Introduction
Reaction control system (RCS) is an active Attitude and Orbit Control subsystem (AOCS) of Spacecraft and Missiles used for
Attitude control during re-entry
Station keeping of spacecraft
Close manoeuvring during docking
Also used for deorbiting
Applications
PSLV uses RCS in its fourth stage for pitch,yaw and roll control during coast phase
IRS CARTOSAT uses RCS for AOCS
RCS thrusters are used in International Space Station as backup and augmentation systems for primary attitude control
Apollo, Soyuz, Mercury,X-15, X-20 and Gemini space shuttles employ RCS
In Aircrafts like V/STOL fighters (YAV-8B Harrier)and NASA X1-B Research plane RCS is used
OBJECTIVE OF MISSILE RCS
In supersonic missiles, high maneuverability is not possible using aerodynamic control surfaces like wing, tail and canard control due to stall conditions. Hence Reaction Control Systems (RCS) are employed for high angle of attack maneuvering.
Working Principle
A secondary motor is added in missiles with RCS which makes use of 15% of the gas generated in the primary motor.
The secondary motor has the same pressure (~70×105N/m2) and temperature (~2000K) of that of primary motor. The secondary motor has a C-D nozzle which can produce thrust from 20 N to 120 N by varying the nozzle throat area using a plug.
The linear motion of a plug varies the throat area which is directly proportional to the thrust developed at the nozzle exit.
This plug is attached to a Ball and Screw mechanism which converts the rotary motion of a Brushless DC motor (BLDC) into micro precise linear motion.
The BLDC motor is driven by Pulse Width Modulated (PWM) signals generated by TMS320C6711 Digital Signal Processor (DSP).
Department of Aerospace Engineering
and light years to go before i sleep
We never measure distance in km or miles maybe Robert frost would. (1 light year = 9.4605284 × 10^15 meters)
PhD Missile guidance navigation and control - Study of destructive forces was once called black magic but now it is called by the name Missile GNC
ME Aerospace Technology - Satellite Technology =The study of artificial satellites, the on board payloads and space mechanics.
Starting from very fundamental laws of motion till Tsiolkovsky's Equation and all the fundamental forces yet to be discovered
Consider n linear equations with n unknowns
Feel the divine creation as the unknown parameter n1 becomes a known parameter in time t and we are in search of the next unknown variable n2 ,the variable GOD becomes the unknown parameter n3 and whenever we find the unknowns the next unknown will be assigned GOD.
we can never find him but his absence leaves us with no solution
Time is the only variable which not only human beings but also Differential equations suffer
WELCOME to World of Satellites >>The only non living things in search of mysteries of the Universe
5th law of thermodynamics states that the "Total entropy of life is constant,ie you change from an ordered state (happy) to disordered state (sadness) and viceversa"
there is no sadness withot a happy time
life has two paths, the one you wish to go and another u dont wish to go...u wish not to go on the path u do not wish to go and life takes u in the path u wished u do not wish to go>>>life is fu*king complicated..cant say in a single buzz
Everyone is ODD enough to be a human being
No comments:
Post a Comment