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Research & Development


Phase I & Phase 2 SBIR Novel Oxygen Sources for Unmanned Applications (Navy ONR)
Undersea Vehicle Design Support to SBIR (Vehicle Control Technologies)

Core Competencies include Solidworks® 3 D CAD design, motor and drive sizing, thrmodynamic analysis, fluid system analysis, and power system design.

API Engineering LLC Provides Research and Development to Government Customers in the Fields of Propulsion and Power Systems and General Contract Engineering Services Involving Mechanical , Electro-Mechanical and Energy Systems   

API Engineering LLC was founded in 2009 to pursue business in propulsion systems and undersea power systems along with general engineering services. API Engineering draws on the propulsion and energy experience base of Advance Propulsion Inc, our asscotiate company office located in Tempe Arizona.

Since 2009 API has been developing power systems using API oxygen generator technology for the Navy utilizing thermal reactor technology.  Prototype oxygen systems for SOFC fuel cells are currently under test.


API Engineering is a customer responsive small business able to provide cost effective and innovative solutions to mechanical engineering problems. Our services have the benefits of competitive turnkey product development, experienced staff, and quick turnaround quality engineering solutions.

Design and System Engineering Services


Research & Development

Energy System Services

Mechanical Engineering

Design/Build Services

Scope of Services

Research & Development
API Engineering conducts internal and funded R&D in the fields of propulsion and power systems

  • Oxygen generation technology
  • Undersea fuel cell power systems