Ben

4/9/12 Log Entry #1 Things to know about landing a rover on mars.


 * Needs to be rust proof as mars atmosphere contains oxygen which will oxidize iron.
 * Mars is covered in creators need to pick a good landing spot
 * Need to mars orbit to line up with it.
 * Mars has seasons due to its tilt need to point rover
 * Mars is cold(-125 to 25 degrees C) so rover needs to withstand cold tempatures
 * Need to launch when planets are close

//Ms. Mc: Some good facts about Mars and its conditions, however, I beleive all of these came from our class discussion. Where is your original work? (-3). Please let me know if you don't get all the information from class and I will send it to you. 7/10 //

4/9/12 Log Entry #2 History of Rockets

Aeolipile was one of the first rocket engines. A Greek inventor named Alexandria used steam as a propulsive gas with the power of water and fire. Alexandria mounted a sphere on top of a water kettle and a put fire below the kettle which turned the water into steam, and then the gas would travel through pipes and up to the sphere. It worked when the tubes let the gas escape from the nozzles, and then caused the spinning motion to be made.

The first rockets that were made were accidents. Sometime in the first century, the Chinese said that they had a form of explosive gunpowder that was made from saltpeter, sulfur, and charcoal dust. This created an explosion during the festivals, and they filled some bamboo tubes with the mixture and put them into the fires. Soon the Chinese discovered that the gunpowder tubes could shoot themselves into the sky just from the power that was made from the leaking gas. Then the first real rockets were founded.



//Ms. Mc: Good summar of the early contributions to rocket science but nothing from "modern" day (i.e., Goddard's liquid propellant rocket, V2s, Sputnik, NASA, etc.) (-5). Good drawgings. Please be sure they have a caption (-1/2) and refer to them in your writing (i.e., "as seen in Figure 1, . . .). 4.5/10//

4/9/12 <span style="color: #0000ff; font-family: Impact,Charcoal,sans-serif;">Log Entry #3 <span style="color: #0000ff; font-family: Impact,Charcoal,sans-serif;">Scratch Rocket Flight Simulation

<span style="color: #0000ff; font-family: Impact,Charcoal,sans-serif;">media type="custom" key="14078002" <span style="color: #0000ff; font-family: Impact,Charcoal,sans-serif;">Turn sound on <span style="color: #0000ff; font-family: Impact,Charcoal,sans-serif;">Press green flag to start <span style="color: #0000ff; font-family: Impact,Charcoal,sans-serif;">Press red stop sign to stop <span style="color: #0000ff; font-family: Impact,Charcoal,sans-serif;">If simulation will not work click "Learn more about this project"

Rachel J- Great definitions, but I did see a few typos. Also, you had really good transitions. Good job! ===Aly H- I think you did really well and I liked the rocket. I think you could have had a little bit longer time on the second definition, but I really liked the rocket splitting, and the engines coming off. Great job!===

Labeled Rocket Photo
The importance of the nose cone it to improve the aerodynamics of the rocket, so it will go higher. The body tube houses the recovery system and the engine. The recovery system is what lets your land safely. The engine it the component that lets the rocket generate thrust to lift off. The launch lug aims the rocket so it fly’s straight. Fins are used to assist the launch lug in flying in a constant path.

// Ms. Mc: great definitions and nice labels! Left off the motor mount label and didn't discuss it or the recovery wadding. 8.5/10 //

541 rocket
The atlas V541 rocket is the perfect rocket for tacking a two ton rover to Mar's surfes. The V 541 rocket was chosen to complete this task because NASA has used this type of rocket before to send rovers to Mars. You could call the V541 the heavy weight champ of all rockets because is is 1.7 million pounds and nineteen stories tall. Its 4 solid boosters and the common core booster get the rocket out of earths atmosphere. Then the centar kicks in witch takes the payload to its course were it jettisons and cruses to mars.



//Ms. Mc: Good general overview and diagram. The Atlas V-541 has not been used for previous Mars rover missions (-1/2). Please do your writing in Word so you can run the spell check before you post to the Wiki. don't forget to add a title to your caption and refer to your figure # in your text (-1). 8.5/10//

Log entry #6 4/25/12 Rocket launch lad write up

The purpose of this experiment was to find out the apogee was for different group’s model rockets. The apogee was measured my angle guns from 100meters away. Then the angles were averaged together to make a certain angle used to compare with the rest. Some of the forces acting on the rocket are, gravity witch will reduce the heights flown by the rocket. The next is air friction witch slows the rocket along with the gravity because the atoms in the air are clashing with the ones in the rocket. The last force is thrust witch allowed the rocket to leave the launch pad. It was hypnotized that the higher the mass of the rocket would create more inertia to cause more costing.

It was confirmed that the hypothecs was not confirmed and reasoning for this was that in the hypothecs it states that the heaver the rocket the more it will coast. In the hypothecs it was thought that there would be a direct relationship, but there was a inverse. It was inverse because the lighter the mass of the rocket the higher it flue there for making a higher apogee. There might have been some error in this experiment because there could have been any number of errors. First off the wind could have been stronger or weaker on each flight. Somebody could have put the fins on the wrong way. There could have been some angle gun errors in finding the angle of apogee. There could have been lots more errors like launching on different days, of motors falling out of the rocket, really anything could have happened.

Log entry #7 5/30/12

It was thought that having the fins placed backwards would reduce air friction on the rocket. In the figure 1 diagram above. It was also thought that the smaller fins on the edge of the bigger one would increase stability. Thus would increase the height of apogee. the first rocket's mass was 43.9 and the second one was 42.9 grams, so there was a difference of 1 gram between the two. the apogee for the first flight was 24 meters the second was 4 meters high. the center of mass was also moved down to the fins compared to the other one. the flight path was completly altered and the rocket became even more unstable. the fins seemed to increas the air channal down the wings.

Log entry #8 5/17/12 history of robotics

The first robots or metal men were made and used for the royal family to enjoy. these first robots would just move slightly or turn a head. this would have been an amazing thing back then because it was so advanced. they were mostly powered by hand or by crank. The robots were able to move by a chain moving or gears turning alowing moction to occur and let the robot move. Leonardo's robot was nicknamed the knight because it looked like someone waring a suit of armor. the suit was used to cover up the inside of the robot which had all the chains ad gears. his robot had almost a free rande of motion. this robot could not only move its arms and legs but also its wrists and feet. having these small parts move was the most important part on makeing the robot human like.



//Ms Mc. - Good start, Ben, but you were to discuss through how robots are used today. -4 You also need to add titles to your captions for your figures and specifically refer to them in your text (i.e., "as seen in Fig. 1, ...") -1/2 5.5/10//

Log entry #10 On the edge 5/17/12

media type="file" key="Tyler_Ben_Viedo.AVI" width="300" height="300" video 1 Title? -1/2

Description of challenge? -2

Block 1. this block allows the robot to wait for a sound to cause it to move. What port? How loud of sound? -1 Block 2. this block lets the robot move for infinite rotations. What direction? What ports? -1 Block 3. allows the robot to move until it senses a different light. What amount of light? -1/2 What port? Block 4 this makes the robot stop if light is sensed What ports? Will it brake or coast? -1/2 Block 5. this block tell the robot to say watch out when light is detected and when the robot stops. How loud? -1/2

Ms Mc - good overall, just missing some details. I'm happy to check over your work before you turn it in. 14/20

Log Entry#11 Readings 6/5/12

The first missions to mars were to see if mars has life. although the missions have never shown large life they have found that this planet could have supported life. some of the rovers have discovered that mars that cloud have supported life. some of the things that they found is that mars use to have water covering the surface of the planet. they also found that it is a basic planet so things could thrive there. also it was later thought up that maybe the only living things there cold be microbes. in figure 1 shown below shows the new rover curiosity with more advanced experiments.

As seen in figure 2 living things can be quite small. the findings on mars have been small and it has been thought that there might be microbes on mars. mirco oraganisumes are living things like Bactria, moss, and fungi that are the smallest living things. in figure shows a picture of Bactria.to classified if one is dead meaning use to have all of the charsistics of life and now does not, alive meaning has all of the charsiticts of life, dormant meaning at a time of rest where it has all of them but some are not being used, and non-living were it has none of the charsittics of life. one of the charsitis of life is that it grows over time. the second is that it can reproduce to make more of the same species. Third it reacts to stimuli. forth it needs raw materials. fifth it has cells. sixth it has and needs energy. seventh it evlovels over time to fit the environment. eightth it has homeostatis.



//Ms. Mc - good general summary, figures, and explanation of how you would classify a Martian specimen. What did the rovers find out with respect to water or life on Mars? (-1/2). No title for your first figure and not caption for the second (-1/2). 9/10//