Technical Resources
Explore expert engineering insights, MIL-SPEC thermal management strategies, and SWaP-C optimization notes for mission-critical defense and aerospace applications.
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Cooling Fan Failure Modes
Technical Notes • 8 min read
Common Cooling Fan Failure Modes: Root Causes and Corrective Actions
A practical guide to cooling fan failure modes in defense and aerospace electronics, covering electrical, motor, bearing, impeller, wiring, and installation causes.
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28VDC BLDC Fan
Technical Notes • 8 min
How to Evaluate a 28VDC Avionics Cooling Fan: Operating-Point Comparison Method
A repeatable method for evaluating a 28VDC avionics cooling fan against an AMETEK Rotron Aximax reference using P-Q curves, interface checks, and fixture testing.
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P-Q Curves
Technical Notes • 7 min
How to Read P-Q Curves for Military Cooling Fan Selection
How to read fan P-Q curves for military electronics cooling, including system impedance, static pressure, operating point selection, and common selection risks.
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Military Cooling Fans
Technical Notes • 7 min
Military Cooling Fan Selection Guide for Defense Electronics
Select military cooling fans by installed airflow, system impedance, axial or centrifugal configuration, power interface, and project-specific environmental requirements.
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Eurosatory 2026
Insights • 5 min
Eurosatory 2026 Takeaways: What Defense Electronics Teams Asked About Cooling
Eurosatory 2026 took place at Paris Nord Villepinte from June 15 to June 19, bringing together the land and air-land defense community for one of the industry’s most focused weeks of the year. Perseus was present at Hall 5B, stand AB33, where the conversations around cooling were direct, practical, and often tied to real integration problems rather than general product browsing.That is the useful part of an exhibition like Eurosatory. It does not replace engineering review, and it does not turn a booth conversation into a project by itself. What it does well is reveal where customer questions are moving. This year, many of those questions were not simply about whether a fan could move enough air. They were about how cooling behaves once it is installed inside a constrained, vibrating, dusty, electrically sensitive defense system.
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Form-Fit-Function
Insights • 8 min
Form-Fit-Function Replacement for Obsolete Military Cooling Fans
Military cooling fan FFF replacement requires more than matching frame size and voltage. This insight explains how engineers should compare mechanical fit, electrical interface, P-Q curves, acoustic behavior, EMC risk, environmental evidence, and documentation before approving an obsolete fan replacement.
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Altitude Derating
Technical Notes • 8 min
Altitude Derating in UAV and Avionics Cooling Fan Selection
Avionics cooling fan altitude derating must be considered before UAV payload or airborne radar fan selection. This technical note explains air density, mass flow, P-Q curve review, and MIL-STD-810H Method 500.6 context for defense cooling engineers.
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28VDC BLDC Fan
Technical Notes • 8 min
28VDC BLDC Fan Control and Electrical Protection for Avionics Cooling
28VDC BLDC fan avionics cooling requires early review of PWM control, FG feedback, locked-rotor protection, reverse-polarity protection, and transient tolerance. This technical note explains the interface decisions engineers should resolve before defense electronics design freeze.
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DSA 2026
Insights •
Perseus Electronics at SAHA EXPO 2026: Exhibiting in Istanbul with Same Elektronik
SAHA EXPO 2026 took place from May 5 to 9 at the Istanbul Expo Center in Istanbul, Turkey. The exhibition is held on a two-year cycle and has established itself as one of the leading defense, aerospace, and space industry exhibitions in the region. For Perseus Electronics, this edition of SAHA marked our participation on the Istanbul show floor as a joint exhibitor with our Turkish distribution partner, Same Elektronik. Our booth number was 8L-16.
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Technical Notes
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FAQ
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