How Does The Retp Work

How does a heat seeking missile work?

Mr. Ferguson has done a good job of explaining the underlying principles and techniques employed in infrared homing missiles. But I believe he described later generation heat seekers which relied on computers on some level and had multiple “pixels” in their sensors.But heat seeking missiles are much older than that..Back in the 50’s there were no computers which could fit into a man sized missile. So any navigation and guidance these missiles had were analog systems. Think about it, clockworks and wires making guided missiles. Imagine the horror of the first pilot who had the misfortune of being chased by these Sentient Rockets, shouting “Get it off my tail! Get it off my tail!”, twisting and turning over the Strait of Taiwan.The mechanical seeker assembly on the AIM 9 Sidewinder is nothing short of genius and is the second best American invention after Electric Guitar. Well technically the Germans invented it, but….In the simplest terms it has ONE pixel - a large circle made of materials which are sensitive to Infrared. In front of the sensor is a rotating telescope assembly with the secondary reflector offset by a few degrees. The radial position can be calculated from the position of the spinning assembly when it aligns with the radial position of the target and reflects IR waves onto the sensor. This tells you the angle to which the missile should start steering. But how hard should it steer? For that you need to find the angular displacement off the axis - the distance from centre.You measure the duration of pulse when the IR waves hit the sensor. Brief pulses mean you need to steer hard, long pulses mean the heat source is closer to the axis and you need less steering correction. Then there are analog circuits made of transistors and sorts which would work on the signal phase and duration to put out signals to the actuators and move the control surfaces (fins?).This apparatus had obvious drawbacks - like shooting flares (which serve as decoy heat sources) will cause the missile to react to every heat source through the spin cycle and buffet, eventually throwing it off the main target. Also the secondary reflector meant that there was a blind spot at the centre. Early sidewinders had a poor kill ratio of ~10% but they paved the way for more complex guided missiles in the future because it showed that “intelligent weapons” CAN BE DONE.

What are the worst ways to motivate someone?

The worst wat to motivate someone is to instill fear in their minds. It is a different things to make then aware of the consequences of their action ( or inaction), but when you try to emotionally manipulate someone to do something, it is just the most inappropriate way to motivate someone. Also, it won't work for very long. Instead, it will burden them and suffocate them.The best ways to motivate someone is to make them want to do the task themselves. You can make them picture their success which would provide the necessary motivation to take action.

Can a foreigner enter Australia and introduce his business from back home?

“Can a foreigner enter Australia and introduce his business from back home?”Not only is it allowed, it is encouraged. As long as the business is legal.If you speak to someone from your nearest Australian embassy or contact the Department of Immigration, they will let you know.The website will have the details.