Which type of accumulators is commonly used for storing hydraulic energy?

Bladder accumulators are commonly used for storing hydraulic energy due to their design and functionality, which allows them to effectively absorb energy and accommodate variations in hydraulic system pressure. These accumulators contain a flexible bladder that separates the hydraulic fluid from a gas (often nitrogen), enabling them to store energy by compressing the gas as fluid is pumped into the accumulator. This system is efficient in managing pressure fluctuations and can quickly release stored energy when demand increases, making bladder accumulators highly valued in aviation and other hydraulic applications.

The other types of accumulators mentioned, such as weight, spring, and bucket accumulators, serve different purposes or are less efficient for hydraulic energy storage. Weight accumulators, for instance, rely on the gravitational pull of weights, which isn't practical in all applications, particularly in aviation. Spring accumulators use a spring mechanism to store energy but may not provide the same responsiveness and pressure control as bladder accumulators. Bucket accumulators are typically irrelevant in the context of hydraulic energy storage, as they do not align with the principles of hydraulic systems in use. This makes bladder accumulators the preferred choice for effectively managing hydraulic energy in various applications.