At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people’s lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation’s history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work — and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they’re making history.
Northrop Grumman Innovation Systems designs, builds and delivers space, defense and aviation-related systems to customers around the world. Our main products include launch vehicles and related propulsion systems; missile products, subsystems and defense electronics; precision weapons, armament systems and ammunition; satellites and associated space components and services; and advanced aerospace structures.
We are currently seeking an experienced Theoretical Physicist to provide technical leadership to our R&D Motor Health Management team in our Promontory, UT offices.
Role description & Responsibilities:
As a Theoretical Physicist in the Propulsion Systems R&D Labs you will be responsible for creating models of energetic material mixtures and modeling system behaviors of the devices that employ them. You will have ownership of your work from the proposal phase to final conclusions. You will parameterize the models under study with chemical, mechanical, and meso-level data. Hence, knowledge of various experimental techniques is a plus. By applying boundary conditions of interest (e.g., temperature, humidity, displacement, loads) to the equations governing material behavior, and using associated error roll-up of all uncertainties, you will deliver predicted material and/or system behaviors with confidence intervals. You will also be responsible for designing and overseeing teams to perform tests supporting validation of the models.
Deriving complex material and processing models from the material microstructure, utilizing best available theory, computational tools, and software. The model types and mathematical techniques may include but are not limited to
Chemical kinetics and diffusion processes in multiple materials for arbitrary boundary and initial conditions.
Techniques to derive asymptotic solutions to aid in solving stiff equations.
Polymer physics and viscoelasticity
Heat transport models
Particulate mechanics models
Slurry mechanics models
Data analysis and statistics skills, including
Monte Carlo algorithms
Error roll-up statistical tools including regression
U.S. Citizen (DoD Secret security clearance will be required)
In-depth familiarity with classical mechanics, electromagnetic theory, thermodynamics, and quantum mechanics.
Excellent mathematical skills, both analytical and numerical, including
Solutions of differential equations, both analytical and numerical
Approximations of difficult nested integrals and sums, including a working knowledge of many of the special functions of mathematics
Good writing and verbal/presentation skills with the ability to write proposals, publish technical papers, compile final reports for large, multidisciplinary programs
Good team-worker, especially the ability to work well with a multi-disciplinary team
Skills & Qualifications:
Ability to program in high-level languages (e.g., C++, Python and Mathematica).
Must be able to design and direct complex and expensive test programs to support modeling efforts.
Familiarity with condensed matter field theory and group theory is desirable.
Understanding of solid mechanics, chemical kinetics, diffusion (and general transport) phenomena, fluid mechanics, and particulate/multi-phase mechanics.
Familiarity with the operation of computational chemistry codes such as Gaussian16, NWchem, or Schrodinger is a plus.
Familiarity with the operation of multi-physics numerical simulation software such as CTH, ALE3D, or ANSYS Autodyn is a plus.
PhD degree in Physics plus 5 years’ experience
Northrop Grumman is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO/AA and Pay Transparency statement, please visit www.northropgrumman.com/EEO. U.S. Citizenship is required for most positions.
About Northrop Grumman
With annual revenues in of nearly $4.5 billion, over 12,000 employees, and operations in about 20 states, Orbital ATK is a company on the move. Our mission is to ensure that our customers accomplish their mission — whether it’s a technological breakthrough, a satellite launch, or protecting our nation. The company is the world’s leading supplier of solid rocket motors, a leading provider of launch vehicles, satellites and other space systems, and the nation’s largest manufacturer of ammunition.
Orbital ATK Flight Systems Group provides products and services that span the launch, missile systems and aerospace markets. We are a premier producer of solid rocket propulsion systems and specialty energetic products; a leading provider of small and medium class space launch vehicles for Civil, DoD and Commercial missions; a major supplier of interceptor boosters and target vehicles for missile defense; and a world class manufacturer of composite primary and secondary structures for commercial and military aircraft and launch vehicles.
AVS is a partner in the AIP Career Network, a collection of online job sites for scientists, engineers,
and computing professionals. Other partners include Physics Today, the American Association of Physicists in Medicine (AAPM), American Association of Physics Teachers (AAPT),
American Physical Society (APS Physics), IEEE Computer Society, and the Society of Physics Students (SPS) and Sigma Pi Sigma.