Engineering Services

Technical aeronautical solutions for a specialized industry
  • 01

    Engineering Services
  • 02

    FAA Certification
  • 03

    Major Repairs and Alterations
  • 04

    Special Mission Support
  • 05

    Out of Production Aircraft Support

Service Support that Keeps you in the air

Aeronautica can provide engineering services in a wide variety of specialties as well as various fields such as aerospace, nautical, systems, etc.. The following describes Aeronautica’s capabilities in each of these specialties:

01 External and Internal Loads

Aeronautica’s engineering staff is experienced in the development of aircraft loads for use in both static and fatigue analyses. Loads developed include both external as well as internal and even load allowables. The following describes the types and methods of loads development:

  • External aerodynamic and inertial loading utilizing the FAA Loads program as well as thru CFD analysis
  • Aircraft internal loads using Aeronautica’s Unit Beam Solver as well as thru FEM such as Nastran
  • Internal skin and stringer allowable loads accounting for buckling effects through Aeronautica’s Panel 2D Method
  • Weight and Balance development using standard industry methods

02 Structural Design

Aeronautica’s engineers have extensive experience in the design of both simple and complicated detail parts, assemblies and installation for the aerospace market. Aeronautica’s design team can develop and produce quality engineering designs to support projects ranging from simple repairs to major modifications, custom interiors and new aircraft development projects.

Designs for detail parts at Aeronautica can be generated in either 2-dimension format drawings or 3-dimension electronic datasets. The datasets utilized by Aeronautica’s designers can be shared thru universal data sets with vendors to tailor the designs to meet material and schedule requirements. The design staff at Aeronautica is experienced in all ranges of detail part design from simple sheet metal parts to complex contour major components such as wing attach fittings, engine mounts, and integrally machined components. Their expertise ranges from primary airframe structure such as wing or fuselage structure to secondary structure and even aircraft interiors.

Aeronautica’s design team is especially experienced in providing both assemblies and installation drawings which meet the requirements and needs of the manufacturing and production process. Particularly the assemblies and installations developed at Aeronautica provide detail repair steps and procedures in order to both facilitate the assembly process and meet stringent FAA requirements for major repairs and alterations.

All designs at Aeronautica, whether a detail part or assemblies/installations are designed to meet the stringent FAA requirements to obtain the required certification.

Aeronautica’s design staff utilizes the following design platforms:

  • DraftSight
  • Catia V5
  • AutoCAD
  • Solid Works

03 Static Strength

The Aeronautica structures staff can perform stress analysis for a wide variety of aircraft structures. The structures staff is well versed in numerous analytical methods and techniques. This includes both industry standards such as Bruhn, ESDU and NACA/NASA methodologies as well as numerous OEM methods.

  • Classical Static Stress Analysis
  • Detailed Stress Analysis by FEM

04 Composites

The structural staff at Aeronautica has extensive experience in the analysis of composite materials utilized in the fabrication of both primary and secondary structures. Past experience includes both static ply level and laminate level analysis as well as the evaluation for durability requirements. Additionally, the staff has specific experience in the detail level and installation level analysis of both small and large composite radomes. Analytical tools utilize both standard industry methods as well as finite element analysis.

  • Ply-by-Ply analysis of composites using MSC/Nastran & Laminate Codes
  • Bonded and bolted-bonded joint analysis using computational methods
  • Failure Index and Margin of Safety calculations at the ply and laminate level

05 Fatigue & Damage Tolerance Analysis

Aeronautica’s staff includes specialist engineers who are thoroughly familiar and experienced in providing technical support in the areas of damage tolerance, widespread fatigue damage, safe life evaluations and aging aircraft fleet issues. With the increasing age of both commercial and military aircraft fleets worldwide and latest FAA regulations such as Aging Safety and WFD rules, the necessity for a structural life assurance program is ever more important. Personnel at Aeronautica have extensive experience in the analytical methods and implementation of structural integrity programs for a wide variety of aircraft. This includes a thorough knowledge of both military and commercial requirements such as:

  • Air Force Regulation AFGS 87221
  • FAA Part 25.571 Damage Tolerance
  • FAA Repair Assessment
  • FAA Part 26 Aging Safety Rule
  • FAA WFD Rule
  • FAA Advisory Circular 25.1529
  • FAA Advisory Circular 91-56

Aeronautica’s staff consists of qualified, professional engineers with extensive experience and training in performing analyses of aging airframes to the latest regulatory and military requirements. The basic analytical cornerstones that provide a state-of-the-art structural life assurance program are:


  • Damage Tolerance & Durability Analysis
  • Residual Strength Analysis
  • Fail Safe Analysis
  • S-N Material Data and Test Correlation
  • Stress Life and Strain Life Fatigue Analysis
  • Stress Severity Factor Generation
  • Generation of Flight-by-Flight Stress Spectra
  • da/dN Material Crackgrowth Rate Database
  • Derivation of Stress Intensity Factor (SIF) Solutions
  • Detailed Stress Analysis and FEM capability
  • Crackgrowth Analysis using Linear Elastic Fracture Mechanics
  • Establishment of Inspection Intervals and incorporation into either USAF Force Structural Maintenance Plan (FSMP) or FAA Supplemental Structural Inspection Document and Airworthiness Limitations

Aeronautica’s staff utilizes the following commercial codes in performing detail analyses:

  • NASA’s NASGRO Crack Growth Code
  • UDRI’s Cracks2000 Crack Growth Code
  • MSC/NASTRAN Finite Element Code
  • Stress Check Finite Element Code
  • Aeronautica’s Unit Beam Solver
  • Aeronautica’s Fatigue Load Interaction Solver
  • Aeronautica’s Flight by Flight Spectrum Solver
  • Aeronautica’s Panel Allowable Solver

06 Electrical Design and Analysis

The Aeronautica electrical staff can perform a wide variety of tasks including the development of wiring diagrams, loads analyses, as well as systems integration. Additionally, Aeronautica’s staff holds DER certificates in Electrical and Systems for both Part 23 and Part 25 aircraft.

  • System Block Diagrams
  • System Integration
  • System Safety Assessments
  • Electrical Load Analysis
  • Functional Test Procedures
  • Electromagnetic Compatibility Analysis
  • Airplane Flight Manual Supplements