2) was a German ballistic missile from the Second World War. Wait and get that in.The V2 (German: Vergeltungswaffe-2 - retaliation weapon No. If you command too much of steering, our safety systems will shut you down. “And you have to vary that because you can't over steer. NASA“It takes 30 or 40 seconds to get that steering in,” Dove continued. Oil and hydraulic fluid analyses help determine condition. An oil change takes 16 hours for both Alco engines and requires approximately 220 gallons of 15W40. There's nothing little about maintenance on the crawler. The crawler doesn't steer instantaneously. “I know to get through this curve, I've got to have six degrees of steering, but I’ve got to get it in. “It's not like a car where you have instant gratification with that steering wheel,” Dove said. For a driver, that means the steering process starts about 50 yards ahead of a turn. Unlike driving a car or truck, the crawler takes its sweet time to reposition itself after turning the wheel. The challenge with steering comes from anticipating the right moment to turn the wheel for the road ahead. “It'll get crooked on you if you don't watch it,” he added. “Just keeping it straight was difficult at first,” she said. Rohloff found that out quickly during her first time at bat. Steering the crawler is nothing like steering a car or truck. You're listening to them as well as using your own visual piece.” “They're calling in what they're seeing because they have a better vantage point of where the tracks are pointed and your perspective is headed. “You have a team of observers on the ground in front of you, to the sides of you and behind you,” Rohloff said. Drivers do not rely on GPS for steering but rather a group of spotters. Some work inside the crawler tending to various systems while others walk with the vehicle and watch closely for performance cues like track function-a critical job considering a max payload of 18 million pounds. Roughly 30 people keep a close watch during the 4.2-mile trip to Launch Pad 39B. NASAVigilance is key when the crawler is underway. His father was the service manager for Worldwide Equipment and Sam worked at Volvo Trucks building rigs prior to signing up to drive the biggest rig of them all. Drivers stand as they steer with another driver sitting behind them acting as another pair of eyes.Ī big team effort Diesel runs deep for NASA crawler senior driver Sam Dove. NASA takes a slip-seat approach to piloting the colossal rig but in this case the intense concentration needed at the wheel has drivers switching out roughly every hour. Steering by wire comes courtesy of a steering wheel that’s only six inches in diameter. It takes care of business and gives you a very smooth ride.” You can speed it up, slow it down and it follows commands pretty well. Everywhere else is somewhere in between as the situation dictates. Crossing an asphalt road will be no more than. And with SLS (NASA’s most powerful rocket yet) it's going to be about 0.83. “It has the power to do two miles an hour, but you never want to do that because it is just too much for the crawler,” Dove explained. While a battered Yugo could run laps around the crawler, top speed is not the objective. “The crawler can go so slow you can barely tell it's moving,” said NASA senior crawler systems engineer and driver Sam Dove. Each pair of tracks is called a truck and weighs in at one million pounds each (see photo below). Are we there yet? takes on new meaning with the crawler which inches along on four pairs of tracks.
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