ITVV Presentationon

Communication system of HS-748

Guided By:Mrs. Shweta TripathiAsst. Professor,DR AITH Kanpur

Presented By:Jayant Paul1316630018EL-Final Year

Dept. of Electronics Engineering 2016-17

Contents- Abstract Introduction History of HAL and HAL Kanpur Basic Structure of HS748(AVRO) Communication System Devices Used in HS-748(AVRO) Conclusion References

Abstract:

Hindustan Aeronautics Limited(HAL),Kanpur is an government sector works on Aviation techniques. Aviation techniques basically comprises Fighter planes, Transport aircraft etc.

The HS-748(AVRO) is a transport aircraft which have only for Defence sector. The communication system of HS-748(AVRO) consist some basic parts and components i.e. Internal and External communication and so on.

Introduction:

The “Hawker Siddeley HS 748” is a medium-sized turboprop airliner originally designed by the British firm Avro in the late 1950s as a replacement for the now-aged DC-3s then in widespread service as feeder liners.

380 aircraft were built by Hawker Siddeley till now. HS-748 aircraft was started from 1980 for Indian Air Force.45

aircraft have been overhauled till March 96. HS-748 is a 40+2+2 seater medium haul turboprop passenger a/c, at

present repairing & overhauling of these a/c’s are going on.

Introduction Cont…

Communication part of HS-748(AVRO) consists some basic parts i.e. Internal and External part of AVRO.

Communication system quite different by basic AVRO’S. Communication system of HS-748(AVRO) in Internal and

External have also some parts and components which we will discuss on at Communication system of HS-748(AVRO).

HS-748(AVRO):

History of HAL : Late “Walchand Hirachand” at Bangalore set up “Hindustan Aircraft

Limited” in December 1940 in association with the Government of Mysore as a private Limited Company.

In June 1942 the Govt. of India took over the Management of the company.

“HINDUSTAN AERONAUTICS LIMITED” is a leading aerospace company of India engaged in Design, Manufacturing and Overhaul of a variety of Aviation Products from Basic Trainer Aircraft to highly sophisticated Fighters, Bombers, Helicopters, Transport aircraft, their power plants, avionics, system accessories and other aerospace products.

Divisions of HAL :

Products of HAL :

1. Fighter Aircraft

*Su-30 MKI *Mig Series *Tejas *Jaguar *MIRAGE -2000

2. Passenger Aircraft

*Dornier *Indian Regional Jet

3. Gliders

*HAL G-1 *Ardhra

4. Light trainer Aircraft *Kiran *Basant *Sitara

5. Helicopters

*Dhruv *Cheetah *Chetak *Advanced Light Helicopters

6. Satelite launch vehicles

*PSLV *GSLV *IRS *INSAT

About HAL Kanpur : Kanpur division of HAL is now known as Transport Aircraft Division

(TAD). HAL TAD specializes in manufacture and overhaul of medium and light

category Turboprop Aircraft. TAD Kanpur has developed extensive facilities for repair, overhaul and

modification of the aircraft. Over the year it has vastly developed its capabilities and is today considered

a pioneer in the field of manufacture and overhaul of transport category aircraft in the country. The plant accommodates 73500 sq. meters and the total strength of Kanpur division employees are 2200.

Mission of HAL :

“ To become globally competitive aerospace industry while working as an instrument for achieving self reliance in design manufacture & maintenance of aerospace defense equipment's and diversifying to related areas, managing the business on commercial lines in a climate of growing professional competence”.

Basic structure of HS-748(AVRO) :

General Characteristics : Crew: Three (two pilots + one passenger attendant) Capacity: 40–58 passengers Payload: 5,136 kg Length:  20.42 m Wingspan: 31.23 m Height:  7.57 m Wing area:  77 m² Empty Weight: 12,327 kg Max. Takeoff weight:  21,092 kg

Wingspan: 31 m Length: 20 m First Flight: June 24, 1960 Engine Type: Turboprop Manufacturers: Hindustan Aeronautics Limited,  Hawker

Siddeley.

Communication System:Block diagram of HS-748 is -

Communication System

Internal Communicatio

n System

Intercom System

Public address System

External Communicatio

n System

VHF HF

Communication system of HS-748(AVRO) comprises 2 parts i.e. Internal communication and External communication.

Basically the Internal communication System and External communication system also have 2-2 parts.

Internal communication system parts is Intercom System and Public address system.

External communication system parts is VHF and HF. VHF system uses the line of sight propagation technique.

Block diagram of Internal com. System:

Pilot

NavigatorCo-Pilot

Pilot Passengers

Intercom System Public Address System

Devices used in HS-748(AVRO) : VHF Transceivers (COM-104A) :VHF transceivers (COM-

104A) is a remotely mounted airborne VHF communication set. This transceiver provides amplitude modulated wireless communication in the frequency range 118.000 MHz to 135.975 MHz

Technical Specs. : *Frequency range : 118.000 MHz to 135.975 MHz *Channel spacing : 25 KHz *Total No. of channels available : 720 *No. of present channels : 4 *Range : Air to ground two way communications can be had *For a distance of 220 Km over radio horizon ranges. *Supply voltages : 27.5 DC nominal

UHF Transceivers (COM-150A) :COM-150A is an airborne UHF communication transceivers. It belongs to new generation state art with complete solid state technology. The function of the equipment is to provide two way communications on AM (Radio Telephone) in the frequency range 225.000 MHz to 339.335 MHz in 25 KHz increment.

V/UHF Transceivers (VUC 201A) : VUC-201A provides radio frequency reception and transmission of amplitude modulation (AM) signals on any of 2240 channels in the 100 to 155.975 MHz of very high frequency (VHF) band or 7000 channels in the 225 to 399.975 MHz of ultra high frequency (UHF) band in 25 KHz increment. Technical Specs. : *Frequency Range : 100-155.975 MHz (VHF) *Channel spacing : 25 KHz *Modulation technique : Amplitude modulation *Guard band : 238-248 MHz *No. of present channels : 20 *Range :air to ground and air to air two way communication.

Conclusion :

HS-748(AVRO) is a transport aircraft which is used by defence. It can carry maximum load as well as high speed.

HS-748(AVRO) is most usable transport aircraft that is used by Indian Air force.

It is most low expense Aircraft.

References:

https://en.wikipedia.org/wiki/Hawker_Siddeley_HS_748 https://en.wikipedia.org/wiki/Hindustan_Aeronautics_Limited https://en.wikipedia.org/wiki/Very_high_frequency http://www.wikiwand.com/en/Hawker_Siddeley_HS_748 http://www.airliners.net/aircraft-data/hawker-siddeley-hs-748/57