ground: 14 feet 2 inches

Maximum hard surface road speed: 42 mph

Cruising road range: 251 miles

Maximum Cross-Country Speed: 24 mph

Gradient: 60 %

Side slope: 40 %

Climb vertical obstacle: 2 ft 8 inches

Cross trench / gap width: 8 ft 2 inches

Fording Depth: 4 ft 2 inches

Engine: Honeywell LV100-5

Transmission: Allison X5060-3

External Suspension Units: GDLS 3870 Phase 3

Electrical system: 270 VDC

Armament (secondary): 0.50 caliber M2 MG

Ammunition: 100 projectiles (155mm) and 442 MACS charges

Resupply: Manually upload 100 projectiles and 442 MACS charges in 65 minutes



XM2003 Resupply Module (Wheeled - M1075 PLS )

Crew: 2

Combat weight (Not-to-Exceed Requirement weight): 44 U.S. Ton

Curb weight: 32.9 U.S. Ton

Length of Overall Vehicle: 36 ft 2 inches

Width of Overall Vehicle: 7 ft 10 inches

Height (to top of turret / structure): 11 ft 9 inches

Electrical system: 270 VDC

Ammunition: 100 projectiles (155mm) and 448 MACS charges

Resupply: Manually upload 100 projectiles (155mm) and 448 MACS charges in 65 minutes

O Comanche também foi um projecto de artilharia auto-propulsionada que não avançou?

Mas este Cruzader está a andar e a serem fabricadas as primeiras unidades para testes.

On July 26, 2002, Under Secretary of Defense for Acquisition, Technology and Logistics Edward C. "Pete" Aldridge, Jr., signed a memorandum directing the U.S. Army to take prudent and deliberate actions to bring about an orderly termination of the Crusader program. In the memo, the Army was directed to ensure that current technology development continues either as part of an indirect fire technology demonstration or as part of other transformational programs. On the same day, Secretary Aldridge provided Congress with the Army's Indirect Fires Report and a reprogramming request to transfer $32 million from Crusader to new variants of the Future Combat Systems (FCS). Congress has approved the reprogramming request....

...By early 2002 the Army had spent $2 billion on the Crusader to date. It would take another $9 billion to complete the program. Critics maintain the Crusader is too big and heavy for the lighter, more mobile Army of the future. As defense officials worked through the fiscal 2004 Defense Planning Guidance process, some alternative technologies came to light. There were some Crusader-like technologies that evidently showed a lot of promise. It became apparent to DoD officials that proceeding with the Crusader could delay or prevent funding promising technologies that could benefit all services. Deputy Defense Secretary Paul Wolfowitz asked Army Secretary Thomas White to come back within 30 days with a plan that assumes the Crusader is canceled and invests the freed $9 billion in other, more transformational, technologies. On 03 May 2002 Army Secretary Thomas White asked the Army inspector general to look into possible inappropriate behavior by service officials in connection with the Crusader artillery system program...

VICTOR escreveu:Só pra constar, o Comanche não era exatamente para ser o substituto do Apache, e sim do Kiowa Warrior, na função de helicóptero de reconhecimento e ataque leve, daí sua designação RAH-66. Ele seria um complemento ao pesadamente blindado AH-64.

Comanche will replace the OH-58A,C,and D and the AH-1 family as the light attack and recon asset for the Army. In Light and Cav divisions, the Comanche will be the attack helo, in Heavy Divisions, Comanche will seek targets for Apache, which is the heavy hitter.

Rui Elias Maltez escreveu:Então, isso significa que esse projacto esta em "banho-maria", ou seja, meio congelado, embora a parte de investigação prossiga.

O Tópico pretendia discutir se este será um projecto com, e para o futuro.

E eu, por mim, acho que é, embora, para ter todas as essas potencialidades, obrigue a um enorme esforço logistico, o que de resto, para os EUA nunca foi problema.

Se calhar o problema está nos custos, já que os EUA têm actualmente excelentes plataformas de artilharia auto-propulcionada, mais modernas que os nossos M-109, e ainda os gigantes M1A Abrahams, que também dão um jeito no tiro.

Será que é um projecto para o século XXI, ou poderão haver outros?

FCS will, over time, replace the current fleet of 'heavy' vehicles - the Abrams tanks and Bradley Fighting Vehicles with a new family of manned and unmanned ground vehicles and aerial vehicles. The new manned ground vehicles will be both lighter and smaller than the current fleet. Accordingly, the FCS family-of-systems maximum essential combat configuration weight will be 19 tons. This facilitates both rapid strategic (inter-theater), multi-modal (air, land, and sea) deployment and operational (intra-theater) maneuver by assets similar to C-130 profile aircraft.These lighter, smaller vehicles are designed to fit into a C-130-like plane, which allows them to be flown to a conflict anywhere in the world in 96 hours, rolled off and ready to fight.