Preissner Engineering & Consulting, LLC

Do It Better.

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About the firm

Preissner Engineering & Consulting, LLC is an Ann Arbor, Michigan-based engineering consultancy specializing in mechanical systems, structural design, advanced finite element analysis (FEA), 3D computer-aided design (CAD), computational fluid dynamics (CFD), and test data acquisition (DAQ). It provides innovative analysis and design solutions to organizations in high-tech industries including defense, aerospace, transportation, energy, and infrastructure.

Firm type
Mechanical Engineering · Structural Engineering · Simulation Engineering · Aerospace Engineering · Defense Engineering

Credentials

NIST 800-171

Capabilities

Finite Element Analysis

Service website

Advanced simulation services spanning basic static analysis to complex assemblies with dynamic, vibration, contact, nonlinear, and fatigue effects across metallic, non-metallic, and composite materials.

  • Structural Analysis

    Comprehensive evaluation including stress and strain analysis, buckling and stability assessments, dynamic and impact loading, and fatigue and durability prediction.

  • Specialized Environments Simulation

    Analysis of complex physical phenomena such as thermal management, vibration and modal effects, seismic and shock simulation, and fluid-structure interaction.

  • Composite Material Analysis

    Evaluating structural performance, damage prediction, and stress states in advanced composite and non-metallic materials.

Computational Fluid Dynamics

Service website

Capabilities are organized into targeted child services.

  • Comprehensive fluid analysis capabilities
  • Transient CFD Analysis
  • Compressible
  • Multi-phase flow with complex boundary conditions
  • Heat transfer
  • Internal/external flow paths

Testing and Data Acquisition

Service website

Capabilities are organized into targeted child services.

  • Instrumentation
  • Test data acquisition to verify physical components
  • Validate computational analyses
  • Interpret physical test results

3D Computer-Aided Design

Service website

Precision 3D modeling utilized from initial design space exploration through the production of finished drawings for communication and fabrication.

  • Concept Development

    Early-stage exploration of design spaces for form, fit, function, or motion studies.

  • Electronic Enclosure Design

    Detailed design and packaging of robust electronic enclosures engineered for challenging environments.

  • Below-the-Hook Lifting Devices

    Design and analysis of custom structural lifting hardware tailored to unique industrial applications.

Specialized Certification

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Technical analysis, planning, and coordination to secure rigorous airworthiness and logistics certifications for critical hardware.

  • Air Force Air Transportation Certification

    Securing Air Force Air Transportation (ATTLA) certification for transporting complex payloads on specialized military transport aircraft such as the C-5.

Industries

Aerospace · Space · Defense · Transportation · Industrial · Manufacturing

Projects

James Webb Space Telescope Transporter (STTARS)

Space · Client: Nelson Manufacturing

Project details

Teamed with fabricator Nelson Manufacturing to design, analyze, manufacture, and test STTARS, the specialized transporter for NASA's James Webb Space Telescope. Performed complex assembly finite element analysis (stress and shock), directed critical technical design choices, developed the test plan, and led the Air Force air transportation (ATTLA) certification effort for C-5 aircraft flight.

Custom 10-Axle Rocket Motor Transporter

Aerospace · Client: Aerospace OEM

Project details

Partnered with an aerospace OEM and manufacturer to design, analyze, and test a custom 10-axle, large-payload transporter. Performed detailed finite element and fatigue analyses to ensure complete compliance with strict performance specifications, integrating a custom frame geometry, hydraulic suspension, and ultra-high-strength steel. Instrumented the first article with accelerometers, strain gauges, and string pots to validate analytical predictions.

Engine Ground Test Bellmouth

Aerospace · Client: Aerospace OEM

Project details

Designed and analyzed a carbon fiber composite engine ground test bellmouth over a honeycomb core. Conducted static and dynamic finite element analyses to verify full compliance with demanding stiffness, strength, and vibration guidelines.