HI FRIENDS!!
The much awaited 3rd session resumed after a month long gap on 5th Jan 2011.
The much awaited 3rd session resumed after a month long gap on 5th Jan 2011.
The class started with a learning cum discussion on the basics of programming using C language by one of our friends that was followed by a bit of domain knowledge imparted by the expert.
As the technologies are advancing each moment of everyday, the changes are felt almost everywhere. Henceforth the electronic warfare is emerging very rapidly. It was quite interesting to know about the use of EMP (Electro Magnetic Pulse) for generation of damaging current and surge in the nuclear field.
We were then told about the basics of aerodynamic (fundamentals). In which we learnt different factors like mass, weight, force, momentum, moment, couple, density, temperature, viscosity, and pressure that have to be considered in the operation of the aircraft. We were given an idea about the effect of static,stagnation and gauge pressure. Here we got an idea on the importance of a pitot tube in an aircraft, its working principle (which was experimentally shown), and its use for the measurement of the speed of the aircraft.
The different altitude terminologies such as pressure altitude, true level altitude and absolute altitude were also discussed in brief. We were brushed up with the lower class teachings about gas laws, isothermal process and adiabatic process etc., upon which I still have to revise again. We then learnt about the standard sea level conditions of the different parameters like pressure, temperature, density and speed of sound and also about the aircraft attitude, center of gravity, aerodynamic center and center of pressure. The importance of Mach number (ratio of speed of body to that of the sound) was told.
The next we learnt was ‘how does an aircraft fly?’ we then learnt about the principle on which the working of the engine is based. The working of jet engines by suction of air and then ejecting it after transforming it into a jet was told. Next we learnt about the various parts of the aircraft. How the lift is created, also how rotate, drag, adjust in the lift and the six degrees of freedom were demonstrated with a diagram showing the various parts such as flaps, slats, wings, spoilers, rudder,etc.
We came to know about the angle of attack and how an increase in the angle above 15deg will cause the lift to drop. The cause, pros and cons of stalling was also told. Then on the friends' queries, the expert explained the effects of air pockets, ice and volcanic ash on the aircraft during its flight.
The last and a very interesting topic that was discussed on was about VTOL (Vertical Take Off and Landing). We were also shown a video regarding it.
The 3rd session winded with a video of the crash of French airbus A320 in 1988. Even though the airbus was new for the flight, its difficult to blame the plane for the crash. I personally feel that there was more error on human side.
Wish you all a great day ahead!!!
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