Air Speeds Repair And Replacing The Indicator

By Ruth Green


Typically, the indicators of airspeeds can be replaced with another which is being produced by another manufacturer, as long as it has the same range and type. However, prior to performing the replacement processes, some important things must need to be considered. Two of the most common types of indicators which are being used are the Aerosonic and the Kollsman.

These 2 are considered to have longer cases than other manufacturers. But there may be possible problems during the installation in some aircraft types. On typical indicators like Pitot, inputs will pass into the center in the back of an indicator while static inputs are placed into the right, when viewing it from rear. The air speeds repair is being done using the easy steps. However, it could also be possible to encounter complicated steps sometimes, depending on what problem is to be resolved.

The main purpose of airspeed indicator is for the pilots to use in all the phases of their flight. These would include when they climb, descent, land, take off, and cruise in order to maintain the airspeeds. These are specific to types of aircraft and the operating conditions specified in operating manuals.

During the instrument flight, the indicator is being used as added part of the artificial horizon like the reference instrument used for controlling the pitch in turns, climbs, and descents. It may be used as well in dead reckoning. It is where the bearing, time, and speed are going to be utilized for navigating having no aids of GPS, NBDs, and VORs.

Along with vertical speed indicators and with altimeters, airspeed indicators are members of Pitot static systems of the aviation instruments. The name corresponds to the operations through the measurement of pressure in static circuit and pilot. The indicators work through the differences between the static pressure and the stagnation pressure. The differences are referred to as impact pressure.

On the exterior of an aircraft is where static ports are the location, or the location chosen for detecting prevailing atmospheric pressure as accurate. While for other aircrafts, the static ports are located in both of the sides of fuselage or empennage in order to measure slips and skids. And for sure the result is providing more accurate information.

Airspeed indicators are available in many different variations and one of the most common is LRI or lift reserve indicator. This is a proposed alternative or proposed back up to ASI or airspeed indicator during critical flight stages. It is an elegant type of device and can be rarely found in a light aircraft and even in the transport jets. A conventional ASI has lesser sensitivity and accuracy as an airspeed diminishes. And thus, providing lesser reliable information to pilots during a stall.

The stall speed is varied depending on the conditions of the flight, specifically during gross weight changes and wing loading when maneuvering. The ASI does not have the capability of showing directly to the pilot how the stall is approached in maneuvering while the LRI will do. And thus, it becomes more descriptive and much easier for pilot use.

Attack angle and dynamic differential pressures are being used by and LRI for its operation. This can be very advantageous for low airspeeds because it is extremely accurate and fast acting. And thus, much reliable information can be provided.




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