I am not a Professional Aerospace Engineer; and, I am not in Social Contact with an Professional Aerospace Engineer.
Thus, my understanding of Real Life Spacecraft Design & Technology comes from The New Media Industry: Newspapers; and, News Magazines; and, TV Documentaries; and, Books.
I was born in the 1960s; thus, The Internet hasn’t been my Source Of Knowledge concerning Spacecraft.
Most of my views concerning Spacecraft Design is based on The Multi-Media Industry’s Outerspace Science-Fiction Genre Publications: the 1970s Battlestar Galactica; and, Space: 1999; and, the Original Star Trek TV Series; and, Star Blazers; and, Star Wars IV & V & VI.
However, I have watched other Outerspace Science-Fiction Publications as well: the Original Lost In Space TV Series; and, 2001: a Space Odyssey; and, The Blue Crystal; and, the Original (the 1st four Doctors) Doctor Who TV Series; and, Alien; and, the 1970s Buck Rogers Of The 25th Century TV Series; and, whatnot (too many to count and remember at this time; which includes, 1940s & 1950s & 1960s Movies).
I became a Roleplaying Game Player (RPGer) in 1982 with Dungeons & Dragons (The Red Book Rules) roleplaying Game System. I became a Hardcore RPGer in 1984 playing Advanced Dungeons & Dragons (1st Edition aka Gary Gygax Edition). In 1985, I branched out to Outerspace Science-Fiction Roleplaying Games: (c)1980 Traveller: Science-Fiction Adventure In The Far Future; and, Star Frontiers (2nd Editon).
I grew up as a Pre-Teen, I had watched the TV Documentary “The History Of Space Flight” half a dozen times. I was into “The History Of Space Flight” as much as I was into the Godzilla Movies & TV Series of that same time period.
Thus, as a High Schooler, I started seeing the disconnect between Real Life Spacecraft Designs and the Science-Fiction Spacecraft Designs; and, there were no Roleplaying Game Systems that allowed for “Modern Day” Outerspace Science-Fiction Adventures using “Modern Day” Spacecraft Technologies.
In 1985 & 1986, I envisioned New Real Life Spacecraft Designs based on what I called Orbit-To-Orbit-Only Spacecraft that would be researched and developed from the APOLLO CSM/LM Spacecraft Design; because, the APOLLO CSM/LM Spacecraft was the only Earth Human Spacecraft Design to have repeatedly taken a number of Earth Humans to another Celestial Body (Luna) and back to Earth.
In 1985 & 1986, I referred to this Spacecraft Design Concept as “The Next Generation Of MERCURY And GEMINI And APOLLO Spacecraft Designs”. In 1993, I Officially Named this Spacecraft Design Concept the “FLOWER CHILD PROJECT”.
The Concept is basically a process of researching and developing Exploration Spacecraft Designs and Outerspace Tourism Spacecraft Designs; so that, eventually, Spacecraft Designs that can allow for Earth Human Civilian Colonization Of Mars will become possible.
However, based on my Knowledge & Understanding of Earth Human History and of Earth Human Military Technology, I believed in 1985 & 1986 that my Spacecraft Design Concept would allow for the development of Real Life Outerspace Combat Spacecraft Designs; even though, I was opposed to The Militarization, And/Or The Weaponization, Of Outerspace.
The USA’s Star Blazers, aka Japan’s Space Battleship Yamato, Outerspace Science-Fiction Publication is the only Outerspace Science-Fiction Spacecraft Design that is based on Real Life Earth Human Technology; albeit, Japan’s World War Two Battleship “Yamato”.
Real Life Outerspace Warfare is impractical with Present Day Spacecraft Design Technologies.
I have made various Blender 3D Projects using Japan’s WW2 Battleship “Yamato” Hull Volume for representing the realities of what is needed for Real Life OTO-Only Spacecraft Designs; as well as, representing the realities of Present Day Military Technology in relation to Outerspace Warfare.
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This is my Blender 3D Project comparing Japan’s WW2 “Yamato” with my Blender 3D version of my DeltaCAD 3.0 “Maintenance” Space Station Design Concept.
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This is my Blender 3D Project comparing Japan’s WW2 Battleship “Yamato” to the Saturn V S-IC Booster Stage.
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This is my Blender 3D Project that attempts to provide Japan’s WW2 Battleship “Yamato” Hull with an Outerspace Propulsion System using the Saturn V S-C Booster Stage as the Main Propulsion System.
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These Projects in combination do reveal how far we Earth Humans have to go technologically before Orbit-To-Orbit-Only Spacecraft Designs, and Earth Human Civilian Colonization Of Mars, can actually occur.