Why do cylindrical rockets roll?



Here’s a fun question that not only have I myself asked, but I get asked fairly often, why do we hear a call out like “roger roll” or “roll program complete” at which point we can see the rocket rotate or roll on its X axis…
The best example of this was the Space Shuttle which had a very obvious and dramatic roll program. As soon as it cleared the tower, you can see it making a very impressive and sometimes scary looking roll.
Now a maneuver like this makes sense when a vehicle is asymmetrical like the Space Shuttle, but why do cylindrical rockets like the Saturn V, Titan, Atlas, Delta IV etc etc even bother doing a roll?
Can’t rockets just tip over in whatever direction they need to go? Do a little pitch here, a little yaw there just as long as the pointy end is going the direction it’s intended to go, who cares which side of the rocket is facing the Earth and which side is facing space… right?
So today we’ll first define the pitch, yaw, roll and their corresponding axis on a rocket, then we’re going to dive into why a rocket rolls in the first place, take a look at launch azimuths and their relationships to trajectories and we’ll look at some unique solutions to orientations including some rockets that don’t roll on ascent to align with their trajectory.
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Why doesn't the sound of a rocket launch kill you?



During a rocket launch, the sound energy produced by the engines is strong enough to seriously damage anything in close proximity. So how do NASA get around this problem? This video looks at the methods NASA and the Russians use to reduce the sound energy during a rocket launch.
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Space Shuttle Discovery Landing (STS-119)



Credit: NASA Kennedy Space Center
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LC39A Flame Trench — 28 April 2011



The day before the first launch attempt of Endeavour on STS-134, I and a coworker went out to LC39A to document the placement of pressure, heat, and temperature sensors on the SRB side of the main flame deflector inside the flame trench. This video gives an idea of what conditions are one day before a shuttle launch. The dripping water that you hear is from the water deluge system which is filled and primed to douse the launch pad at liftoff for sound suppression and heat mitigation.

Adam Savage Examines the Space Shuttle Discovery!



At the Steven F. Udvar-Hazy Center in Dulles, Va., Adam Savage examines the Space Shuttle Discovery (which he has a personal connection to), then speaks with National Air and Space Museum's Objects Conservator, Lisa Young, about the challenges of putting such a huge and historic spacecraft on public display!
For more on the Space Shuttle Discovery, visit the National Air and Space Museum's site: airandspace.si.edu/explore-and-learn/topics/discovery/about.cfm
To tour the shuttle in 360, go here: www.youtube.com/watch?v=o3XS_5L--Qg
Shot and edited by Joey Fameli
Produced by Kristen Lomasney
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Space Shuttle Era: Main Engines



Producing 500,000 pounds of thrust from a package weighing only 7,500 pounds, the Space Shuttle Main Engines are one of the shining accomplishments of the shuttle program. The success did not come easily, though.

Space Shuttle Era: Closeout Crew



The Closeout Crew has the last hands-on job before the space shuttle flies — from strapping in the astronauts to securing the launch pad's White Room before liftoff.
If a recognizable person appears in this video, use for commercial purposes may infringe a right of privacy or publicity. It may not be used to state or imply the endorsement by NASA employees of a commercial product, process or service, or used in any other manner that might mislead. Accordingly, it is requested that if this video is used in advertising and other commercial promotion, layout and copy be submitted to NASA prior to release.

Explore Kennedy Space Center: Pad 39B



From Apollo 10 and the Saturn V rocket to Artemis 1 and the Space Launch System, Launch Pad 39B is revamped for the next generation to Explore the Moon and on to Mars. Check in at the Kennedy Space Center and get fired up for launch!

Expedition 27 Crew Prepares for Launch as their Soyuz Rocket Move to Launch Pad



The Soyuz TMA-21 spacecraft and its booster and were moved to the launch pad at the Baikonur Cosmodrome in Kazakhstan on a railcar April 2 for final preparations before launch April 5, Baiknour time, to the International Space Station. The Soyuz will carry Expedition 27 Soyuz Commander Alexander Samokutyaev, NASA Flight Engineer Ron Garan and Russian Flight Engineer Andrey Borisenko to the complex. The trio will spend six months on the station, joining station Commander Dmitry Kondratyev, NASA Flight Engineer Cady Coleman and European Space Agency Flight Engineer Paolo Nespoli, who have been in orbit since December 2010. Samokutyaev, Garan and Borisenko are in final training for launch with their backups, Anatoly Ivanishin, Dan Burbank and Anton Shkaplerov. The footage includes interviews with Astronaut Nicole Stott, STS-133 Mission Specialist, and with Mike Lopez-Alegria, Deputy Director for ISS, NASA Flight Crew Operations.

Shuttle Carrier Aircraft



It has been called the world's greatest piggyback ride: a space shuttle, atop a Boeing 747 jet aircraft. But this is no ordinary 747, this is the Shuttle Carrier Aircraft...the SCA. This specially modified jumbo jet was not only a taxi service for the shuttle, but also helped in the development of the shuttle itself. In 30 years of flying, the majestic image of a spacecraft joined to the SCA, became a symbol of American invention and ingenuity.