Search results
Results from the WOW.Com Content Network
youtube-dl -o <path> <url> To see the list of all of the available file formats and sizes: youtube-dl -F <url> The video can be downloaded by selecting the format code from the list or typing the format manually: youtube-dl -f <format/code> <url> The best quality video can be downloaded with the -f best option.
Brian Walker is a toy inventor from Bend, Oregon [1] who is known for attempting to build his own rocket and as the inventor of several toys, namely the air bazooka. His rocket is known as Project R.U.S.H., which stands for Rapid Up Super High. It was intended to be fueled by hydrogen peroxide and equipped with parachutes for use when landing ...
Homemade Astronauts is a television show on Science Channel (Discovery Science USA) and Discovery+ that debuted in 2021. It featured DIY wannabe astronauts, who design and build their own equipment, in an attempt to reach the edge of space.
Mark Rober is an American YouTuber, engineer, inventor, and educator.He is known for his YouTube videos on popular science and do-it-yourself gadgets.Before he became a YouTuber, Rober was an engineer with NASA for nine years, where he spent seven years working on the Curiosity rover at NASA's Jet Propulsion Laboratory.
An appalling accident rate [5] led individuals such as G. Harry Stine and Vernon Estes to make model rocketry a safe and widespread hobby by developing and publishing the National Association of Rocketry Model Rocket Safety Code, and by commercially producing safe, professionally designed and manufactured model rocket motors. Model rocketry by ...
The historic Space Shuttle reused its Solid Rocket Boosters, its RS-25 engines and the Space Shuttle orbiter that acted as an orbital insertion stage, but it did not reuse the External Tank that fed the RS-25 engines. This is an example of a reusable launch system which reuses specific components of rockets.
On 27 July 2019, Japanese startup Interstellar Technologies Inc. launched sounding rocket MOMO-F4 with number of payloads including three origami paper planes made out of heat resistant paper. These paper planes by paper-plane enthusiast Takuo Toda were supposed to be released at the planned 100 km apogee, but due to anomalies the MOMO-F4 ...
Developing a reusable rocket is extremely challenging due to the small percentage of a rocket's mass that can make it to orbit. [12] [82] Typically, a rocket's payload is only about 3% of the mass of the rocket which is also roughly the amount of mass in fuel that is required for the vehicle's re-entry. [83]