Image credit & copyright: SpaceX. Live streaming links and mission information below.
LAUNCH ALERT: Monday, May 15, at 23:20 UTC (19:20 EDT) a SpaceX, Falcon 9 rocket will lift off from historic Launch Complex-39A (LC-39A) with the Inmarsat 5, Flight 4 (F4) communications satellite for Inmarsat, London. The satellite will be placed into Geostationary Transfer Orbit (GTO).
This will be SpaceX’s 34th Falcon 9 flight (F9-35) however, due to the large size of this satellite and the fact that it’s being sent into a high energy Geostationary Transfer Orbit (GTO), Falcon will need all the fuel and burn time it can muster to deliver the satellite. That means there will be no landing attempt on land or sea.
Autonomous Spaceport Drone Ships (ASDS): Were built at the Conrad Shipyard in Morgan City, Louisiana, the same place that NASA’s Pegasus barge was 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.
SpaceX’s barges are 300 by 100 ft. with “wings” that extend that 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. ASDS’s are painted black with the SpaceX “X” logo, a yellow inner ring and outer white ring acting as a bull eye. The East Coast ASDS is “Of Course I Still Love You (OCISLY)” and the West Coast’s ship is “Just Read The Instructions (JRTI).”
In total there have been three ASDS’s. The first of which was Marmac 300, a deck barge named “Just Read The Instructions (JRTI).” That ASDS was used for two east coast landing attempts (CRS 5 & 6), deconstructed and retired. East Coast duties were then transferred to Marmac 304 named “Of Course I Still Love You (OCISLY).” A third ASDS, Marmac 303 was constructed and stationed on the West Coast where it fields launches from Vandenberg AFB, CA. Its name, “Just Read The Instructions (JRTI).”
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
The Rocket: The greatly improved Falcon 9R FT rocket is a 2-stage partially reusable rocket with future ambitions of becoming fully reusable. The new version is 3.7 m (12 ft.) in diameter and 70 m (229.6 ft.) tall which is about 1.6 m (5.6 ft.) taller than the Falcon 9 v1.1 or “Block 2” in order to house a higher volume fuel tank. It is also fitted with upgraded Merlin family main engines. They have replaced the 9 Merlin-1D (and before them were the 1C engines), with the more powerful Merlin-1D+ engines that will provide a thrust of nearly 694,000kg (1.53 million lb.) at sea level. Each Merlin-1D+ provides 180,000 lb. (81,600 kg) of thrust at sea level, which equates to roughly a 20% increase in overall performance. If you add that with the new process of densifying the fuel and improving the overall airframe, the total gain in performance is about 33%.
Dragon Spacecraft (when in use) = 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 (when in use) = the composite payload fairing is 13.1 meters (43ft) in length and 5.2 meter (17ft) in diameter. Dragon, along with Russia’s Progress & Soyuz, Europe’s (ESA) Automated Transfer Vehicle (ATV), Orbital ATK’s Cygnus and Japan’s (JAXA) H-II Transfer Vehicle (HTV), is one of only six vehicles that can fly to the Space Station. While Russia’s Soyuz is currently the only crewed means of reaching and returning from Station, SpaceX’s Dragon is currently the only means of returning experiments and supplies back to Earth from Station.
Second Stage: Powered by a single Merlin-1D+ Vacuum engine with aluminum-lithium alloy tanks fueled by liquid oxygen and rocket grade kerosene (LOX/RP-1). The Merlin 1D+ are basically the same Merlin-1D engines used previously but instead of utilizing them at only 80%, they will now be operating at 100%. 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.
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 Merlin 1D+ engines are basically the same Merlin-1D engines used previously but instead of utilizing them at only 80%, they will now be operating at 100%. 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.
SpaceX Webcast: http://www.spacex.com/webcast/
SpaceX YouTube (Hosted Webcast): https://www.youtube.com/watch?v=ynMYE64IEKs
SpaceX YouTube (Technical Webcast): (forthcoming)
Inmarsat 5 Flight 4 (I5F4)Mission Info:
45th Space Wing L-1 Weather Forecast: http://www.patrick.af.mil/About-Us/Weather
Inmarsat 5 Flight 4: http://www.inmarsat.com/i5f4/
SpaceX Inmarsat 5 Flight 4 Press Kit: http://www.spacex.com/sites/spacex/files/inmarsat5f4presskit.pdf
Elon Musk Twitter: https://twitter.com/elonmusk
Elon Musk Instagram: https://www.instagram.com/elonmusk
SpaceX Twitter: https://twitter.com/SpaceX
SpaceX Facebook: https://www.facebook.com/SpaceX
SpaceX Instagram: https://www.instagram.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
Main Site: http://www.inmarsat.com/
Falcon 9 Family & Random SpaceX 411:
SpaceX Falcon 9: http://www.spacex.com/falcon9
SpaceX Falcon Heavy: http://www.spacex.com/falcon-heavy
SpaceX Falcon 9 (Wiki): https://en.wikipedia.org/wiki/Falcon_9
SpaceX launches (Wiki): https://en.wikipedia.org/wiki/List_of_Falcon_9_and_Falcon_Heavy_launches
SpaceX booster landing attempts (Wiki): https://en.wikipedia.org/wiki/Falcon_9_booster_controlled-descent_and_landing_tests
Falcon 9 core (booster) serial numbers: https://www.reddit.com/r/spacex/wiki/cores
SpaceX Stats: https://spacexstats.com/
SpaceX Now: https://spacexnow.com/
Launch Complex-39A (LC-39A):
NASA Launch Complex 39 (LC-39): https://www.nasa.gov/mission_pages/shuttle/launch/launch-complex39-toc.html
Heroicrelics Launch Complex 39 (LC-39): http://heroicrelics.org/info/lc-39/lc-39-abcd.html
Wiki Launch Complex 39 (LC-39): https://en.wikipedia.org/wiki/Kennedy_Space_Center_Launch_Complex_39
Patrick AFB: 45th Space Wing, Cape Canaveral, FL:
Main Site: http://www.patrick.af.mil/