Applied Physical Sciences Corp

Applied Physical Sciences Corp, a General Dynamics subsidiary headquartered in Groton, Connecticut, delivers advanced engineering, modeling, simulation, and research and development services to the Department of Defense as a prime contractor (91% of recent awards) across naval platforms, undersea systems, and defense technology development. The vendor operates in full-and-open federal contracting without SBA set-aside designations; all recent prime work is competitively awarded or sole-source justified on the basis of incumbency or technical qualifications.

APSC's capability portfolio centers on naval engineering, undersea technologies, environmental modeling and forecasting, acoustic warfare systems, submarine propulsion, and advanced materials science. Representative prime work includes a $52.2 million cost-plus-fixed-fee definitive contract from the Defense Advanced Research Projects Agency for the Advanced Propulsor, Experimental (APEX) Phase 1A submarine propulsor design and risk reduction, awarded April 21, 2023, with completion targeted for May 31, 2026; a $29.6 million Office of Naval Research cost-plus-fixed-fee definitive contract (awarded February 21, 2023, completing December 31, 2026) for technology development supporting Virginia Class, Columbia Class, and next-generation SSN(X) nuclear submarine platforms; a $27.8 million Naval Information Warfare Systems Command definitive contract for the DARPA STO WILLOW acoustic warfare payload program (awarded August 31, 2023, completing February 10, 2027); and an $8.2 million Office of Naval Research cost-plus-fixed-fee definitive contract awarded December 17, 2025, for communications system prototype enhancements supporting the Passive Networked Low-Power Program (completing December 17, 2028). APSC also holds a $57.5 million single-award Indefinite Delivery Contract with Naval Sea Systems Command for Environmental Ship Motion Forecasting System engineering services (awarded February 1, 2022, completing February 6, 2027), under which the Navy has issued six delivery orders totaling over $3.57 million for platform-specific forecasting system development.

Customer concentration is heavily concentrated within the Department of the Navy and DARPA. The top five customers account for 98% of combined potential value across all awards. Naval agencies dominate by volume and dollars: the Office of Naval Research leads with 61 awards valued at $206.1 million combined potential; Naval Sea Systems Command follows with 51 awards at $179.3 million; Naval Information Warfare Systems Command holds 7 awards at $160.8 million; and Naval Air Systems Command brings 13 awards at $4 million. DARPA ranks third by dollar value despite placing fewer awards: 17 awards totaling $234 million combined potential value. This reflects DARPA's role funding high-value research programs (APEX, WILLOW, Bull Shark acoustic systems, and flexible OT IDVs for exploratory R&D), while Navy customers emphasize sustained engineering support across multiple platform classes.

APSC holds or participates in several parent vehicles. The $57.5 million Naval Sea Systems Command Indefinite Delivery Contract (N0016722D0001) anchors recurring delivery orders for ESMF system development. Additional IDCs include N0001411D0341 (4 task orders, $16.2 million combined potential value) and N0016718D0004 (4 task orders, $5.5 million combined potential value) under Naval customers. APSC also holds three DARPA Other Transaction IDVs: a $1 million SCORPIONFISH OT (awarded September 25, 2024) and a $600,000 general DARPA research OT (awarded February 3, 2023) for flexible tasking on maritime and aerospace engineering services, plus a newly awarded $525,318 XENA Phase 1 and Phase 2 OT (March 28, 2025). SeaPort-e placement carries 2 task orders valued at $45.6 million combined potential. Recent award activity shows 11 prime awards in 2025 and 2 in the first quarter of 2026 (RAPTOR Phase 1 OTA, $249,852, and ONR communications system contract), following relatively flat years of 7–8 awards annually from 2022–2024.

APSC faces significant recompete exposure: 8 awards with ultimate completion dates in the next twenty-four months carry combined potential value of $178.1 million, including the NAVSEA ESMF IDC (completing February 2027), the ONR nuclear submarine technology contract (December 2026), and the DARPA APEX contract (May 2026). The vendor's category concentration runs deep into defense R&D: 77 awards fall under NAICS 541712 (Research and Development in the Physical, Engineering, and Life Sciences except Biotechnology), with PSC coding heavily weighted toward R&D-Defense categories (Advanced Development, Applied Research/Exploratory Development, and Operational Systems Development). Top subcontractors on prime work include Dassault Systemes Americas (software and systems engineering tools), Woods Hole Oceanographic Institution (oceanographic research), GE Research (propulsion engineering), Southwest Research Institute (engineering services), and specialized suppliers in underwater acoustics, connectors, and precision machining. APSC also subcontracts to larger primes: recent sub awards include General Dynamics Mission Systems (MK 54 and MK 48 sonar kit design, MEDUSA system design, January–October 2025), The Boeing Company (XLUUV ORCA system design, December 2025), Raytheon Company (BARRACUDA development engineering, January 2025), and Johns Hopkins University Applied Physics Laboratory (Maritime Technology Research Program, April 2025 and January 2025). Service Contract Inventory data shows minimal SCI-reportable activity (2 records as named subcontractor, 0.1–0.0 FTEs across FY2022–FY2024), indicating APSC's federal revenue is dominated by R&D and engineering services contracts above or outside SCI reporting thresholds, not labor-hour-based service contracts.