7.4 - Hydraulic and Pneumatic Systems

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Embry-Riddle Aeronautical University *

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270

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Mechanical Engineering

Date

Nov 24, 2024

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docx

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Uploaded by CountHyenaPerson312

1 From what I researched, there are two types of systems, hydraulic and pneumatic systems. At first hydraulics were only utilized as a brake system for many aircrafts. However, when aircraft becomes larger and faster, the use of hydraulic system were introduced to assists the pilot to overcome high control forces. Now many modern aircrafts currently uses hydraulic system since it used to control many sort of equipment on the aircraft such as brakes, flaps, flight controls and landing gear. I was rather surprised there are many different uses for hydraulics while under the assumption that is only used for landing an aircraft and help supporting its weight, rather than its multitude use it have. Advantages of using a hydraulic system is that it have great accuracy, withstand a lot of weight and provides constant force. However the disadvantage of using this system is that it is hazardous, it can cause health issues, injuries, corrosive and in some cases are also flammable, making it difficult to maintain. The pneumatic system are similar to hydraulics, but they use air instead of liquid. Their sue in the aviation industry is for brakes, opening and closing doors, driving pumps and operating emergency devices. The advantages of the pneumatic system is it is light weight, and having a simple design, making it easy to maintain and operate. However, it is not precise and doesn't transmit pressure as easy as fluid. It's not suitable for large aircrafts as well. References Aviation Hydraulics and Landing Gear https://www.spartan.edu/news/facts-you-should-know-about-aviation- hydraulics-and-landing-gear/#:~:text=Generally%20speaking%2C

2 %20hydraulic%20systems%20are,in%20movement%2C%20unlike %20pneumatic%20systems Links to an external site. . Advantage and Disadvantage of Hydraulic Systems https://sciencing.com/list-7425341-hydraulic-system- disadvantages.html Links to an external site. Hydraulic system https://skybrary.aero/articles/hydraulic-systems Links to an external site. Pneumatic System https://www.experimentalaircraft.info/articles/pneumatic- systems.php Links to an external site.

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