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The Perpetual MEGA Space Thread

Randy Daytona

Cold War Relic
pilot
Super Moderator
Approaching Saturn V size. Now we are getting somewhere.

In a newsletter, Bezos, who also owns The Washington Post, said the New Glenn rocket would come in two variants--a two stage and a three stage--that would be ready to fly by the end of the decade. Powered by seven BE-4 engines, they would have 3.85 million pounds of thrust at sea level. The rocket would be nearly as tall as the mighty, Apollo-era Saturn V that ferried the Apollo astronauts to the moon.

https://www.washingtonpost.com/news/the-switch/wp/2016/09/12/jeff-bezos-just-unveiled-his-new-rocket-and-its-a-monster/

 

Randy Daytona

Cold War Relic
pilot
Super Moderator
Fighter engine-size hypersonic ground demonstrator construction plans moving ahead

SABRE is at heart a rocket engine designed to power aircraft directly into space (single-stage to orbit) to allow reliable, responsive and cost effective space access, and in a different configuration to allow aircraft to cruise at high speeds (five times the speed of sound) within the atmosphere. If the rocket for space is not used then the US air force could use Skylon and SABRE engine technology to develop a 4000 mph hypersonic fighter plane or spy plane.


http://www.nextbigfuture.com/2016/09/fighter-engine-size-hypersonic-ground.html

Rumor has it this is the design... No word on laser cannons.

 

Randy Daytona

Cold War Relic
pilot
Super Moderator
Elon Musk wants to go to Mars. For those who grew up with the excitement of the Apollo program, this is long overdue. This may happen in our lifetime.

http://www.space.com/34210-elon-musk-unveils-spacex-mars-colony-ship.html

The ITS rocket will be more or less a scaled-up version of the first stage of SpaceX's Falcon 9 booster, Musk said. But the 254-foot-tall (77.5 meters) ITS booster will feature 42 Raptor engines, whereas the Falcon 9 is powered by nine Merlins. When combined with its crewed spaceship, the ITS will stand a full 400 feet (122 m) high, Musk wrote on Twitter. That would make it the largest spaceflight system ever built, taller even than NASA's legendary Saturn V moon rocket.

The Raptor engine, which SpaceX recently test-fired for the first time, is about the same size as Merlin but three times more powerful, Musk said. ITS will therefore be an incredibly potent machine, capable of lofting 300 tons to low-Earth orbit (LEO) — more than two times more than Saturn V could lift. (That's for ITS's reusable version; an expendable variant could launch about 550 tons to LEO, Musk said.)

 

Randy Daytona

Cold War Relic
pilot
Super Moderator
This will be interesting, especially for Mr. Scott. "I can't change the laws of physics."

The Impossible Propulsion Drive Is Heading to Space
Enough argument. It's time to actually test this crazy thing.
http://www.popularmechanics.com/science/energy/a22678/em-drive-cannae-cubesat-reactionless/


Follow up: NASA has tested it and it works.

http://www.nextbigfuture.com/2016/11/new-nasa-emdrive-paper-shows-force-of.html

New NASA Emdrive paper shows force of 1.2 millinewtons per kilowatt in a Vacuum and a low thrust pendulum and tests were at 40, 60 and 80 watts
 

Brett327

Well-Known Member
None
Super Moderator
Contributor
That's a huge step up from "EM Drives are pseudo science and anybody who believes in them should keep quiet."
There's a difference between pseudo-science and having a practical application from an engineering standpoint. I'm sure the science will mature over time, but 1.2 millinewtons ain't a whole lot of thrust given an input of 80 watts.
 

bert

Enjoying the real world
pilot
Contributor
Yes the math works, but you'll notice the article glosses over developing the factory at 140k feet.
 
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