Thomas Instrument Wins $210 Million Air Force Contract to Remanufacture B-2 and B-52 Launcher Drive Units

Thomas Instrument of Brookshire, Texas, has been awarded an estimated $209.96 million contract to remanufacture the power drive unit for the Common Strategic Rotary Launcher (CSRL) carried by the B-52 and B-2 bombers. The Air Force Sustainment Center announced the sole-source award in the Pentagon’s contract notice for 28 September, with work scheduled to run through 27 September 2036.

The award is an indefinite-delivery requirements contract, and the notice says no funds were obligated at the time of award. The Air Force Sustainment Center at Tinker Air Force Base, Oklahoma, is the contracting activity, and all of the work will be done at Thomas Instrument’s Brookshire plant.

Thomas Instrument CSRL Power Drive Unit Contract

The notice describes the work as remanufacture of the B-2/B-52 CSRL power drive unit (PDU). It is a requirements contract, so the Air Force orders units as it needs them, and the $209,961,884 figure is an estimate rather than a guaranteed payment.

What Is the Common Strategic Rotary Launcher?

The CSRL is the rotating rack inside the bomb bay that holds cruise missiles and bombs on the B-52 and the B-2. According to Air & Space Forces Magazine, the B-52’s CSRL could carry only gravity nuclear weapons, the nuclear Air-Launched Cruise Missile and the conventional Air-Launched Cruise Missile, which is why the Air Force built a separate Conventional Rotary Launcher for other munitions.

A 2023 Air Force presolicitation for what appears to be the same part (NSN 1650-01-276-4376) describes it as a hydraulic power drive unit that actuates the opening of the B-52 and B-2 rotary launcher door. It lists the unit at about 260 pounds and 4 by 2 by 2 feet. That notice named Hamilton Sundstrand as the approved source, and said qualification requirements applied. The 2026 notice does not explain why this award went to Thomas on a sole-source basis, so the link between the two documents is our reading, not a stated fact.

Why Does the Air Force Need Launcher Parts Through 2036?

Nuclear cruise missile carriage is the launcher’s most sensitive job, and the fleet it serves is old. According to the Government Accountability Office report covered by Air & Space Forces Magazine on 31 July, the Air Force has 75 B-52s averaging about 65 years old, and many original parts makers are out of business. The B-1 and B-2 are expected to retire in the late 2030s, while the B-52 is meant to fly into the 2050s.

The Long-Range Standoff missile is the next weapon for these launchers. Raytheon’s AGM-181 is to replace the AGM-86 cruise missile and, per Wikipedia, be carried by the B-52, B-2 and B-21. In January 2024 the Air Force sought industry input on converting the CSRL and the conventional launcher into a nuclear rotary launcher, including 25 upgrade kits over two to three years. A drive unit contract ending in 2036 covers the hardware that must keep working while that weapon arrives.

B-52 Modernization Timeline

The launcher contract sits beside a much larger rebuild of the B-52 that will produce the B-52J. The Air Force says the work is meant to keep the bomber relevant through 2050 and beyond, and the same Defense Post report gives the current status. Conventional weapons such as JASSM cruise missiles use other carriage arrangements.

Who Is Thomas Instrument?

Thomas Instrument is a privately held aerospace supplier that describes its work as engineering, overhaul, manufacturing, testing and vacuum heat treating for flight-control and actuation hardware, according to its website. Federal records list it as a small business, and the award is a large step up: GovConInABox shows about $198 million in total federal contract value across 1,626 awards since January 2022, before this notice.

It is already a regular Air Force Sustainment Center supplier for the B-1B. HigherGov reports a roughly $23.5 million contract, posted 27 September, to remanufacture B-1 asymmetry brake sensors through September 2031, which drew one offer. Its own headline rounds the value to $24 million. A separate May 2026 contract covers the B-1B electro-mechanical actuator, with a ceiling of about $8.9 million.

Thomas Instrument CSRL Contract FAQ

How much is the Thomas Instrument contract worth?

The notice gives an estimated value of $209,961,884 for an indefinite-delivery requirements contract, with no funds obligated at award.

What is a CSRL power drive unit?

It is a hydraulic drive unit that, according to a 2023 Air Force presolicitation for the same part family, actuates the opening of the B-52 and B-2 rotary launcher door.

Was the contract competed?

No. The notice says it was a sole-source acquisition and does not give the justification.

Where will the work be done, and until when?

At Thomas Instrument in Brookshire, Texas, with completion expected by 27 September 2036.

Does the contract involve new launchers?

No. It covers remanufacture of existing power drive units, not new launchers or the LRSO integration work.