Applications

Application

• Virginia Class Submarine

Control & Indicator Unit Function

• The control and indicator unit contains the controls and indicators required to operate and monitor the towed array handling system. Handling controls and operating parameters displayed include array stowed/unstowed, cable scope, deployment/retrieval speed, hydraulic, and flushing water pressures

Cable Data Box Function

• The Cable Data Box, which contains limit switches and encoders, supplies operating parameter signals to the control and indicator unit

Application

• F-16 Jet Fighter Aircraft

Function

• Provides manual control of the aircraft yaw, pitch, and roll

Features

• NVIS compliant to MIL-STD-3009
• Incorporates precision motor - gearheads, potentiometers, ands interface controls
• Incorporates all stainless steel gearing components
• Line replaceable unit (LRU)

Application

• Round limiter switch for the F-22 Jet Fighter M61A2 30mm Gun system

Function

• Controls the number of rounds fired by the pilot

Features

• 6000 rounds capability
• 600 RPM maximum speed
• Anodized aluminum housing
• Incorporates plastic gearing

Lighted Panel and Switch Legends

• Compliance with MIL‐DTL‐7788 and NVIS (Night Vision Imaging System) MIL‐STD 3009
• Lighting options ‐ LED, Incandescent, and Electroluminescent

Panel Envelope

• Designed for DZUS rail compatibility and MS25212 compliance
• Thin profile and light weight design

Split Legend Lighting

• A combination of backlit legends, annunciated legends, and indicators can be incorporated into a single push button switch

Panel and Switch Annunciator Options

• Legend / Character
• Indicators
• Dead front, when in high ambient light conditions
• NVIS compatible and compliant
• Lighting methods – LED and incandescent

Custom or standard, multi‐feature potentiometers, rotary switches, encoders, toggle switches, pull switches, and push‐to‐talk switches

• Features – stops, detents, absolute / relative encoders, continuous turn, momentary push switch, illuminated knobs

Display Integration – LCD & LED

On‐board Electronics

• PWM (Pulse Width Modulation) for LED dimming control
• PLD (Programmable Logic Device) and A to D conversion for matching LED dimming to incandescent dimming
• Communications Protocol
• Communications Protocol – including ARNIC 429, RS‐232, RS‐422 and / or customer defined

Designed to meet Environmental and EMI requirements; including MIL‐STD‐810, MIL‐STD‐461, RTCA/DO‐160

Testing Capabilities

• Photometric – Luminance, contrast, chromaticity, uniformity
• NVIS – On‐site spectroradiometer for full NVIS compliant testing
• Dead front, when in high ambient light conditions
• First Article and Qualification testing – Bowmar has the ability to create test procedures, perform the tests, and submit comprehensive test reports

Customer – Hamilton Sundstrand

Where Used – Global Express Business Jets

Function – Human interface for the Cockpit Display Unit (CDU) for the aircraft Electrical Management System (EMS)

Features

• Integral AMLCD display
• Temperature screening of AMLCD display
• Power regulation for AMLCD and panel electronics
• Customer specified communications protocol
• EMI shielding for RTCA/DO-160 compliance

Customer – Curtiss Wright ‐ Novatronics

Where Used – Pratt & Whitney PW100 series turboprop engine

Function – Rotary actuator for valve control on fuel metering system

• Open and closes fuel delivery valve
• Reduces speed of customer stepper motor

Features

• AGMA gear quality class, Q12
• Size 11, 1.0655” diameter
• Backlash, 45 minutes
• Gear ratio, 25.14:1
• Operating temperature ‐54°C to +125°C
• Weight, 80 grams
• Ball bearings, 440 stainless

Customer – Curtiss Wright

Where Used – 787 Dreamliner

Application – Used in the High Lift Actuation System (flaps and slats)

Function – Connects to a Rotational Voltage Differential Transformer (RVDT)

Features

• Allows RVDT to accurately measure angular and rotary position greater than +/‐ 40 degrees
• Withstands harsh environment
• Mean Time Between Failure greater than 500,000 hours

Customer – Rockwell Collins

Where Used – KC‐135

Function ‐ Primary operator interface for flight director systems

• Provides operator interface to mission computer for various flight director modes selected by the flight crew for given phases of flight

Features

• Split Legend buttons and lighting
  • Dead Front / Sunlight Readable
  • LED lighting
  • NVIS Compliant to MIL‐STD‐3009
• Sealed low profile momentary push button switches
• Custom relative rotary encoder
• Internal Programmable Logic Device (PLD) provides Pulse Width Modulation (PWM) for LED dimming (matching aircraft incandescent lighting curve)
• Qualified to RTCA / DO‐160F environmental and EMI requirements
• Communicates with aircraft data bus via ARINC 429

Customer – Honeywell

Where Used – F15/F16 Pratt & Whitney turbofan engines

Function – Rigging counter for the Convergent Exhaust Nozzle Control

Features

• Precision machining of a metal components, including gear hobbing
• Machined titanium plate and torlon bushings (extreme heat resistance)
• Finishing: passivate and anodize
• Engraved counter wheel characters (extreme heat resistance)

Compliance

• Operating temperature, ‐55°C to +400°C