The diffuser is one of the important components which directly influence engine performance and its effectiveness. The function of this system is to reduce the high-velocity air from the compressor in order to obtain the desired control of air entering the combustion section. This controlled airflow is essential for maintaining stable combustion and preventing flame … Read more
Pre-flight Checks The following checklist should be performed for all pre-flight checks. Repair, as necessary, all discrepancies and shortcoming before flight. Verify ignition OFF. Check fuel content. Inspect for coolant leaks. Verify oil tank content (oil injection engines). Verify spark plug connectors for security. Inspect engine and gearbox for oil leaks. Inspect engine and gearbox … Read more
Turbine engine discrepancies can be either obvious or hidden. Hidden problems, when not detected and corrected, often cause major problems with continued engine operations. Hidden troubles are detected by continuously monitoring engine operating parameters, comparing them over time to detect subtle changes that indicate wear and transient problems. By analyzing engine trends and consulting the … Read more
Some of the most important factors affecting turbine engine life are EGT, engine cycles (a cycle is generally a takeoff and landing) and engine speed. Excess EGT of a few degrees reduces turbine component life. Low EGT materially reduces turbine engine efficiency and thrust. So, to make the engine highly efficient, the exhaust temperatures need … Read more
General Maintenance Practices for the Light-Sport Jabiru Engines NOTE: Some specific maintenance practices that differ from conventional certified engines is covered for background and educational acquaintance purposes only. Always refer to the current manufacturer’s information when performing maintenance on any engine. Engine and Engine Compartment Inspection Check for oil, fuel exhaust, and induction leaks and … Read more
Oil Level Check Always allow engine to cool down to ambient temperature before starting any work on the lubrication system. Severe burns and scalds may result from hot oil coming into contact with the skin. Switch off ignition and remove ignition key. To assure that the engine does not turn by the starter, disconnect the … Read more
All stated checks are visual inspections for damage and wear, unless otherwise stated. All listed work must be carried out within the specified period. For the intervals between maintenance work, a tolerance of + or – 0 hour is permissible, but these tolerances must not be exceeded. This means that if a 100 hour check … Read more
Given they meet all applicable regulations, the holder of a powerplant certificate can perform maintenance and inspections on light-sport engines. The holder of a sport pilot certificate may perform preventive maintenance on an aircraft owned or operated by that pilot and issued a special airworthiness certificate in the light-sport category under the provisions of 14 … Read more
Engines used for light-sport aircraft and other types of aircraft, such as some experimental aircraft, ultralight aircraft, and powered parachutes, must be very light for the power they develop. Each aircraft requires thrust to provide enough forward speed for the wings to provide lift to overcome the weight of the aircraft. An aircraft that meets … Read more
The intense heat generated when fuel and air are burned necessitates that some means of cooling be provided for all internal combustion engines. Reciprocating engines are cooled either by passing air over fins attached to the cylinders or by passing a liquid coolant through jackets that surround the cylinders. The cooling problem is made easier … Read more
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