Noun

rocket (plural rockets)

  1. A rocket engine.
  2. (military) A non-guided missile propelled by a rocket engine.
  3. A vehicle propelled by a rocket engine.
  4. A rocket propelled firework, a skyrocket
  5. (slang) An ace (the playing card).
  6. (military slang) An angry communication (such as a letter or telegram) to a subordinate.
    • 1980, David Schoenbrun, Soldiers of the Night: The Story of the French Resistance, Dutton, ISBN 9780525206637, page 203,
      While [Colonel Robert] Solborg and [Jacques] Lemaigre[-Dubreuil] were dreaming of revolts, [William Joseph “Wild Bill”] Donovan had learned of Solborg’s insubordination and meddling. He sent him a “rocket” ordering him out of North Africa and back to Lisbon at once. Solborg flew to Lisbon and then on to Washington to face out his problem with Donovan.
Derived terms
Derived terms

From Wiktionary under the GNU Free Documentation License.
Fri Sep 3 13:07:40 2010

A rocket or rocket vehicle is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine. In all rockets, the exhaust is formed entirely from propellants carried within the rocket before use. Rocket engines work by action and reaction. Rocket engines push rockets forwards simply by throwing their exhaust backwards extremely fast.

Rockets, in military and recreational uses, date back to at least the 13th century. Significant scientific, interplanetary and industrial use did not occur until the 20th century, when rocketry was the enabling technology of the Space Age, including setting foot on the moon.

Rockets are used for fireworks, weaponry, ejection seats, launch vehicles for artificial satellites, human spaceflight and exploration of other planets. While comparatively inefficient for low speed use, they are very lightweight and powerful, capable of generating large accelerations and of attaining extremely high speeds with reasonable efficiency.

Chemical rockets are the most common type of rocket and they typically create their exhaust by the combustion of rocket propellant. Chemical rockets store a large amount of energy in an easily released form, and can be very dangerous. However, careful design, testing, construction and use minimizes risks.

From Wikipedia under the GNU Free Documentation License
Fri Sep 3 00:09:59 2010

 Rocket City The Expert Computer Repair In Huntsville Madison Alabama
pcissue.com
Rocket City The Expert Computer Repair In Huntsville Madison Alabama

Earnest Younge

hu, 02 Sep 2010 13:56:09 GM

As there are a number of computer repair shops just in Huntsville and Madison Alabama you might often find it quite difficult to spot the repair center that can offer you efficient and long term solutions to your software and hardware ...

From Google Blog Search: "rocket"
Fri Sep 3 13:07:40 2010

Army Wants Nanomissiles to Launch Small Satellites - FOXNews
foxnews.com
Army Wants Nanomissiles to Launch Small Satellites - FOXNews
Tue, 10 Aug 2010 12:02:10 GMT+00:00
FOXNews Standing just a little taller than a basketball hoop, the rocket's modularity could make it useful not only as a launch vehicle but potentially a missile ...
US alters travel warning after complaint by Israeli government - CNN
cnn.com
US alters travel warning after complaint by Israeli government - CNN
Thu, 12 Aug 2010 18:07:49 GMT+00:00
cnn the initial travel warning issued last week was replaced Tuesday with a new version that dropped a reference to Eilat, the Red Sea resort town hit by rocket ...
How to build an air-powered rocket - Lexington Herald Leader
kentucky.com
How to build an air-powered rocket - Lexington Herald Leader
Thu, 12 Aug 2010 10:42:17 GMT+00:00
Lexington Herald Leader This air-powered rocket may be light, but it's no lightweight: it flies impressively far, fast, and high. Ours flew more than 50 feet - right onto the ...

From Google News Search: "rocket"
Fri Sep 3 13:07:40 2010

MRocket2 jpg
vespa.org.uk
MRocket2 jpg
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[source page]

Mozzarella Rocket on a recent tour of the Isle of Man TT It is a 1971 Vespa 90

Rocket
cars-show.org
Rocket
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[source page]



US Space Rocket Museum Link jpg
fruitcakecity.net
US Space Rocket Museum Link jpg
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[source page]

Kennedy Space Center U S Space Rocket Museum

From Yahoo Image Search: "rocket"
Fri Sep 3 13:07:40 2010

What rocket propellant is the most efficient and powerful?
Q. What rocket propellant is the most efficient "mpg" and powerful "high thrust potential". I have 1 cubic foot to store propellant. I would like this model rocket to travel a couple hundred miles. Once its air born it has an on board computer that adjusts the fuel consumption. -
Asked by unknown - Fri Jul 30 21:28:29 2010 - - 5 Answers - 0 Comments

A. The most powerful and efficient fuel (measured as "specific impulse") chemical propellant ever test-fired in a rocket engine was lithium, fluorine, and hydrogen: 542 seconds (5,320 m/s). This is a tripropellant, which tend to be the highest power. However, more modern fuels are being used as well, such as LOX/LH2 liquid propellants and even conventional ammonium-nitrate based fuels mixed with a hydrazine compound and a fuel that is essentially granular forms of C-4 (plastique) high-explosives used in demolitions and bombs.
Answered by Earth Man - Fri Jul 30 21:53:09 2010

What is the maximum height reached by the rocket and the time required to reach this maximum height?
Q. A 0.1 kg model rocket is launched vertically from rest at time t=0 with a constant thrust of 10 N for 1 second and no thrust afterwards. Neglecting air resistance and the decrease in mass of the rocket.
Asked by yanlan - Sun Feb 21 21:50:47 2010 - - 2 Answers - 0 Comments

A. Lightweight rocket, eh? Oh, and sorry, but "knr" is wrong. Direct answers --> (1) Maximum altitude = 560 m (2) Travel time to maximum altitude = 11.2 s Here's how it's done... m = 0.1 kg F = 10 N t = 1.0 s Vi = 0.0 m/s First the acceleration portion of the problem -- find acceleration from thrust F = MA... so... A = F/M A = (10 N) / (0.1 kg) A = 100 m/s^2 Find the final velocity at engine cut-out Vf = (t * A) + Vi Vf = [ (1.0 s) * (100 m/s^2) ] Vf = 100 m/s Find the distance covered during the launch d = 1/2 ( Vf + Vi ) t d = 0.5 * [ (100 m/s) + (0.0 m/s) ] * (1.0 s) d = 50 m Now Vf = Vo for the trajectory portion of the problem Vo = 100 m/s = 90 Yo = 50 m g = 9.80665 m/s^2 Calculate time to maximum altitude after… [cont.]
Answered by Earth Man - Sun Feb 21 22:07:55 2010

How can you secure a model rocket engine into a homemade model rocket made out of pvc?
Q. I have started a nice (small) pvc model rocket (the size that fits and engine without a mount), but I cant think of a cheap way to secure the engine so that the wont shoot out the back of the rocket during the charge that ejects the parachute and nose cone. Please help me. Thanks.
Asked by rman161142 - Sat Apr 25 10:19:50 2009 - - 5 Answers - 1 Comments

A. So the engine FITS securely in the PVC without a mount already, and you're sole concern is to keep it from popping out during he ejection sequence ?? For a CHEAP solution, I'd take 3 inches of metal coat-hanger wire, pound it flat with a hammer, put a 90 degree bend in one end so when mounted against the rocket tube it will extend out just far enough to latch the bottom end of the rocket motor. Then secure it to the tube. To secure it to the tube, I'd router a small slot in the PVC, and then use an epoxy to glue the upper 2/3 of the wire to the body. Matt M has a good idea as well. It's been years since I was launching Estes rockets, BUT I really don't remember the ejection charge being THAT forceful as long as the engine mounts… [cont.]
Answered by mariner31 - Sat Apr 25 12:23:17 2009

From Yahoo Answer Search: "rocket"
Fri Sep 3 13:07:40 2010