UNIT 14THE ESSENTIAL TYPES OF AVIONIC EQUIPMENT

AIMS OF THE UNIT:- to understand what avionics is

-to describe pitot/static systems

TASKS

1 Do your best to answer the brainstorming questions. 2 Read the text for general understanding.

3 Make up questions to the text. 4 Find the sentences with the new words in the text. Give the Kazakh or Russian

equivalents of the words.

5 Write sentences with the new vocabulary. 6 Do the given exercisesfor better remembering the topic.7 Study grammar point:find the passive sentences in the text.

8 Speak on the topic. Given schemes and questions will help you to remember and

understand the topic.

9 Find more information about the topic. Do some research, create slideshow or a

project work and present them.

Brainstorming questions

1What is avionics?

2 What isthe most essential for all types of aircrafts?

TEXT A

Avionics is a large class of an aircraft systems, consisting of communicational, navigational, display, flight management, indicating, radar, electrical and etc. equipment. Avionic systems are the most essential for all types of aircrafts. They had been used for a long time and even nowadays they are still in use.

Air data instruments utilizing pitot and static pressuresinclude standby altimeter/air speed indicator, Delta "P" indicator (cabin differential pressure indicator), and the two micro air data computers. Micro air data computers receive pitot/static pressures and total air temperature inputs for computing standard air data functions. These functions are made available, in digital format, to equipment requiring this information.

Pitot/static systems consist of pitot tubes (heads), static ports, static moisture drain valves, tubing, hoses and fittings. Routing of the pitot/static lines is accomplished utilizing clamps to secure the tubing to the structure. Flex hoses are installed between tubing and the operating components or instruments. Model 750 has three independent pitot systems and three independent static systems.

Left (pilot's) static system provides static pressure to left air data computer, right (copilot's) static system provides static pressure to the right air data computer, and the standby static system provides static pressure to the standby altimeter/airspeed indicator, and cabin delta "P" indicator (differential pressure indicator). Pilot and copilot's pitot tubes are symmetrically, located on the nose of airplane. The standby pitot tube is located below the copilot's side window. Pitot tubes are separated and positioned to provide total pressure input and minimize possibility of total pitot loss due to birdstrike.

Each static system has two static ports. One static port is on the left side and one is on the right side of the airplane. Interconnecting lines connect the left static port with the right static port and to corresponding components/indicators. All three static ports, on each side, are located in one static port plate assembly.

Pilot's static system uses top static port in the left static port plate assembly and the bottom static port in the right static port plate assembly. Copilot's static system uses the bottom static port in the left static port plate assembly and the top static port in the right static port plate assembly.

Standby static system uses the aft static port in both static port plate assemblies. Static port plate assemblies are, located on the lower side of the fuselage, below the pilot's and copilot's side window.