Recent advances in electrical motors, energy storage systems, and power electronics converters (PEC) are leading to aircraft becoming increasingly electrical. However, hybrid technologies are also a viable option for greener air travel. These hybrid engines convert several power sources to the relevant system of the aircraft, adjusting power supply to actual needs during flight. This makes power converters in hybrid engines a critical part, and their efficiency of utmost importance.
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Sealing Protection For EVTOL Propeller Bearings
Category
Critical Applications
3 min
Description
In the past decade or so, there has been considerable progress in electric storage and motor technology, which are on the verge of moving the aviation industry ahead and opening new opportunities and uses. One example is the eVTOL (Electric Vertical Take-Off and Landing vehicle), where electric engines reduce noise pollution for quieter flights and provide zero emissions to help the environment.
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Compressor Variable Stator Vane Bushings
Category
Critical Applications
2 min
Description
At different speed regimes in the jet engine, the airflow in the compressor is regulated by variable stator vanes (VSV), which are generally located at the initial stages of the high pressure compressor. This area experiences relatively high pressure and high temperature that progressively increases with modern engine performances.
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Helicopter Main Rotor Swashplate
Category
Critical Applications
3 min
Description
Flying a helicopter in an unpredictable and changing environment such as the desert or above the sea can lead to the accumulation of several kinds of potential aggressive contaminants, which are not clearly visibly on the bearings of the main shaft of a helicopter rotor. These damaging substances may cause jamming, ultimately leading to crash. The sealing of the swashplate is critical as it protects this aviation equipment from dust, sand, and debris.
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Air Operated Double Diaphragm Pump
Category
Precision Machining
2 min
Description
Most businesses rely on Air Operated Double Diaphragm (AODD) pumps as they tend to be general workhorse devices used in transfer applications. They are used in a wide range of industries to handle different materials such as chemicals, crude oil, mining, food, beverage, paints and many more. These pumps use reciprocating diaphragms to pump fluid. Since AODD pumps are essentially leak-free, having only stationary seals between the wetted parts and outside environment, leakage can only occur if the diaphragms fail.
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Helicopter Main Gearbox
Category
Leakage Requirement
3 min
Description
How would a helicopter main gearbox (MGB) successfully function without the proper sealing solution? Rotary lip seals are widely used to seal the oil lubricant within the gearbox and protect it from leaking out at where the shaft enters and exits the gearbox. The main gearbox, also known as a transmission, is a critical part in a helicopter’s airworthiness and safety because it is responsible for reducing high input speed generated from engines and providing appropriate torque to main rotors and other accessory systems.
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