Capabilities

Test Capabilities 
For over 60 years Rotron has maintained its position as an industry leader in providing custom solutions meeting the most stringent performance and environmental specifications such as shock, vibration, humidity, temperature extremes, salt spray, moisture and EMI, for military and aerospace applications.

Rotron’s Product Engineering department consists of a dedicated staff of engineers with expertise in Aerodynamics, Electro-Mechanical and Electronic Drive design. When required, our Product Engineers will provide custom solutions by modifying existing products or developing new product designs, utilizing state of the art technology and over 60 years experience in the industry.

Designed to meet specific specifications for military and aerospace applications:
  • Airflow
  • Environmental
  • Acoustic Measurement
  • EMI
  • Full Prototype Capability

Performance Testing
Airflow
Two Airflow Test Chambers
High limits

  • Up to 50” water gauge pressure
  • 3,000 CFM maximum air flow

Control electrical input

  • Voltage
  • Capacitance
  • Phase
Testing capabilities
  • Current consumption
  • RPM
  • Internal stator temperature
  • Pressure
  • Air flow
Air Moving Control Association – (AMCA) STD 210
Low Pressure: 5 psig @ 3600 CFM
High Pressure: 50 psig @ 500 CFM
Low Flow/High Temp: 130 CFM @ 1350ºF
High Flow/High Temp: 4000 CFM @ 200ºF

Fluid Flow
Fluid Types:
  • Engine Lubricant Oil
  • Hydraulic Oil
  • PAO Dielectric Coolant
  • JP-8 Fuel
Fluid Rates
  • MIL-L-23699: 8 to 40 GPM @ 375ºF
  • MIL-H-83282: 20 GPM @ 350ºF
  • MIL-C-70274: 12 GPM @ -50ºF to 200ºF
  • MIL-T-83133A: 135 GPM @ 250ºF
Heat Transfer
  • Air – Liquid side (BTUH)
  • Air – Liquid side (PSID)
Life Test
Products able to survive for long periods of time in elevated temperatures
Results are mathematically analyzed and plotted on a Weibull distribution curve
Life test can be expressed in either MTBF or L-10
Typically samples of 3-10 units per product
Measured at 3 temperatures: 50°, 72°, and 100° C


Environmental Testing
Vibration (MIL-STD-810)
Ling Electronics B340 Shaker, water and oil cooled, with amplifiers.
Electrodynamic shaker with slip table
2” displacement
Random and sinusoidal vibration
Sine: 30,000 lbf.
Max. Random: 23,500 lbf. Max.
Frequency: 4-2000 Hz

Shock (MIL-STD-202)
100G’s @ 11mSec pulse width maximum with half sine, sawtooth or trapezoidal profile
MIL-STD-202 Method 213 typical (2000 G’s)
Thermal Shock: -60°C to 150°C, 1.5 ft3

Salt Spray (RTCA DO160)
Per. MIL-STD-810 & RTCA DO160 95°F/35°C
Various salt solution percentages

Containment
Fan blade separation to FAR 29.1461
Fan diameters of 10 inches
Tests whether fan case will contain prop upon disconnect
Fan propeller is cut/scored
Fan is accelerated past normal operating speeds
Vacuum created in test chamber

Thermal Cycling Chambers - 3 Units
Tests units ability to operate during extreme temperature changes
Temperature: -60ºF to 400°F, Envelop: 38”x39”x42”
Temperature: 400ºF, Max, Envelop: 38”x39”x36”
Temperature: 500ºF, Max, Envelop: 25”x20”x20”
Chamber provides HEAT, HUMIDITY, and REFRIGERATION
Used for production purposes (more units tested simultaneously)

Humidity / Thermal Cycle
15% - 100% Humidity
Temperature range of 0°C to 100°C
Tests units ability to operate during extreme temperature changes

Altitude / Temperature
Simultaneous altitude/temperature test
Altitudes range from sea-level to 60,000 ft
Temperatures range from 0 to +100° C
Maximum pull down rate of 10° C per minute 

Acoustic Measurement Lab
ANSI S12.11-1987 qualified reverberation room

Measurement Capabilities
Full octave or 1/3 octave bands
Sound power level
Sound pressure (typically 3 feet from source)
Fast Fourier Transform

Test to ISO-3741 sound power comparison method
Results mathematically combined to provide single figure for comparison (dBA)
Contact Applications Engineers for dBA levels of any fan

EMI Testing Facility
Mil-Sty-461 / RTCA DO-160 Specifications
On site EMI testing for conducted and radiated emissions
Wide range of testing

  • Conducted/radiated emissions
  • Extreme range of frequencies
  • Test chamber equipped with copper shielding to eliminate external interference

We also maintain necessary current probes, antenna's & LISN's to provide testing to Military standard Mil-STD-461 & Commercial Aircraft standard DO160

Prototype Testing 
Equipped for wide range of testing within the group

  • Electrical
  • Mechanical
Final testing for Prototype units
Coordinate with other testing groups to perform other testing needs