What type of sprinkler system is most suitable for an airplane hangar?

A deluge system is the most suitable type of sprinkler system for an airplane hangar due to the specific fire protection needs and associated hazards inherent in such environments. Deluge systems are characterized by open nozzles that release large amounts of water when activated, typically through a heat-sensitive detector or manual pull station.

Airplane hangars often contain highly flammable materials, including fuels and chemicals, and can house multiple aircraft. The open design of the deluge system allows for immediate and extensive coverage, enabling rapid suppression of large, fast-spreading fires. This is particularly important in a hangar setting where the fire load can be significant due to the presence of aviation fuel, oils, and various combustible materials.

Other sprinkler systems may not provide the same level of efficiency. For example, wet pipe systems may be less effective in unheated spaces where temperatures could drop below freezing, potentially leading to pipe bursts. Dry pipe systems, while beneficial in unheated areas, can be slower to respond due to the delay in filling the pipes with water before discharge. Pre-action systems add another layer of control but may be too complex and slower in response for the types of immediate threats present in hangar environments.

Overall, the deluge system's ability to deliver