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TODAY IN HISTORY

    FIRST AMERICAN SATELLITE
    January 31, 1958 - United States

    The United States entered the space age by launching the first successful orbiting satellite, Explorer-I, four months after the Soviet launch of Sputnik on 4 Oct 1957. Explorer-I measured cosmic radiation, and led to the discovery of the Van Allen radiation belt. Its instrumentation included temperature sensors, a micrometeorite impact microphone, and a ring of micrometeorite erosion gauges. Data from these instruments were returned by a 60-mW transmitter operating on 108.03 MHz and a 10-milliwatt transmitter operating on 108.00 MHz. Explorer-I was 80-inch long, 6-in diam, weighed 31-lb with 18-lb of payload and was delivered into orbit using a Jupiter-C rocket. The orbit had a period of 114.9 minutes.

    FIRST PRIMATE IN SPACE
    January 31, 1961 - U.S. launched a 4-year-old male chimpanzee

    The U.S. launched a 4-year-old male chimpanzee named Ham on a Mercury-Redstone 2 rocket into suborbital flight to test the capabilities of the Mercury capsule. During his 16.5 minute suborbital flight, Ham experienced about 7 minutes of weightlessness, reached an altitude of 108 miles and a speed of 13,000 mph. He was wired to medical sensors to monitor his vital signs. During flight, Ham performed some simple tasks such as pulling levers when a light came on for a reward of banana pellets. Ham was recovered safely 1,425 miles downrange. This was a test flight before risking the lives of human beings. Now, after Ham's successful flight, NASA was ready to launch the first Mercury astronaut, Alan Shepard, into sub-orbital flight three months later.

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RC Hobby :

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RC hobby, which is taking up RC toys as a hobby, can entertain and give you a fun-filled experience. These RC toys are taking the spotlight for a great hobby, not only for kids but also for adults. It's never too late to try one as more and more people are getting into this kind of hobby.

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RC hobby, which is taking up RC toys as a hobby, can entertain and give you a fun-filled experience. These RC toys are taking the spotlight for a great hobby, not only for kids but also for adults. It's never too late to try one as more and more people are getting into this kind of hobby. Amongst the various types of RC toys, RC Helicopter is the most popular nowadays.

With the ongoing of the technological enhancements, flying a RC helicopter is fun and very affordable. With only about $60, you can have your own dream to fly a RC toy. Another benefit of an RC hobby is that these toys do not release harmful fumes than the other helicopter models and types release. Thus, the pilot and the onlookers will always be safe from harmful chemicals. It's always said that it's easier to fly than any other models. Most RC helicopters are ready to use and fly after the purchase; you don't need to assemble anything anymore.

The usual RC helicopter needs at least four controls. One is called the Roll or the Cyclic Pitch, the Elevator control, the Rudder, and the Collective Pitch or Throttle. You can then control the height of the flight, the steadiness of the course, and some experts like to do an acrobatic control with their RC hobby crafts. RC toys are best played in an open field where you can observe their every move and route. However, RC Helicopters are better than RC airplanes because helicopters don't need a runway to fly, you can definitely fly it anywhere, even in your backyard or inside the house.

The care and maintenance of this kind of toy is not as complicated as you think. It is a technical hobby so you also have to learn some technical tips to better care for your RC toy. The battery life is an important thing to know how to stretch the limit. Before charging it again after it drained, let it cool down first for about 15 minutes before hooking it up to charge. In this way, you will help the battery have a break and not overuse it. Before using the toy, make sure that the screws and bolts are secured in the proper places to avoid any unexpected accidents with your RC hobby craft. If something is not right, like the presence of a weird sound that you have not heard before, you have to stop using it and have it checked first with an expert to avoid sudden breakdown of your RC toy. And when keeping the item, put it in a place where it is wide and has enough room for your helicopter to prevent scratching or unwanted pressing on the item.

There are many types of RC helicopters to choose from if you want to buy one. The Mini RC Helicopters are the smallest, inexpensive, and very durable. It's better to start with a smaller helicopter first as you begin to practice to control the RC toy. The Coaxial Helicopters are more complicated to control since it has 4 channels to control. This one is good for those who want to develop a hobby for flying helicopters. If you've already developed a flying skill, then the 3D Helicopter is the one for you, since it can perform a lot of new tricks and acrobatic moves.


Source : EzineArticles

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