[Professor Mega-Mind (OP)]

The asteroid-grabbers !.......D.

[Bored chemist]

"

Alright , I have to backtrack a bit .  Convertalot is backing up that 2x bit ,

"
I think what you mean there is that you have to admit that practically your entire thread has been a stupid mistake. Every post was a waste of bandwidth which could have been avoided if you had done what you were told at the outset and actually learned some stuff.
Presumably  you now understand that you are going to be written off as "The guy who was too dumb to realise he was dumb".

Call this a friction engine

In space, not only can nobody hear you scream, but there's no friction.

Eventually, you might recognise that heating one wall of the ship (by whatever means) will cause it to emit  more radiation than the cold side  and that will produce a net thrust.
It's hard to imagine a stupider way to heat the back of your ship than repeatedly throwing bean bags at it.
So the answer to " What is the best spaceship design?" is
Almost anything except what P M-M suggests.

[Professor Mega-Mind (OP)]

Hey , if it works for Guido Fetta , it's worth a shot , right ?  Beside , I'll keep butting my head against that wall , just to see what else falls off.  Remember , preconceptions preclude discovery .  Meanwhile , the best close options are the Impulse Drives discussed in other threads .
OK , study,study,study !
P.

[Bored chemist]

if it works for...

It doesn't
It never will.

OK , study,study,study !

I presume that's a "note to self", in which case it's a good idea.

[Professor Mega-Mind (OP)]

I'll let y'all know in 300 years .  Until then it's reaction engines for me , yeehaw !
D.

[Bored chemist]

I'll let y'all know in 300 years .  Until then it's reaction engines for me , yeehaw !
D.

You have a nonsensical thread on them too.

[Professor Mega-Mind (OP)]

...........Spaceship Engines .
 Drive comparisons are at :
"Can An Impulse Engine Be Made?"
P.M.

[Bored chemist]

...........Spaceship Engines .
 Drive comparisons are at :
"Can An Impulse Engine Be Made?"
P.M.

Nonsense can be found here
https://www.thenakedscientists.com/forum/index.php?topic=74724.0

[Professor Mega-Mind (OP)]

"The future belongs to those who make it !". 
"The Expanse" wii happen soon enough !
P.

[Bored chemist]

"The future belongs to those who make it !". 
"The Expanse" wii happen soon enough !
P.

And you don't "make the future" by wasting time on drivel like yours.

[Professor Mega-Mind (OP)]

"If you don't have anything good to say , it's best to not say anything ."
 That is such good advice , let's follow it in these threads , eh ?
P.M.

[Bored chemist]

"If you don't have anything good to say , it's best to not say anything ."
 That is such good advice , let's follow it in these threads , eh ?
P.M.

It's a pity you didn't do that at the outset, isn't it.

[Professor Mega-Mind (OP)]

Let's all be clear that my ultimate motivation , and goal , is to find promising avenues to solutions for these space travel problems .
P.M.

[Bored chemist]

Let's all be clear that my ultimate motivation , and goal , is to find promising avenues to solutions for these space travel problems .
P.M.

That's nice.
Do you think that the best path to that goal is to not bother to learn anything about the subject and continually rant about stuff that's known to be impossible?

[Professor Mega-Mind (OP)]

Unorthodox opinions voiced outside-the-box .
P.

[Professor Mega-Mind (OP)]

I will now rant ( examine ) a near-term possibility which could lead to a reactionless drive . 
Imagine that I have a 1.35 GW photon rocket .  It produces 1lb of thrust .  I pass the light-beam through a special Light Mutator , which changes the internal form of the light into something that the electrons of my "reciever" cannot absorb .  This light expends much of it's stored energy impacting the surface , not heating it . This could concievably produce thrust above 1Mlb , depending upon the  efficiency of the "Heavy Light" conversion , and impacts .
The other possible path is further down the road .  It involves accessing the quantum substance of space-time itself .  This unlocks the possibilities of anti-gravity , artificial gravity , and reactionless propulsion .
These two approaches , vigorously pursued , are likely to yield good results within the next century or two .  A worthwhile effort to secure such powerful new technologies .
Alright , path revealed .
P.M.

[Bored chemist]

Unorthodox opinions voiced outside-the-box .
P.

It's not a matter of "Unorthodox opinions ..."
It's a matter of you saying stuff that's simply not true.
It's like having the "opinion" that the capital of France is in the southern hemisphere

[Kryptid]

This could concievably produce thrust above 1Mlb

Based upon what calculations?

[guest39538]

Re: What is the best spaceship design?

One  that  works !

[Professor Mega-Mind (OP)]

Gentlemen ,
The thrust of the thread is the quest for near-future spaceship architectures .I stated the question as I did because we don't have real spaceships yet , and will not without major conceptual and technological advances .  This is what I am questing for .
P.M.