Ship Design Philosophy

Discuss the Traveller RPG and its many settings
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Sun Jul 08, 2018 6:29 am

Mandatory Reading: Space Viking by H. Beam Piper

https://www.youtube.com/watch?v=VA4JkBdenxM

A galactic war has left the Terran Federation in ruins. Formerly civilized planets have decivilized into barbarism. Space Vikings roam the wreckage, plundering and killing for gain. Lord Lucas Trask of Traskon was no admirer of the Space Vikings, but when murder takes his wife on his wedding day, Trask trades everything he has for his own Space Viking ship and sets out on a galaxy-wide quest for revenge. (Summary by Mark Nelson)


Gives nuance to the piracy aspect.

Sadly, lacks Beam weapons.
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Fri Jul 13, 2018 8:32 pm

Spaceships: Could We Power Spaceships With Nuclear Energy Like Submarines? (Part 3 of 3)

We use nuclear energy to power submarines, but did you know it’s also used in spacecraft? What else uses nuclear energy?

https://www.youtube.com/watch?v=-RHrZdOwblg


Primer on radiation. And technological level six propulsion.
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Thu Jul 19, 2018 12:37 am

STUDY CONFIRMS: The Asteroid Belt WAS a Planet – Remnants of DESTROYED Planets

Study CONFIRMS that the asteroid belt was created from destroyed planets. Mainstream scientists have debunked themselves once again, previously denying any possibility that the asteroid belt was made up of a planetary collision... sometimes called those who suggested it “pseudoscientists”.

https://www.youtube.com/watch?v=hHhupGwPDK8


https://www.dailymotion.com/video/x69xztm
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Fri Jul 20, 2018 11:06 am

Spaceships: Engine originally designed for NASA's space shuttle​ is key to low-cost spaceplane

An unpiloted Phantom Express spaceplane climbs toward space on the power of a space shuttle-era main engine in this artist's impression. A smaller rocket attached to the spaceplane will be used to propel satellites into orbit while the winged booster flies back to a runway landing. Initial test flights are planned for 2021.

Boeing and Aerojet Rocketdyne successfully test-fired a space shuttle-era engine 10 times in 10 days, demonstrating the rapid turnaround capability critical to the Phantom Express, a reusable spaceplane, officials said Tuesday. The hydrogen-fueled engine that was tested was originally designed for NASA's space shuttle, which launched for 135 missions.

The Phantom Express, being developed by the Defense Advanced Research Projects Agency (DARPA), stands about 100 feet tall and tips the scales at 240,000 pounds. It will launch vertically using the AR-22 engine, then fly to altitudes of 40 to 60 miles and release an upper stage rocket to boost satellites weighing up to 3,000 pounds into orbit.

The unpiloted winged booster would then autonomously fly back to Earth and land horizontally on a runway like an airplane, ready for inspections and preparations for another launch in as little as one day.

The Air Force and Boeing already operate two small X-37B military spaceplanes that launch atop expendable boosters to carry out classified research in orbit. Like the Phantom Express, they return to runway landings, but they are not equipped with large engines, cannot launch on their own and are not designed to boost satellites into orbit.

"For this program, what we really wanted to do was design a system that was able to fly 10 times in 10 days," said Scott Wierzbanowski, Experimental Spaceplane program manager for DARPA. "This takes off the table the concern that a reusable spaceplane or a reusable booster can inherently be operable."

"We also wanted to design the overall system to be able to insert greater than 3,000 pounds into orbit at a cost of less than $5 million per flight. From our perspective, we figured that was kind of that sweet spot between large space lift and the small up-and-coming expendable systems that will allow us to have true military and commercial capability."

The reusable Phantom Express is designed to launch like a rocket and land like an airplane. A disposable upper stage, carrying a small satellite, is attached to the booster's side. BOEING
The Aerojet Rocketdyne AR-22 main engine was test fired 10 times between June 26 and July 6 at NASA's Stennis Space Center in Mississippi where similar RS-25 main engines are being tested for use in NASA's heavy-lift Space Launch System rocket.

The RS-25 engines are modified versions of surplus "block 2" powerplants left over from the shuttle program, while the Phantom Express engine was made up of older shuttle-heritage hardware that did not meet the more stringent requirements of the SLS system.

Even so, the idea of firing a complex shuttle main engine of any heritage a total of 10 times in 240 hours would have shocked shuttle engineers who devoted long hours to painstaking inspections and servicing between flights.

That's not surprising given a 7,000-pound shuttle engine generated more than 375,000 pounds of thrust at sea level with a hydrogen turbopump that spun at more than 35,000 rpm while generating 71,000 horsepower. The shuttle flew with three such engines while the Phantom Express will use just one.

For the 10 rapid-turnaround test firings, the AR-22 was operated at 100 percent power and throttled to as low as 80 percent during runs lasting at least 100 seconds.

Jeff Haynes, AR-22 program manager for Aerojet Rocketdyne, said the ability to fire the engine 10 times in 10 days was due to the company's long experience across the shuttle and SLS programs, which includes more than a million seconds of cumulative firing time and more than 3,200 starts.

"So we have a lot of data on the inspections that we need to run and how (many) of those have actually resulted in findings," he said. "We did do some boroscope (inspections of turbine blades), we did some torque checks on some of the turbo machinery and we did nozzle leak checks and things like that. But we did not do the typical shuttle profile of pulling the pumps from the engine and doing a detailed inspection."

In addition, he said, "we have significant instrumentation that allows us to know when we are getting into issues and we have redlines that allow us to abort in that scenario. So we felt that running up to those points would be sufficient, and it was successful. So that is the approach we are taking going forward."

Haynes said enough components are available to build a second flight-qualified AR-22 engine and that the test article used in the fast-turnaround tests also could be used for flight.

The program hopes to launch the Phantom Express on its first test flight in 2021. Managers have not yet selected a design for the disposable upper stage or settled on a home base for the spaceplane.

https://www.cbsnews.com/news/boeing-pha ... paceplane/
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Tue Jul 24, 2018 10:23 am

Spaceships: How we can turn the cold of outer space into a renewable resource | Aaswath Raman

https://www.youtube.com/watch?v=7a5NyUITbyk

What if we could use the cold darkness of outer space to cool buildings on earth? In this mind-blowing talk, physicist Aaswath Raman details the technology he's developing to harness "night-sky cooling" -- a natural phenomenon where infrared light escapes earth and heads to space, carrying heat along with it -- which could dramatically reduce the energy used by our cooling systems (and the pollution they cause). Learn more about how this approach could lead us towards a future where we intelligently tap into the energy of the universe.


Point the dark side of the spaceship away from the sun, and use the opportunity to panel the other side with solar cells. If an atmosphere is a requirement, blow up fuel condom with air on the dark side.
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Sat Jul 28, 2018 12:23 am

Spaceships: The Truth about Hydrogen

https://www.youtube.com/watch?v=f7MzFfuNOtY

More than one way to skin a cat, or power a ship.

I'd say that solar panelling would provide the transformative energy.

You might not want to light off a fusion reactor, especially if you're in silent running. And you have all that hydrogen tanked away anyway.
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Mon Jul 30, 2018 11:29 pm

Spaceships: A new way to remove CO2 from the atmosphere | Jennifer Wilcox

Our planet has a carbon problem -- if we don't start removing carbon dioxide from the atmosphere, we'll grow hotter, faster. Chemical engineer Jennifer Wilcox previews some amazing technology to scrub carbon from the air, using chemical reactions that capture and reuse CO2 in much the same way trees do ... but at a vast scale. This detailed talk reviews both the promise and the pitfalls.

https://www.youtube.com/watch?v=XY_lzonfE3I


Neither energy nor heat would appear to be difficult to obtain on our spaceships.

A synthetic forest five hundred times more effective than a biosphere?
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Fri Aug 03, 2018 8:25 pm

Spaceships/stations: What's the Most Realistic Artificial Gravity in Sci-Fi? | Space Time | PBS Digital Studios

2001: A Space Odyssey introduced a lot of people to the idea of rotation based artificial gravity, but in sci-fi, it’s far from the only one to implement the idea! Babylon 5, Halo, and Ringworld also used rotation-based artificial gravity in their stores, but, being an astrophysicist I had to ask, WHO DOES IT BEST? And more importantly, is artificial gravity in space possible? And I’m talking outside of your artificial gravity in Kerbal Space Program (but we may get there).

https://www.youtube.com/watch?v=EHKQIC5p8MU


I'm going to go with forward velocity and tailsitter/skyscraper.
Condottiere
Chief Mongoose
Posts: 6277
Joined: Mon Sep 23, 2013 8:23 pm

Re: Ship Design Philosophy

Postby Condottiere » Sat Aug 11, 2018 5:52 pm

Spaceships: Armaments and The Death Star's OTHER Fatal Flaw

Everyone knows that the Death Star had a critical weakness which allowed the Rebels to win, but was there ANOTHER one that would have finished it off well before that? Kyle stays on target on this week's Because Science!

https://www.youtube.com/watch?v=K6-q2edmiGk


So, about that energy output from our spinal mounts and the prevailing belief it's a recoilless cannon ...

Who is online

Users browsing this forum: Greg Smith, Hansdampf and 5 guests