40-60% Rh
Aerospace Manufacturing
Stable humidity protects high-value materials, electronics, and finishes in low-tolerance aerospace production.
Overview
Aerospace production environments typically require 40–60% RH to protect composites, electronics, and coatings, and to prevent electrostatic discharge (ESD).
Humidity
Why humidity control is essential
Composite layup & bonding
- Resin systems are highly sensitive to moisture; incorrect RH causes dimensional instability and curing defects.
Electronics & avionics assembly
- Low humidity increases ESD risk, damaging sensitive components.
Coatings, sealants, welding
- Incorrect RH leads to poor adhesion, brittle finishes, and premature failure
Cleanrooms
- Require tight humidity control to prevent static buildup and contamination. Typical RH requirements by zone
Humidity
Typical RH requirements by zone
| Manufacturing Zone | Required RH | Reason |
|---|---|---|
|
Cleanrooms |
40–60% |
Prevent ESD, protect electronics |
|
Composite layup |
Stable RH (≈40–60%) |
Resin consistency, dimensional
stability |
|
Coating/painting |
Controlled RH |
Avoid defects, ensure finish quality |
|
Electronics assembly |
40–60% |
Reduce ESD, improve soldering quality |
Humidity
Why Humidity Control Is
Challenging in Aerospace
Large, multi-zone plants with different humidity needs
Standard HVAC systems are not designed for precise moisture control
