Apollo 11 Saturn V Launch Camera E-8


Published on Apr 7, 2013

This clip is raw from Camera E-8 on the launch umbilical tower/mobile launch program of Apollo 11, July 16, 1969. This is an HD transfer from the 16mm original. Even more excellent footage is available on our DVDs at our website at http://www.spacecraftfilms.com The camera is running at 500 fps, making the total clip of over 8 minutes represent just 30 seconds of actual time.

Reaction Wheels – Things Kerbal Space Program Doesn’t Teach


Published on Jul 9, 2016

Reaction wheels in Kerbal Space Program might actually refer to a number of different technologies used to control the attitude of spacecraft. Let’s go into some detail about these.

How Gravity Assists Work


Published on Sep 25, 2017

Time to clear up some misconceptions and show how a spacecraft’s close encounter with a planet can change a spacecraft’s orbit and enable trajectories beyond its available delta-v. I specifically cover some of the math and look at the unusual trajectory employed by the OSIRIS REx mission.

Geostationary, Molniya, Tundra, Polar & Sun Synchronous Orbits Explained


Published on Jan 10, 2019

Illustrating different classes of orbits commonly used by satellites in Earth orbit, there are special classes of orbit designed to solve certain problems and the physics behind them is important. All the orbits are displayed using Universe Sandbox 2. Buy it here: https://www.humblebundle.com/store/un…

Heat Shields – Things Kerbal Space Program Doesn’t Teach


Published on Dec 29, 2018

The science of Aerothermodynamics covers what happens during a spacecraft’s fiery flight through a planetary atmosphere as it sheds speed, converting kinetic energy into thermal energy. This represents a complex interaction between fluid mechanics, thermal radiation and chemistry. The engineering required to shield hardware against this intense heating is an equally complex multi disciplinary art. If you want to learn the math then this course offered an excellent overview: https://tfaws.nasa.gov/TFAWS12/Procee…

Graveyard Orbits Where Old Satellites Are Forgotten


Scott Manley
Published on Jun 21, 2019
When a satellite is designed these days it’s also important to think about what happens at the end of its lifetime, for more LEO satellites they’ll happily decay and fall into the atmosphere on their own. But there are many cases where this can’t happen, either because the spacecraft doesn’t have the fuel, or because the satellite is dangerous. For these, there’s a retirement home in the graveyard orbit.

How To Make Sure Ships Don’t Sink | Built From Disaster | Spark


Published on May 31, 2019

Advances in boat technology, including the design features that allow passenger ships to operate safely.

Why do cylindrical rockets roll?


Everyday Astronaut

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.

U.S. Air Force is upgrading the F-15 to keep its edge on China fighter jets


Published on Oct 9, 2017

U.S. Air Force is upgrading the F-15 to keep its edge on China fighter jets The Air Force is revving up electronic warfare upgrades for its F-15 fighter as a way to better protect against enemy fire and electronic attacks, service officials said. Boeing has secured a $478 million deal to continue work on a new technology called with a system called the Eagle Passive Active Warning Survivability System, or EPAWSS.

 

 

Uncovering the impossible: 6 of the Heaviest Ancient Stones Ever Made


Published on Jan 10, 2018

Ancient people in this region of the World heralded a time of extraordinary achievement, it was the age of the pyramid builders when some of the largest and most sophisticated structures of all time were built, including the last remaining Seven-Wonders of the ancient world. The true age of most of these sites predates 12 thousand years and built by a completely lost Civilization that appears to have spread all across the globe.