Aircraft, Avionics, Flight Controls, Safety & Reliability Analysis

Safety Analysis – Per ARP4761 & ARP4754A

NSS provides extensive Systems Safety Analysis experience in the development of fixed-wing and rotorcraft in accordance with ARP4754A and ARP4761 requirements.

Our safety team developed and performed safety analysis for numerous highly complex systems projects. They possess a deep knowledge of all aircraft systems and know-how to satisfy regulatory requirements.

Some safety and reliability services we offer:

Safety Development Planning
Functional Hazard Assessment (FHA)
Systems Safety Assessment (SSA)
Failure Modes and Effects Analysis (FMEA)
Failure Modes and Effects Analysis Substantiation Testing
Common Mode Analysis (CMA)
Reliability Predictions
Consultation

Systems Design – Per ARP4754A

Strong experience in aircraft systems coupled with proven systems development methods to reduce the development and V/V efforts.

Aircraft Level Systems Requirement Development
MBSE – Model Based Systems Engineering
Systems Design and Performance Analysis
Aerodynamics and Systems Modeling
High Level and Low-Level Requirements Development
Effective Verification and Validation Test Strategies Development
Engineering Planning and Process Development

The following lists systems that were developed by NSS:

Major Aircraft Systems

Primary Flight Controls – FBW
Secondary Flight Controls
Flight Management Systems, NG
Electronic Engine Controls
Electrical Power Generation & Distribution
Power Storage & Battery Management
Navigation & Communication
Display Systems
Integrated Modular Avionics (IMA)
Electrical Wiring Interconnect System (EWIS)

Aircraft Utility Systems

Environmental Control System
Fuel Control System
Fire Protection System
Ice/Rain Protection System
Landing Gear System
Brake & Steering System
Exterior & Interior Lighting
Bleed Air System
Cabin Pressure
Oxygen System
Cabin Systems (Including DOORS)

Software Development – Per DO-178B/C

NSS’s software engineers are well versed in the requirements of safety-critical software for the aerospace applications We offer software development services from planning and development, integration and validation processes per DO-178B/C including model-based development.

We have special expertise in Closed Loop Control Systems Development and Model-Based Development using MATLAB Simulink and auto-code generation. We adhere to and produce high-quality RTCA DO-178B/C Level A compliant software.

Our experience spans all phases of the safety-critical and real-time embedded software development for mission-critical avionics and telecommunications.

NSS has extensive development experience in Application Development, Communications System Software, Real-Time Operating Systems and Built-In Testing for the aerospace industry.

Hardware Development – Per DO-254

NSS’s hardware engineers are well versed in the development requirements for aerospace embedded safety-critical systems. We offer embedded software and hardware development services from planning, design, integration, verification, and validation in accordance with RTCA DO-178B/C, DO-254 traditional and Model based approaches. Our processes comply with DAL-A development requirements.

Our team is experienced in decomposing systems requirements into high and low-level hardware and software requirements, generate the derived requirements, design and build aircraft systems simulations, build prototype hardware, and/or build the end product including mechanical packaging and test fixtures.

Verification and Validation

NSS provides experienced and dedicated engineers for DO-178B Level A Verification and Validation (V&V) efforts. Offering competent support all the way through certification, our experience can prevent costly problems resulting from incomplete or misguided testing.

NSS has extensive experience performing the following system and software level DO-178B activities:

Verification/validation Planning
Verification and Validation Processes Development
Test Case Development, Execution, and Results Analysis
Test Coverage Analysis
Aircraft System Level or Product Level Test Automation
Test Bench Design & Build

SOI Audits & DER Support

NSS provides comprehensive DER services to support any or all phases development through certification for part, 23, 25, 27 and 29 aircrafts for simple and complex systems. We develop or assist in the development of the engineering process and planning documentation, systems, high and low-level requirements development, Verification and Validation planning and execution, conducting or supporting SOI audits, data approval and submittal including ODA representation with a thorough understanding of the application of the following FAA guidelines:

Systems Development Per ARP4754A
Safety Development Per ARP4754A and ARP4761
Software Development Per DO-178B/C
IMA Development Per DO-297
Hardware Development Per DO-254

Other Services

NSS can support any program need for resources or expertise. Our workforce is diverse and knowledgeable to support your program needs;

DO-178B, DO-254, ARP-4761 & ARP-4754 Training
DO-178B and DO-254 Certification Planning and Execution
DER Support & ODA Representation
Project Development Audits (Internal & FAA SOI)
Requirements Development Reviews or Audits
Development Process Program Planning
Simulation Modeling
Schematic Development
Design & Process Reviews
Technical Proposal Effort
Design Optimization
Root Cause Analysis
Program Management
Test Benches and Custom Electronics