By definition, a fluid is any substance that is able to flow if it is not in some way confined or restricted. Liquids and gases are both classified as fluids, and often act in a very similar way. One significant difference comes into play when a force is applied to these fluids. In this case, … Read more
The simple structure of gases makes them readily adaptable to mathematical analysis from which has evolved a detailed theory of the behavior of gases. This is called the kinetic theory of gases. The theory assumes that a body of gas is composed of identical molecules which behave like minute elastic spheres, spaced relatively far apart … Read more
Many aircraft structures are made of metal, and the most insidious form of damage to those structures is corrosion. From the moment the metal is manufactured, it must be protected from the deleterious effects of the environment that surrounds it. This protection can be the introduction of certain elements into the base metal, creating a … Read more
Pressure is the amount of force acting on a specific amount of surface area. The force is typically measured in pounds and the surface area in square inches, making the units of pressure pounds per square inch or psi. If a 100-lb weight was placed on top of a block with a surface area of … Read more
Physical science, commonly known as physics, plays a vital role in aviation and aerospace technology. Many of the systems and operations found in aircraft—from engines and propulsion systems to flight performance and aerodynamics—are governed by the basic laws of physics. Understanding these principles helps explain how aircraft generate thrust, overcome drag, and maintain controlled flight. … Read more
Inspections are visual examinations and manual checks to determine the condition of an aircraft or component. An aircraft inspection can range from a casual walk around to a detailed inspection involving complete disassembly and the use of complex inspection aids. An inspection system consists of several processes, including reports made by mechanics, the pilot, or … Read more
Aircraft fluid systems rely on a network of tubing, hoses, and fittings to safely transport liquids and gases throughout the aircraft. These systems carry essential fluids such as fuel, oil, hydraulic fluid, coolant, oxygen, and instrument pressure lines. Proper installation and maintenance of fluid lines are critical to ensure reliable operation of aircraft systems. Fluid … Read more
Heat is a form of energy. It is produced only by the conversion of one of the other forms of energy. Heat may also be defined as the total kinetic energy of the molecules of any substance. Some forms of energy which can be converted into heat energy are as follows: Mechanical Energy—this includes all … Read more
The weight of an aircraft and its balance are extremely important for operating in a safe and efficient manner. When a manufacturer designs an aircraft and the Federal Aviation Administration (FAA) certifies it, the specifications identify the aircraft’s maximum weight and the limits within which it must balance. The weight and balance system commonly employed … Read more
The study of the relationship between the motion of bodies or objects and the forces acting on them is often called the study of “force and motion.” In a more specific sense, the relationship between velocity, acceleration, and distance is known as kinematics. Uniform Motion Motion may be defined as a continuing change of position … Read more
Aviation Knowledge & Technical Study
Aero Guide provides structured aviation study materials, technical explanations, and educational resources based on FAA handbooks and other aviation references. Explore aviation fundamentals, aircraft systems, airframe structures, powerplant systems, weight and balance, and more to support your aviation learning journey.
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