NAI Programs

Recognized Leaders in Embedded Solutions

NAI is recognized as a leading supplier of rugged embedded solutions that can be found in many mission-critical aerospace, ground defense, naval defense, and industrial applications worldwide.

Outlined below is a small sample of programs that highlight the capabilities of North Atlantic Industries products and our unique COSA® architecture.


Aerial Reconfigurable Embedded Systems (ARES)

Aerial Reconfigurable Embedded System (ARES)

Transporting and resupplying troops in rugged, austere terrain has become a major challenge, especially as the U.S. military shifts to using smaller and more distributed combat units. The Aerial Reconfigurable Embedded System (ARES) was in need of an operational VTOL system with a more compact footprint than those of conventional helicopters, coupled with higher cruise speeds. NAI's Commercial-of-the-Shelf (COTS) SIU6 rugged chassis, populated with a highly configurable PowerPC-based SBC (64EP3) and exceptionally flexible and versatile, multifunction I/O VME boards (64C3) was the chosen solution. The ARES program is an example of how NAI’s modular and adaptive Custom-On-Standard-Architecture™ (COSA®) delivers SWaP-C efficient, I/O-intensive boards and systems with more processing power in less time at a lower system cost—all with no NRE. The integrator partnered with NAI for the ARES program due to our incomparable COSA capabilities. Chief among them is the ability to configure boards with up to six module slots and 40+ functions without having to spend man-years developing a processing and I/O system from the ground-up.

Commercial Aircraft Landing Gear

Landing Gear & Fuel System Testing

A leading European-based commercial aircraft manufacturer needed to test and simulate signals while designing the landing gear and fuel systems for two, new wide-body commercial aircraft models. They installed a variety of NAI's 6U VME boards (including 64C2, 64C3 and 64DL1) in large chassis and test equipment racks to support this testing. The boards included 28V Discrete Inputs and Outputs, LVDT Simulation Channels, and Analog Conversions (both A/D and D/A). NAI multifunction I/O boards were selected, based on the high channel density available and the many programmable features of these boards, as well as the available background BIT (Built-In-Test) capability.

Rotary Wing Avionics System

Rotary Wing Avionics System

An international military customer needed multiple communication interfaces for its helicopter, as well as a method to process many channels of various analog and digital signals. A rugged, conduction-cooled, self-contained system that could be networked to other systems on the helicopter was required. The SIU6 provided an excellent solution with a local PowerPC processor and over 100 channels of various intelligent, multifunction I/O. In addition, the SIU6 met all demanding environmental and EMI requirements. This fully integrated and tested network solution enabled the customer to interface and process all I/O signals in a SWaP-efficient box using COTS components.

AC-130 U Gunship

AC-130U Gunship

DoD requirements were to deliver a form, fit, and functional replacement for the LWCP (Loader Weapon Control Panel) and ECU (Electronic Control Unit) on the AC-130 Gunship.

NAI worked closely with SSAI engineers to select the exact hardware and firmware solutions to meet all their system needs. SSAI selected NAI's complete I/O and processing solution based on our field-proven, flexible COTS I/O, and Processor Technology.

“SSAI looked at numerous COTS solution sets, and NAI was the only vendor we found capable of meeting all the performance requirements with existing, proven equipment,” explains Cliff Driver, SSAI Vice President of Operations. “The final flight test results of the new ECU/LWCP system exceeded the requirements and improved the overall accuracy of the Gunship, as well as the reliability and maintainability of the gun systems — resulting in real benefits to USAF war fighters.”

Aircraft Ground Power Control

Commercial Aircraft Power Monitoring

NAI's Power Monitors are used by commercial aircraft customers such as American, Delta, Singapore, Monarch & China Airlines to monitor input power to aircraft electrical systems during switchover from aircraft to ground based power or when on a ground-based power source to protect onboard electronics & equipment. A switchover of power can cause spikes or phase reversals and missing phases, which can damage expensive onboard electronics. Ground-based power sources in different parts of the world can vary greatly in quality and damage critical components.

NAI power monitors, (Models iPM, PMA and YMA series) "watch over" the voltage and frequency of the input power to ensure that they are within prescribed high and low limits. They also look at the phase sequence in 3-phase systems. NAI power monitors use output relays, which energize and de-energize according to whether the power conditions are in or out of tolerance. These relays are typically used to trigger an alarm so that action can be taken to protect the system from damage.

Predator Reaper Unmanned Aerial Vehicle (UAV)

Predator / Reaper Unmanned Aerial Vehicles (UAVs)

Due to tight size constraints, the system designers needed an integrated Pulse Width Modulation (PWM), high-current, servo motor drive control and associated power supply for its FLIR (Forward Looking Infrared Radar) multi-spectral targeting system (MST-A). NAI's Multifunction I/O Board and Power Supply Divisions worked together under a very tight design schedule to deliver a dual-channel, VME PWM motor control card and VME power supply. The power supply provides clean power to the PWM and handles high-peak current. In addition, the UAV platform uses an NAI power monitor to manage input power. The Engineering team at NAI was able to execute with exceptional turnaround time — from concept to production in less than six months.

Flight Control Surfaces

Testing Aircraft Control Surfaces

Commercial aircraft manufacturers need to test and verify the accuracy of the aircraft's control surfaces prior to first flight test, customer delivery and as part of ongoing maintenance. The system requirements include high-channel density LVDT measurement with high accuracy positioning.

This customer turned to NAI for a COTS solution that could be fully integrated and work with a variety of frequency ranges and voltages. NAI proposed a 75C3 Multifunction I/O circuit card with LVDT/RVDT capable function modules to provide enough channels to test all moving wing and control surfaces. The NAI COSA architecture uses NAI Standard Library function calls, which simplified integration into the main system test rack.

By testing and verifying that the control surfaces are responding in accordance with safe operating parameters and that the responses are accurate, the pilot can be assured that he or she is receiving accurate feedback and maintaining safe operation. 

NAI 5330A

Precision Calibration

Commercial airlines and the calibration laboratories that support them require highly accurate, laboratory-grade instruments capable of simulating a synchro or resolver. Across the globe, NAI's 5300 Synchro Resolver Standard is the overwhelming favorite of commercial airline manufacturers and their customers for calibrating Automatic Test Equipment (ATE), or highly accurate avionics sensors and equipment aboard commercial aircraft. The NAI 5300 & 5330A are often selected due to the high, 0.0001° resolution and unmatched accuracy of up to 2 arc-seconds which is maintained through built-in automatic calibration, thereby reducing the need for costly, periodic lab calibrations.

Ground Defense

M60A3 Main Battle Tank

M60A3 Main Battle Tank

The M60A3 Integrated Fire Control System (IFCS) provides the tank with the ability to acquire and track both stationary and mobile targets while the tank is on the move. Two of NAI's DC/DC converters (55GS1 and 55KT1) power the IFCS electronics. These rugged conduction-cooled designs meet the requirements of MIL-STD-461, 704 and 810. The customer reviewed the complete costs of assembling their own solutions using a module-based approach and decided that our one-box, mount, connect-and-go solutions provided an overall lower-cost solution. In addition, the program utilizes an NAI DC/AC Sine Inverter (44KS1-01) to power a gyro. The customer experienced power fluctuations while using another supplier's product. In less than one month, NAI submitted a design for a form, fit and function replacement solution and subsequently received the order.

Fire Control COTS Solution

Fire Control

An international military customer needed to control the motion of a gun system with synchro interfaces. The solution had to be fast with no NRE and had to work "out-of-the-box" due to limited deployment times. The customer turned to NAI for a COTS solution that would be fully integrated and tested by one supplier. The system demanded a rugged solution with remote communications near the I/O and Gun Motors. NAI proposed the SIU33 to provide the digital discretes and synchro analog outputs needed to activate, rotate, and point the gun system— all done without an SBC in the box. Utilizing our COTS boards and Gig-E communications, our integrated solution helped accelerate our customer's time-to-mission.

Naval Defense

LCAC-SSC Data Acquisition Unit

The NAI SIU35 offers modular, intelligent Data Acquisition Control solutions for the SSC Program (video 2:19)


The Navy is replacing the existing LCAC with the LCAC-SSC, a faster, more efficient vessel with the ability to carry more payload. L-3 Maritime Systems selected NAI's SUI35 for the new ship's Data Acquisition and Control System. Six "common" Data Acquisition units are located throughout the vessel and each system communicates via Ethernet to the mission processor located in the control bay, keeping unnecessary hardware out of this area and closer to the sensors being controlled. NAI's rugged, SWaP-C efficient and flexible, Custom-On-Standard-Architecture™ COSA® enabled the customer to move forward with hardware decisions before knowing the final requirement, which helped to keep the program on schedule.

LHD 8 Amphibious Assault Ship

LHD 8 Amphibious Assault Ship

One of the design challenges on this 847-foot ship was managing the signals generated by over 12,000 sensors for the electrical generators, propulsion, engine turbine, and other critical management systems. Designers of the LHD 8 electronics chose North Atlantic's VME Intelligent Multifunction I/O card (64C1) and Serial Communications card (64D1) to integrate A/D conversion, D/A conversion, Serial and ProfiBus communications, Discrete I/O, RTD, and 4-20 mA signal data onto the VME bus. The systems' integrators reached the goal of reducing "manpower" by providing strategically distributed sensor interface systems dedicated to specific tasks and networked via Ethernet. Automated redundant and multi-point monitoring with shared sensor data was realized, easing the burden on the ships' systems management.

Through the use of NAI's products, designers reduced card count by 50%— cutting the costs, system size, weight, and power consumption of the system. In addition, the extensive test and diagnostic capabilities of the 64C1 improved system maintainability by making it possible to trace and identify signal interference faults, such as open lines and undefined range faults, to the card, module, and/or channel level for identification and action. Following successful deployment, the same VME systems were utilized in the next generation LHA-class amphibious assault ships.

Unmanned Sub (ACTUV)

Unmanned Sub (ACTUV)

NAI supplied an extremely high-density I/O and communication subsystem for the unmanned amphibious assault ship. This standalone subsystem is rugged and conduction-cooled. The ACTUV (ASW Continuous Trail Unmanned Vessel) Mission Processor connects to the SIU6 via two Gig-E ports to manage, monitor, and control 20 analog input channels; 4 analog output channels; 12 RTD channels; 48 highly programmable discrete I/O channels; and, serial, CANBus, and ProfiBus sensor data. By eliminating the SBC, NAI was able to reduce SWaP, increase overall reliability, and eliminate Board Support Package and Run-Time-License costs.


Recent Satellite

Test and Measurement Devices

A leading manufacturer of precision motion control products and systems for satellites, industrial machinery, wind energy, marine applications, and medical equipment requires high accuracy measurement instruments during their manufacturing and test process. As their end products are high-precision devices themselves, it is critical that the instruments they use for quality control and testing offer extremely high accuracy and resolution. They turned to NAI's High Accuracy Angle Position Indicator (Model 8810A) to provide measurement of their devices to 0.0001° resolution and 0.004° accuracy. This instrument allows for both manual and automated readings. In this case, the manufacturer used the automated method where measurement readings are through a computer.

Bakery conveyor

Conveyor System Synchronization

As a West Coast bakery's products grew in popularity, the company found that they needed an improved level of integration in the operation of independent machines used in their assembly line. Their goal was to boost productivity from 600 to more than 1,300 packages per hour. Hoping to achieve 1:1 synchronization between their multiple axis conveyor systems at a reasonable cost, the company turned to NAI for the Astrosystems Programmable Servo Synchronizer (Astro 1000).

The Astro 1000 was deployed to produce the control signals that keeps portions of the assembly process performed by independent systems in synch. The customer reports that the Astro 1000 provides them with great flexibility by making dynamic adjustments automatically, it has eliminated the used of unreliable mechanical cams and limit switches and allowed an increase of more than 215% in productivity.

Beverage dispensing conveyor belt

Beverage Dispensing

A beverage packaging facility needed a more precise solution that could program and control independently driven sets of chains used to position beverage products into group sequence positions. The goal was to move the bottles at a rate of 60 bottles/minute and over a 9-inch distance in 3 seconds. The operation required the ability to switch to different program sequences easily and on the fly while delivering accurate, reliable pin position information in a cost-effective solution.

The customer installed NAI's Astrosystems Programmable Servo Synchronizer (Astro 1000), which allowed personnel to easily program up to 8 different group sequence positions that were required to allow for a pick and place of the product to a cartoner. The synchronizing of pins, used to position products into different groups ensured that the group sequence kept pace with the rate of production, providing the desired rate of speed and repeatability of 0.1% or better within one second precision.

Roller Coaster Motion Control

Amusement Park Ride Motion Control

A diversified entertainment conglomerate needed to monitor and control the motion and safety of a new theme park ride. The requirements included providing high channels density for I/O command, control and status with real-time operating system support. The solution required rugged system components, as the system would be deployed on the ride itself. The customer turned to NAI for a COTS solution that could be fully integrated and used with a variety of Discrete I/O sensors and response indicators.

NAI proposed a 64Dx VME rugged circuit card with high-density Discrete I/O function modules to provide over 130 Discrete multi-purpose, programmable I/O channels. The high channel density, multiple-threshold programmability and relatively high current output switching capability, allowed the customer to interface and meet every Discrete I/O requirement while reducing card count, overall system cost, and false error reporting. Using a COTS product enabled the client to meet an aggressive project timeline, deliver their ride to the public as planned and continue to delight their visitors without incurring the cost and risks associated with a custom design.