FACTBOX: Budget plans for biggest U.S. weapons systems

(Reuters) - The Bush administration's proposed budget for fiscal year 2009 foresees spending $104.2 billion on new weapons systems, up from $99 billion in 2008.

In coming months Congress will debate and finalize a federal budget for fiscal 2009, which begins on October 1.

Following are details from the president's budget request for some of the Pentagon's biggest weapons programs:

FIGHTER JETS, HELICOPTERS

* Lockheed Martin Corp F-35 Joint Strike Fighter would get $6.7 billion in fiscal 2009, up from $6.5 billion in the current year.

* The V-22 Osprey, built by Boeing Co and Bell Helicopter, a unit of Textron Inc. and recently fielded for the first time in Iraq, is slated to receive $2.7 billion, up from $2.6 billion.

* Lockheed's F-22 fighter jet gets $4.1 billion, a slight drop from $4.4 billion in fiscal 2008. Officials said the budget does not include money to shut down the F-22 production line because the supplemental budget request for the wars in Iraq and Afghanistan will include additional F-22s, which means production will continue beyond 2009.

ARMY PROGRAMS

* The Army's modernization effort, the Future Combat Systems program run by Boeing, is due to receive $3.5 billion, up from $3.4 billion in fiscal 2008.

* The Stryker vehicle, built by General Dynamics Corp, is due to receive $1.3 billion, down from nearly $2 billion in fiscal 2008, with $1.9 billion still remaining in supplemental funds for the wars in Iraq and Afghanistan.

MISSILE DEFENSE

* Missile defense, which includes a wide range of programs including the ground-based midcourse program run by Boeing, is due to receive $9.4 billion in fiscal 2009, up from $8.7 billion.

NAVY SHIPS

* The Northrop Grumman Corp CVN-21 program to build a new aircraft carrier, is slated to receive $4.2 billion, up from $3.4 billion this year.

* The DDG 1000 destroyer, being built by both Northrop and General Dynamics will receive $3.2 billion, down from $3.5 billion.

* The Virginia-class submarine, also being built by both shipbuilders, receives $3.6 billion, up from $3.4 billion in fiscal 2008.

SPACE WEAPONS

* Several military space programs are also slated to receive large funding amounts in fiscal 2009, including the Evolved Expendable Launch Vehicle program, run by a Boeing-Lockheed joint venture, and Lockheed's Space Based Infrared System, a group of satellites that will help detect enemy missiles.

(Reporting by Andrea Shalal-Esa; Editing by Tim Dobbyn)