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Pathfinder Research Paper

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The fourth of July, 1997, a celebrated day in the United States of America. Along with the traditional national holiday, something else is being celebrated for another reason. The first exploration rover has landed on Mars, in Ares Vallis. Launched eight months before the landing, the Pathfinder mission was declared a success after a quick systems check. Over a total of two months and twenty-three days, Pathfinder sent back 2.3 bits of data, including 16,500 pictures from the lander itself and more than 550 from the Sojourner rover. An important date in the Pathfinder mission was December 4, 1996, when Pathfinder and Sojourner were launched from the Cape Canaveral launch pad. They were launched via a Delta 7925, the more powerful version of the Delta II booster. The Delta II boosters consisted of five components: the first stage for ascension, solid rocket motors which are used to increase engine thrust, the payload fairing to protect the spacecraft, the second stage which houses the fuel, oxidizer, and the ‘brains’, and the third stage which provides most of the velocity change for the trajectory to Mars. …show more content…
The whole process takes a total of 0.3 seconds. Once the Pathfinder lander was on the ground, the transmitter turns on then turns back off for a brief amount of time. It repeats this process a couple more times, then sends a signal back to ground controllers that it landed base-down. Winches are then used to deflate the airbags, and one deflates to obstruct the exit ramp for Sojourner. One of the ‘petals’ was then raised to a 45 degree angle, and the winch for the particular airbag rotated an extra five times to move the obstruction. Then-using exploding bolts-the petals are unfolded, and various cables and tubes are disconnected. It then communicated with Jet Propulsion Lab, and-after a systems check-was declared a

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