Images & Video Credit & Copyright: SpaceX.
LAUNCH ALERT: Monday, April 13, 2015 at 16:33 EDT (20:33 UTC), a SpaceX Falcon 9, version 1.1 rocket will be launching from the Cape Canaveral Air Force Station (CCAFS), Space Launch Complex 40 (SLC-40 or “SLICK-40”), Florida as part of CRS-6 (SpaceX-6 or SpX-6) to resupply the International Space Station. This, the eighth dragon capsule (Dragon C-8) will be grappled and berthed to the Earth facing Harmony module or “Node 2” on April 15, where it will deliver nearly 5000 lbs. of supplies to the ISS. It is then scheduled to be released after about a month when it will return almost two tons back to Earth where is will make splashdown off the coast of Baja California.
This will be Space-X’s 6th of 12 contracted ISS resupply missions, 8th Dragon capsule (Dragon C-8), the Falcon 9’s 17th flight “F9-17”, the Falcon 9 version 1.1 (F9v1.1) 12th flight, 6th propulsive landing attempt, the 5th with affixed landing legs and 3rd with grid fins and 2nd with Autonomous Spaceport Drone Ship.
HISTORY IN THE MAKING?! SpaceX has, in the past attempted five propulsive vertical water landings by re-firing a single Merlin 1D engine. The first, (CASSIOPE) was in the Pacific and had no landing legs. The following 4 attempts have all utilized landing legs and have splashed down with some degree of success into the Atlantic. One of those near successes (CRS-5) attempted to land the first stage back on a barge in the Atlantic using the same technique but also adding four hypersonic grid fins in an “X-wing” configuration that deploy at hypersonic speeds to help slow and control the first stage during the descent. Each grid fin moves independently for pitch, yaw and roll. This launch will be the second attempt at landing the first stage back on the Autonomous Spaceport Drone Ship.
Here’s a video of the F9R with affixed legs and grid fins during a 1000m test at SpaceX’s proving grounds in McGregor, TX.
“Just Read the Instructions” Autonomous Spaceport Drone Ship: was built at the Conrad Shipyard in Morgan City, Louisiana. That’s the same place that NASA’s Pegasus barge is being refitted to support the SLS program. Pegasus carried lots of equipment throughout the years but most famously the space shuttle external fuel tanks from NASA’s Michaud Plant in Louisiana to KSC. The barge is 300 by 100 ft. and can deploy wings that extend the width to 170 ft. It has also been fitted with thrusters repurposed from deep sea oil rigs that are able to hold balance and position to within 3 meters even in storm conditions. Its face is painted black with the SpaceX “X” logo acting as a bull eye.
In a tweet that Elon put out on January 23, 2015 he lovingly issued the Autonomous Spaceport Drone Ship the name “Just Read the Instructions” and he also alluded to another one being built on the west coast named “Of Course I Still Love You.” I have no idea what that means except for the fact that even in the heat of business and innovation there is always time for a little fun.
These fun yet odd names come from Scottish Sci-fi legend Iain Banks’s “Culture” series of 10 novels. They are spacecraft known as General Contact Units (GCU’s) from the novel “Player of Games.” Other spacecraft in the series (which get to name themselves) are even more entertaining such as “Size Isn’t Everything,” “No More Mr. Nice Guy” and “Death and Gravity.” Here’s a fun Wiki page with more info: http://en.wikipedia.org/wiki/List_of_spacecraft_in_the_Culture_series
NOW FOR THE ROCKET: The Falcon 9R v1.1 rocket is a 2-stage partially reusable rocket with future ambitions of becoming fully reusable. The new version is 3.7 meters (12ft) in diameter and 68.4 meters (224.4 ft.) tall which is much taller than the Falcon 9 v1.0 or “Block 1” in order to house a longer fuel tank. It is also fitted with upgraded and reconfigured Merlin family main engines replacing the 9 Merlin-1C with the more powerful Merlin-1D engines that will provide a thrust of nearly 600,200kg (1.5 million lb.) at sea level which equates to a significant payload capacity increase. Each Merlin-1D provides 147,000 lb. of thrust at sea level or about 55% more thrust than the original 1C engines. The new merlin 1-D engines are also in a circular “octaweb” configuration and are equipped with the capability to throttle between 70% and 100%. All in all the Falcon 9 v1.1 is able to loft 13,150kg (28,990lb) into low Earth orbit (LEO); 4,850kg (10,690lb) into a geosynchronous transfer orbit (GTO) or 2.9 tons to escape velocity.
DRAGON SPACECRAFT = The Dragon spacecraft is about 23.6 ft. (7.2 m) tall with trunk attached and 12 ft. (3.7 m) wide. It’s comprised of two main sections; the pressurized cargo area which can carry 388 cubic ft. of cargo as well as the unpressurized cargo area. The trunk (unpressurized area) carries 494 cubic ft. of cargo as well as the solar arrays. OR: MAIN COMPOSITE PAYLOAD FAIRING = the composite payload fairing is 13.1 meters (43ft) in length and 5.2 meter (17ft) in diameter.
SECOND STAGE = is powered by a single Merlin-1D Vacuum engine with aluminum-lithium alloy tanks fueled by liquid oxygen and rocket grade kerosene (LOX/RP-1). This stage can be restarted multiple times to place multiple payloads into desired orbits. For maximum reliability, the second stage has redundant igniter systems and has a burn time of 375 seconds.
INTERSTAGE = a composite structure that connects the first stage to the second stage and holds the release and separation system. Its al all pneumatic stage separation system for low shock, highly reliable separation that can be tested on the ground, unlike pyrotechnic systems used on most launch vehicles.
FIRST CORE/BOOST STAGE = is powered by nine (9) Merlin-1D engines in their circular “octaweb” configuration with aluminum-lithium alloy tanks fueled by liquid oxygen and rocket grade kerosene (LOX/RP-1). The core stage has a burn time of 180 seconds and is gradually throttled. Its 9 Merlin-1D engine system can sustain up to two engine shutdowns during flight and still successfully complete its mission. The first stage is fitted with four independently steerable grid fins that help control pitch, yaw and roll during vertical decent. It’s also fitted with four landing legs that will extend before touchdown.
WATCH THE LAUNCH LIVE: NASA TV launch coverage begins at 15:30 EDT (19:30 UTC). On Monday, April 15 grapple coverage begins at 05:00 EDT with grapple slated for 07:00 EDT. Berthing coverage begins later at 09:15 EDT.
NASA TV Ustream: http://www.ustream.tv/nasahdtv
SpaceX Webcast: http://www.spacex.com/webcast/
SpaceX Ustream: http://www.ustream.tv/SpaceX
AmericaSpace Launch Webcast: http://www.americaspace.com/?page_id=33925
SpaceflightNow Launch Webcast: http://spaceflightnow.com/live/
NASA CRS-6 Coverage and Briefings: http://www.nasa.gov/centers/kennedy/news/release-20150407.html
Great article by David Dickinson & Universe Today on how to spot Dragon from home: http://www.universetoday.com/119672/chasing-the-dragon-following-spacexs-crs-6-mission-from-your-backyard/
SpaceX Falcon 9 v1.1 page: http://www.spacex.com/falcon9
Elon Musk Twitter: https://twitter.com/elonmusk
SpaceX Twitter: https://twitter.com/SpaceX
SpaceX Facebook: https://www.facebook.com/SpaceX
SpaceX YouTube: https://www.youtube.com/user/spacexchannel
SpaceX Google Plus: https://plus.google.com/+SpaceX
SpaceX Flickr: https://www.flickr.com/photos/spacexphotos