Dragon

The Dragon is a spacecraft designed and manufactured by Space X. The Dragon capsule is able to deliver payloads of both cargo and people to certain orbits. The spacecraft can have a mission duration of 1 week to 2 years. Additionally, the Dragon stands 7.2 meters (23.6 feet), and has a diameter of 3.7 meters (12 feet). The Dragon alone weighs 4,200 kilograms (9,259 pounds). Furthermore, the Dragon has a payload capacity of 6,000 kilograms (13,228 pounds), while having a return payload weight of only 3,000 kilograms (6,614 pounds). The Dragon is powered by 12 to 18 Draco thrusters, with each Draco thruster producing a thrust of 0.4kN (90lbs). Therefore, the engines use a propellant of Hydrazine (Fuel) and Nitrogen Tetroxide (oxidizer) to create that amount of thrust. On top of that, there is roughly 1,290 kilograms (2,843 pounds) of fuel and oxidizers combined aboard the Dragon. Worth noting, the Dragon can have a fail tolerant of 2 Draco engines and still operate to its full potential. The Dragon’s avionics come with full redundancy, which includes dual or quad flight computers. The Dragon also offers fault tolerant S-band telemetry and video transmitters on the communications subsystems side. Space X has said that the Dragon is set to have a manned flight sometime in 2018.

Dragon

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