Japan rocket carrying UAE Mars probe ready for Monday launch

A Japanese H-IIA rocket carrying a United Arab Emirates Mars spacecraft has been placed on the launch pad for Monday's scheduled liftoff for the Arab world's first interplanetary mission, officials said Sunday.

NASA's Perseverance rover attached to Atlas V rocket

NASA's Perseverance Mars rover has been attached to the top of the rocket that will send it toward the Red Planet this summer. Encased in the nose cone that will protect it during launch, the rover and the rest of the Mars ...

Launch is approaching for NASA's next Mars rover, Perseverance

NASA's Perseverance Mars rover is just over a month from its July 20 targeted launch date. The rover's astrobiology mission will seek signs of past microscopic life on Mars, explore the geology of the Jezero Crater landing ...

Video: Europe's Spaceport, back to business

Workers are returning to Europe's Spaceport in Kourou, French Guiana to resume preparations for Vega and Ariane 5 launches. Construction of the new Ariane 6 launch pad has also restarted.

2 U.S. astronauts board SpaceX rocket for historic launch

With thunderstorms threatening a delay, two NASA astronauts climbed aboard a SpaceX rocket ship Wednesday for liftoff on a history-making flight that was seen as a giant leap forward for the booming business of commercial ...

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Launch pad

A launch pad is the area and facilities where rockets or spacecrafts liftoff. A Spaceport (or rocket launch site) can contain one or many launch pads. A typical launch pad consists of the service and umbilical structures. The service structure provides an access platform to inspect the launch vehicle prior to launch. Most service structures can be moved or rotated to a safe distance. The umbilical structure has propellent loading, gas, power, and communication links to the launch vehicle. The launch vehicle sits atop of the launch platform, which has the flame deflection structure to withstand the intense heat and load generated by rocket engines during liftoff.

Most cryogenic launch vehicles need to be continuously topped off as scheduled liftoff approaches. This is particularly necessary as various holds are placed on the liftoff and then removed as support personnel correct problems or verify they are not serious. Without the ability to top off the launch vehicle, the launch would have to be scrubbed when problems slowed down the countdown. Gantries are commonly designed and constructed on launch pads to meet these types of servicing requirements both during launch and in the preparation period leading up to it.

Most rockets need stable support for a few seconds after ignition while the engines ramp up and stabilize at full thrust. This stability requirement is commonly met by the use of explosive bolts to connect the launch vehicle to the pad. When the vehicle is stable and ready to fly the bolts explode, severing the vehicle's ties to the launch pad and structures on the ground.

This text uses material from Wikipedia, licensed under CC BY-SA