Skydrol is a common example of which type of hydraulic fluid?

Skydrol is a common example of which type of hydraulic fluid?

• A. Phosphate-ester-base synthetic
• B. Mineral-base
• C. Water-based
• D. Silicone-based

Answer: (A)

Skydrol is a phosphate-ester-based synthetic hydraulic fluid. This type is chosen for aviation because it provides high fire resistance, a high flash point, and excellent stability across a wide temperature range, which is crucial in aircraft hydraulic systems where leaks near hot components could ignite if flammable fluids were used. Its synthetic phosphate-ester composition also offers good dielectric properties, helping to isolate electrical components in the system. Mineral-base, water-based, and silicone-based fluids do not offer the same combination of fire resistance and high-temperature stability needed for aircraft applications, making the phosphate-ester synthetic category the correct match for Skydrol.

Skydrol is a phosphate-ester-based synthetic hydraulic fluid. This type is chosen for aviation because it provides high fire resistance, a high flash point, and excellent stability across a wide temperature range, which is crucial in aircraft hydraulic systems where leaks near hot components could ignite if flammable fluids were used. Its synthetic phosphate-ester composition also offers good dielectric properties, helping to isolate electrical components in the system. Mineral-base, water-based, and silicone-based fluids do not offer the same combination of fire resistance and high-temperature stability needed for aircraft applications, making the phosphate-ester synthetic category the correct match for Skydrol.