What is a consequence of using undiluted propylene glycol at low temperatures?

Using undiluted propylene glycol at low temperatures can lead to reduced lift. Propylene glycol is commonly used as an anti-icing agent, particularly in aviation and other fields that require de-icing of surfaces. When used undiluted, it can create a denser fluid, which might not adequately perform its intended purpose at low temperatures. The fluid can become thick and viscous, leading to improper flow characteristics. This can hinder the ability of the aircraft to maintain sufficient lift, especially if it accumulates on critical surfaces like the wings or control surfaces, which is essential for a safe takeoff and flight.

In practical terms, if the propylene glycol does not function effectively as an anti-icing agent, it may result in ice formation on the airframe, further creating issues with lift generation. Therefore, understanding the implications of using propylene glycol in its undiluted state at lower temperatures is crucial for flight safety and operational efficiency.