𝐕𝐢𝐬𝐮𝐚𝐥 𝐀𝐩𝐩𝐫𝐨𝐚𝐜𝐡 𝐒𝐥𝐨𝐩𝐞 𝐈𝐧𝐝𝐢𝐜𝐚𝐭𝐨𝐫 (𝐕𝐀𝐒𝐈)

PAPI & VASI

🛩️The visual approach slope indicator (VASI) is a system of lights on the side of an airport runway threshold that provides visual descent guidance information during approach.

🛩️These lights may be visible from up to 8 kilometres (5.0 mi) during the day and up to 32 kilometres (20 mi) or more at night.

🛩️Basic visual approach slope indicators consist of one set of lights set up some 7 metres (23 ft) from the start of the runway.

🛩️Each light is designed so that it appears as either white or red, depending on the angle at which it is viewed.

🛩️When the pilot is approaching the lights at the proper angle, meaning the pilot is on the glide slope, the first set of lights appears white and the second set appears red.

🛩️When both sets appear white, the aircraft is too high, and when both appear red it is too low.

🛩️This used to be the most common type of visual approach slope indicator system.

🛩️however, it is being phased out and replaced by Precision approach path indicators(PAPIs), which are closer together and therefore more efficient to site and maintain.

➡️Subscribe us for more aircraft knowledge and aircraft fact⬅️

➡️Do Share with your Friends⬅️

Comments

𝗠𝗼𝗻𝗼𝗰𝗼𝗾𝘂𝗲 𝘃𝘀 𝗦𝗲𝗺𝗶-𝗺𝗼𝗻𝗼𝗰𝗼𝗾𝘂𝗲 𝗦𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲

🛫A monocoque structure uses its outer shell to support stresses and loads applied to it, whereas a semi-monocoque structure has an internal "skeleton" of supports and braces to keep its shape rigid and strong. 🛫The vast majority of pressurized aircraft are semimonocoque to help distribute stresses equally along the fuselage during flight. 🛫However, some helicopters use monocoque structure to maximize internal space in the flight compartment. 🛫Monocoque fuselage has its skin holding the skeleton structure together while the semi-monocoque has both the skin and the skeleton holding together. 🛫Semi-monocoque also has "stringers" running horizontally down the plane to help hold the frame together. 🛫The monocoque fuselage also cannot be used for airframes after a certain size (small aircraft with single engine), but the semi-monocoque has been used from single piston engines to commercial airliners. 🛫A monocoque design would also have ...

𝐓𝐲𝐩𝐞𝐬 𝐨𝐟 𝐂𝐨𝐦𝐛𝐮𝐬𝐭𝐢𝐨𝐧 𝐂𝐡𝐚𝐦𝐛𝐞𝐫𝐬

🛩️A combustor is a component or area of a gas turbine, ramjet, or scramjet engine where combustion takes place. It is also known as a burner, combustion chamber or flame holder. In a gas turbine engine, combustion chamber is fed high pressure air by the compression system. 🛩️The combustor then heats this air at constant pressure. After heating, air passes from the combustor through the nozzle guide vanes to the turbine. In the case of a ramjet or scramjet engines, the air is directly fed to the nozzle. 𝐀𝐧𝐧𝐮𝐥𝐚𝐫 𝐓𝐲𝐩𝐞 ✈️The most commonly used type of combustor is the fully annular combustor. Annular combustors do away with the separate combustion zones and simply have a continuous liner and casing in a ring. There are many advantages to annular combustors, including more uniform combustion, shorter size, lighter, and less surface area. Annular combustors tend to have very uniform exit temperatures. They also have the lowest pressure drop of the three...

𝟓 𝐌𝐚𝐣𝐨𝐫 𝐒𝐭𝐫𝐞𝐬𝐬

Five Major Stresses 🛩️Aircraft structural members are designed to carry a load or to resist stress. Aircraft parts must be planned to carry the load to be imposed upon it. 🛩️The term stress is often used interchangeably with the word “strain.” They are not the same thing. External loads or forces cause stress. Stress is a material’s internal resistance, or counterforce, that opposes deformation. The degree of deformation of a material is strain. When a material is subjected to a load or force, that material is deformed, regardless of how strong the material is or how light the load is. 🛩️Here 5 major stresses to which aircraft is subjected ✳️Tension ✳️Compression ✳️Torsion ✳️Shear ✳️Bending ✈️Tension is the stress that resists a force that tends to pull something apart. The engine pulls the aircraft forward, but air resistance tries to hold it back. The result is tension, which stretches the aircraft. The tensile strength of a material is measured in pounds per square inc...

The Aviation Science

Search This Blog