Sounding Rocket Program 4

The Sounding Rocket Program 4 (SRP-4) is a Master Indefinite Delivery/Indefinite Quantity (IDIQ) contract awarded by the Air Force Space and Missile Systems Center, Launch Systems Enterprise, Experimental Launch and Test Division. The contract enables suborbital launch services for ballistic targets and orbital launch services for small payloads (0-400 lbs) targeting low earth orbit. With a total shared ceiling of $877 million, the contract supports national security space programs, missile defense testing, and experimental flight evaluations through comprehensive launch vehicle and related service provisions.

Task orders under this IDIQ predominantly feature Northrop Grumman Systems Corporation as the primary contractor, with task order values ranging from $39,000 to $166 million and performance periods typically extending 1-3 years. The delivery orders exhibit diverse pricing structures, including Cost Plus Incentive, Cost Plus Fixed Fee, and Firm Fixed Price, with most task orders supporting missile defense, launch vehicle development, and experimental flight testing. The Space and Missile Systems Center serves as the primary funding agency, and task orders consistently lack specific small business set-aside designations. Performance locations appear concentrated in Arizona, California, and New Mexico, with contractors like Northrop Grumman, Space Vector Corporation, and Aerojet Rocketdyne frequently executing mission-critical launch and rocket system development tasks.