You mis-spelled Babylon 5.We did... It was called Enterprise..
I'd mentioned a bit of that, the difficulty of sneaking into big cities. Also, our heroes would have to have ground vehicles for getting around. Looking at our technology, high-quality roads were rare until the early 20th cy. in industrialized nations, "high quality" here meaning permitting engine-driven vehicles to travel at typical present-day highway speeds. The best that anyone did before then was to use smooth or flat stones or sometimes logs (corduroy roads), and even those were not very common outside of cities.To give a more in depth response it would drastically change multiple plots render quite a few episodes impossible and would render the universe unrecognizable.
Not to mention no rescuing Captain Christopher.We would not have scenes in transporter rooms. No beaming up the security guard in Tomorrow is Yesterday and offering him soup. ...
An alternative is to land at some sizable distance then travel on the ground. One can also give oneself some stealth by landing and taking off at night. But one will then have to travel on the ground.You are facing a limitation of stealth with a shuttle. Landing a shuttle on many of the planets we saw on Trek would have violated the Prime Directive.
That seems rather contrived. I recently wrote a story in which someone heckles that episode withAnd the quick escapes would have to be reworked. No beaming Kirk out of the Constellation at the last second before exploding inside the Doomsday Machine.
There seemed to be only a single transporter in all of the TOS Enterprise, and transporter malfunctions were prominent parts of some of its episodes. Or else there were several of them and they all used the same transmission and reception module. Not very good design.Then as Kirk flies Decker's smashed-up ship into the planet-killer, and the Enterprise's teleporter fails to function, she shouted "Take a scout, dammit! Doesn't that ship have any working scouts?" referring to its shuttlecraft. Then Kirk gets teleported out as the last second. "Kirk must be super lucky."
From Tsiolkovsky's rocket equation, to consume less propellant, one needs greater exhaust velocity. But to get off a planet, one needs enough thrust to counter the planet's gravity. To date, it has been difficult to have both. There is the further problem that most existing high-exhaust-velocity engines only work in a vacuum.A shuttle would have to be a very efficient SSTO. I'm curious what future technologies could do to improve the ratio of payload to fuel.
One could use an air-breathing engine the final bit of the way, or even unfold a propeller to land like a helicopter.It's not easy being stealthy, when you have to burn your huge rocket engine to gently land your shuttle capsule on the planet's surface.
It is difficult to get much more exhaust velocity with chemical reactions. But alternatives may do better.Futuristic fuel compounds that provide better energy for the same amount of fuel.I'm curious what future technologies could do to improve the ratio of payload to fuel.
In the various Star Trek series and movies, most spaceships have artificial gravity, and that gravity seems to be always on. One may use that technology to make an antigravity drive, something suitable for powering a shuttlecraft. That could make such a vehicle land and take off in VTOL, helicopter-like fashion.Gravity nullifying systems similar to Star Wars repulsorlift or Star Trek anti-gravity units. I, personally, thing artificial gravity could very well be possible and a repulsorlift system would be application of that technology. Like a tractor/repulsor beam. Perhaps technology spun off of this: http://www.ru.nl/hfml/research/levitation/diamagnetic/
From Tsiolkovsky's rocket equation, to consume less propellant, one needs greater exhaust velocity. But to get off a planet, one needs enough thrust to counter the planet's gravity. To date, it has been difficult to have both. There is the further problem that most existing high-exhaust-velocity engines only work in a vacuum.
The best exhaust velocities of some chemical-rocket fuels, rounded off a bit -- hydrogen-oxygen: 4.5 km/s, kerosene-oxygen: 3.5 km/s, (hydrazine family) - (nitrogen-oxide family): 3.0 km/s, solid fuels: 2.5 km/s.
One can get much higher exhaust velocity with alternatives like ion engines. Dawn's do 30 km/s. But Dawn's engines have very wimpy thrust. Each of the three has a thrust of 90 millinewtons. In fact, the spacecraft's rocket engines were "on" for much of its travel time.
If the radius of our planet were larger, there could be a point at which an Earth escaping rocket could not be built. Let us assume that building a rocket at 96% propellant (4% rocket), currently the limit for just the Shuttle External Tank, is the practical limit for launch vehicle engineering. Let us also choose hydrogen-oxygen, the most energetic chemical propellant known and currently capable of use in a human rated rocket engine. By plugging these numbers into the rocket equation, we can transform the calculated escape velocity into its equivalent planetary radius. That radius would be about 9680 kilometers (Earth is 6670 km). If our planet was 50% larger in diameter, we would not be able to venture into space, at least using rockets for transport.
From Tsiolkovsky's rocket equation, to consume less propellant, one needs greater exhaust velocity. But to get off a planet, one needs enough thrust to counter the planet's gravity. To date, it has been difficult to have both. There is the further problem that most existing high-exhaust-velocity engines only work in a vacuum.
The best exhaust velocities of some chemical-rocket fuels, rounded off a bit -- hydrogen-oxygen: 4.5 km/s, kerosene-oxygen: 3.5 km/s, (hydrazine family) - (nitrogen-oxide family): 3.0 km/s, solid fuels: 2.5 km/s.
One can get much higher exhaust velocity with alternatives like ion engines. Dawn's do 30 km/s. But Dawn's engines have very wimpy thrust. Each of the three has a thrust of 90 millinewtons. In fact, the spacecraft's rocket engines were "on" for much of its travel time.
One could use an air-breathing engine the final bit of the way, or even unfold a propeller to land like a helicopter.
It is difficult to get much more exhaust velocity with chemical reactions. But alternatives may do better.
If one tries to get faster with a thermal system, one has a serious problem of keeping the engine from overheating. Existing chemical rocket engines also have that problem, though a successfully solved one.
A nonthermal system may avoid that problem, but there is still the problem of the interaction of the exhaust and the atmosphere.
In the various Star Trek series and movies, most spaceships have artificial gravity, and that gravity seems to be always on. One may use that technology to make an antigravity drive, something suitable for powering a shuttlecraft. That could make such a vehicle land and take off in VTOL, helicopter-like fashion.
For traveling on a planet's surface, it might be possible to use an antigravity version of jetpacks. One would hover over the surface and move across it.
Of course, for a sufficiently large planet, even chemical rocket engines become infeasible for actually leaving one's solar system See this page at NASA's site, for example:
Orbit would still be feasible at that point, but get a large enough super-Earth, or a thick enough atmosphere, and you might not even be able to achieve that. Our current technologies probably couldn't launch from Venus's surface out of the atmosphere even considering just atmospheric density alone, for example.
Though I'm wondering if some sort of inertial dampening system would pretty much be artificial gravity already.
Also, I still haven't figured out how this would work in a softer sci-fi FTL situation. Can you "accelerate" inside a warp bubble to provide artificial gravity, without it affecting your warp velocity?
You can't have "hard sci fi" trek without totally screwing up the premise and basic building blocs of the universe.
In my opinion,
Without warp your limited to the solar system and sleeper colonies, without transporters your limited to ground shuttles, without big ships and fancy tech the "grandeur" isn't there. Hard sci fi the way you want limits you to the solar system really.that's a perfectly valid opinion. Could you provide examples?
Obviously warp drive would be one of those things, unless you want a "Star Trek" that is set in the 1990s-2062. But that kind of runs contrary to the "Star" part of the title. "Sol Trek?" Earth's sun is a star though.
Having earth and/or humanity could be a basic building block. Though I can imagine stories without either.
We use essential cookies to make this site work, and optional cookies to enhance your experience.