Development of Control Card And digital Test RigFor An Aircraft

PRESENTED BYRAJESH KUMAR

SECTION –RE38T1A03REGDNO.10801729

IntroductionThe Kiran MK-II aircraft is used for Jet aircraft

training by Indian Air Force and Indian Navy.18 nos. of 68 mm rockets are fitted in rocket pods on

both wings of aircraft.Solid State Distributor (SSD) unit is used for

controlling the rate of firing and provides the short circuit and open circuit protection.

SSD unit is unserviceable for a long time.SSD unit was designed by ADE, Banglore and

manufactured by Integral Systems, Bangalore in 1985.

Objective: To design and develop the new Control card PCB for Solid State Distributor unit of rocket pod of the Kiran MK-II aircraft and associated Test Rig.

Scope of work:

Design and Development of the PCB for solid state distributor.

Development of the Test Jig.

Environmental Testing.

Ground and Flight trials.

Photographs of SSD unit…

SSD UnitThis is a solid state unit capable of firing rockets

in controlled salvos of 1,3,6,9 and 18.

The time interval between firing of two consecutive rockets in any salvo is kept constant at 33+3 msec

Firing rate is 1600 rocket/minute.

This distributor is provided with protection against open circuited and short circuited rockets in the pod without affecting the sequence of firing.

Technical Specification of Control Card…

Power Supply 

Input Output

Open Circuit Protection

Short Circuit Protection

Proposed Technology

Block diagram

Input

Power Supply

Current Sensing

Microcontroller

Relay and Firing

1 3 6 9 18

Selector Switch

Firing Signal from Pilot Panel

Supply 27V +ve from Pilot 27V -ve Panel

5V

27 V

27 V

Rocket Squibs

1 - -

18

VOLTAGE SENSE (0-35 V)

Proposed Technology

Calculation for sensing Voltage 10 bit = 2¹º=1024 steps Vref=5v Value of 1 step =5/1024 volt One step increase of

ADCH=4*5/1024 volt =20*1000/1024

=20000/1024 mv =20000*6/1024 =117.1875 mv =117.1875*256 =30,000mv

THANK YOU