What explosive pressure can be created from evaporation and expansion of LOX in a confined space?

The correct answer indicates that the explosive pressure created from the evaporation and expansion of liquid oxygen (LOX) in a confined space can reach up to 12,000 psi. This high pressure results from the significant volume change that occurs when LOX evaporates. Liquid oxygen is stored at very low temperatures as a liquid and takes up much less space in this state compared to when it transitions to a gaseous state.

As LOX is confined in a space, the rapid conversion from liquid to gas can lead to an enormous increase in pressure. The expansion ratio of LOX as it turns into gas is around 860:1, meaning that a small amount of liquid can create a large volume of gas. In a confined environment, where this gas has no outlet, such a substantial increase in pressure poses a serious risk of explosion or rupture, hence the importance of maintaining proper safety measures when handling LOX.

Understanding the ramifications of LOX characteristics—like explosive pressure in confined spaces—is crucial for ensuring safety in aviation maintenance and operations, particularly for aircraft like the Super Hornet, where LOX may be utilized.