Free Essays on An Overview Of SRBs And Their Application In A Shuttle Launch

Have you ever seen a spaceship before launch? If you so I’m sure you have noticed the two cylindrical objects with the cone tops mounted on the side of the space shuttle. Those are Solid Rocket Boosters (SRBs). SRBs are very useful to do many tasks. Not only does NASA use the technology of SRBs, they are used every where, even a long time ago. Did you know that SRBs were the first engines created by man? They were invented hundreds of years ago in China and have been used ever since. Even in the National Anthem the line about "the rocket's red glare" is talking about small military SRBs. Let’s have a look at how these SRBs got to be so useful and how they are made. The idea behind a simple SRB is straight forward. What you want to do is create something that burns very quickly but does not explode. As you are probably aware, gunpowder explodes. It is because of there innate properties SRBs are very safe, with a low cost to produce and relatively simple. In a small model rocket engine or in a tiny bottle rocket the burn might last a second or less. In a Space Shuttle SRB containing over a million pounds of fuel, the burn lasts about two minutes. Also since it is a chemical reaction there is no way of stopping it from burning once it has started. The composition of most common SRBs are a combination of: ammonium perchlorate (oxidizer, 69.6 percent by weight), aluminum (fuel, 16 percent), iron oxide (a catalyst, 0.4 percent), a polymer (a binder that holds the mixture together, 12.04 percent), and an epoxy curing agent (1.96 percent). Along with the main load of fuel the space shuttle SRBs have an onboard recovery system, parachutes, floatation devices, signaling devices, and explosive charges for separation. The SRBs mentioned above provide most of the thrust (71 percent) needed to lift the space shuttle off the launch pad. This seems like an easy task, but it’s not easy getting something that big off earth. Letï ¿ ½... Free Essays on An Overview Of SRBs And Their Application In A Shuttle Launch Free Essays on An Overview Of SRBs And Their Application In A Shuttle Launch Have you ever seen a spaceship before launch? If you so I’m sure you have noticed the two cylindrical objects with the cone tops mounted on the side of the space shuttle. Those are Solid Rocket Boosters (SRBs). SRBs are very useful to do many tasks. Not only does NASA use the technology of SRBs, they are used every where, even a long time ago. Did you know that SRBs were the first engines created by man? They were invented hundreds of years ago in China and have been used ever since. Even in the National Anthem the line about "the rocket's red glare" is talking about small military SRBs. Let’s have a look at how these SRBs got to be so useful and how they are made. The idea behind a simple SRB is straight forward. What you want to do is create something that burns very quickly but does not explode. As you are probably aware, gunpowder explodes. It is because of there innate properties SRBs are very safe, with a low cost to produce and relatively simple. In a small model rocket engine or in a tiny bottle rocket the burn might last a second or less. In a Space Shuttle SRB containing over a million pounds of fuel, the burn lasts about two minutes. Also since it is a chemical reaction there is no way of stopping it from burning once it has started. The composition of most common SRBs are a combination of: ammonium perchlorate (oxidizer, 69.6 percent by weight), aluminum (fuel, 16 percent), iron oxide (a catalyst, 0.4 percent), a polymer (a binder that holds the mixture together, 12.04 percent), and an epoxy curing agent (1.96 percent). Along with the main load of fuel the space shuttle SRBs have an onboard recovery system, parachutes, floatation devices, signaling devices, and explosive charges for separation. The SRBs mentioned above provide most of the thrust (71 percent) needed to lift the space shuttle off the launch pad. This seems like an easy task, but it’s not easy getting something that big off earth. Letï ¿ ½...

Funny Images Conjured up by Web Comments

Funny Images Conjured up by Web Comments Funny Images Conjured up by Web Comments Funny Images Conjured up by Web Comments By Maeve Maddox Sometimes Im more amused than annoyed by spelling errors and incorrect word choices that I see in blogs and comments. Here are a few. Let your imagination soar! 1. Looking for a laptop for my mother she only needs a bear-bones laptop. 2. Someone said this to me one time and I balled my eyes out. 3. his scarlet bishops cossack and cap. 4. The boy [who had been beaten] had whelps on him. 5. He hears a disemboweled voice. 6. The cowboy was rounding up the doggies. 7. The crust of my interest is World War I. 1. bare-bones adjective meaning essential. a laptop with only the most essential features. bear-bones the skeletal structure of a bear (an animal of the family Ursidae). 2. balled formed into a ball. We can speak of a balled fist. Yarn can be balled, as can little bits of wool on a sweater. bawled past tense of bawl, to cry out loudly. The word may come from an Icelandic word for the sound cattle make. Related to bellow. 3. Cossack originally a member of a Russian military elite; a distinctive item of their uniform was a tall fur hat. Figuratively, a cossack is an authoritarian figure that uses any type of force to control others. The character Chekov in the original StarTrek series was fond of calling people he didnt like cossacks. A cassock, on the other hand, is a clerical garment, a long close-fitting tunic reaching to the feet. This is what the bishop probably had. 4. A whelp is the young of a carnivorous animal, such as a wolf cub or puppy. The word called for in this context is welt. welt: a raised area, ridge, or seam on the body surface (as from scarring or a blow). 5. disembowel: to take out the bowels of, eviscerate. This is what the word drawn refers to in the expression hanged, drawn, and quartered. The word this writer was reaching for was disembodied. disembodied in this context means that a voice was heard, but its source could not be seen. 6. doggies a childs word for dogs. Ex. Look at the Mother Doggy and all the little doggies! dogy (also spelled dogey and dogie) a motherless calf in a range herd. 7. crust the hardened exterior of something. It could be a pie crust or the earths crust. The speaker probably intended to say crux. crux a word derived from the Latin word for cross. A cross, as we know, can be a tool of torture and execution, but its shape is also suggestive of a central nexus, like a crossroads. Both ideas contribute to the meanings of the English word crux: 1 a. a puzzling, confusing, or difficult problem : an unsolved question b. a determinative point at issue : a pivotal or essential point requiring resolution or resolving an outcome 2. a main or central feature (as of an argument or plan) Please share your own examples of misused words that conjure up funny images. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Misused Words category, check our popular posts, or choose a related post below:5 Uses of InfinitivesLatin Plural Endings30 Words for Small Amounts