It happened to me yesterday. I was listlessly checking my email when I noticed a text ad that I must have seen more than 10, times. Yesterday I joined the masses. And let me tell you.
Stealth technology, small cargo hold, and a propulsion bus with high acceleration You get the idea. Pirate ships and privateers might forgo defenses if they only expect to be engaging unarmed cargo ships. But they will regret this if they have the misfortune to encounter armed enemy convoy escort ships or are surprised by a Q-ship.
One section is the propulsion bus — drive engine, reactor if any, solar wings or radiator fins, propellant tankage, and a keel structure to hold it all together. The other is the payload section that it pushes along from world to world.
There are both conceptual and economic reasons to treat them separately. Conceptually, because a propulsion bus might push many different payloads for different missions, such as light payloads on fast orbits versus heavy payloads on slow orbits. A little noticed but important feature of deep space craft is that you cannot overload them.
They do not sink, or crash at the end of the runway, or even bottom out their suspension. They merely perform more sluggishly, with reduced acceleration and for a Seperate but equal essay propellant supply less delta v. Conceptual logic is also economic logic.
The outfits that build drive buses would like to sell them to lots of different customers for a broad range of assignments. This is not necessarily an argument for true modular construction, with drive buses hitching up to payloads on an ad hoc basis like big-rig trucks and trailers.
Building things to couple and uncouple adds complexity, mass, and cost — plug connectors, docking collars, and so forth. Moreover, drive buses intended for manned ships need to be human-rated, not just with higher safety factors but provision for supplying housekeeping power to the hab, etc.
But these things, along with differing sizes or number of propellant tanks, and so forth, can all be minor variations in a drive bus design family. The payload we are most interested in is, naturally, us.
The main habitat section of a deep space ship closely resembles a space station. It is likely that habs intended for prolonged missions will be spun, for health, efficiency, and all round convenience. The design of a spin hab is dominated by the spin structure and — unless you spin the entire ship — the coupling between the spin and nonspin sections.
Habs are the one major part of a deep space ship that correspond fairly well to our concept of a hull. For those with bank cards at the ready, buying a deep space ship might be not unlike buying a computer.
If your mission needs are fairly standard, you check off options on a menu. Those with more specialized requirements can select major components — perhaps a drive bus from one manufacturer, a main crew hab from another, along with custom payload sections, service bays, and so forth, assembled to your specifications.
In fact, both technology and probable historical development suggest that fabrication and overall assembly will be two distinct phases, carried on in different places, quite unlike either shipyard or aircraft assembly practice.
In the early days, large deep space craft will be built the way the ISS was, assembled on orbit out of modules built on Earth and launched as payloads.
In time fabrication may move to the Moon, or wherever else, but final assembly at least of larger craft will continue to be done at orbital facilities. I call them cageworks, on the assumption that a cage or cradle structure provides handy anchoring points for equipment.
For game or sim purposes, my advice would be to treat drive buses and hab sections as the primary building blocks for ships, whether these components are permanently attached to each other or simply coupled together.
Both approaches might be in use. A couple of provisos. All of the above applies mainly to deep space craft, especially with high specific impulse drives. Ships for landing on airless planets have some similar features.
Ships that use rapid aerobraking, however, are aerospace craft and broadly resemble airplanes, even if they never land or even go below orbital speed. And I have said nothing of warcraft.Plessy v. Ferguson was a landmark U.S. Supreme Court decision that upheld the constitutionality of racial segregation under the “separate but equal” doctrine.
The case stemmed from an. Essay Question 1) How was the policy of “separate but equal” established and what exactly did it mean? Provide specific examples of how “separate but equal” was applied in the United States. The Segregation for Separate but Equal Essay - The Segregation for Separate but Equal 'Separate but equal' was an expression often used in the early 20th Century to describe segregation - keeping black and white people apart.
Ferguson decision introduced the "separate but equal" standard that legalized segregation until the Brown decision in Between and , a number of key cases challenged the Plessy v. The concept of “separate but equal” is not an unknown one, particularly not in the United States.
The belief that any group can be segregated from the whole based on specific physical. Lyrics and video for the song "Imagine" by John Lennon.