The past Nov 18 was the last launch, of Starship. The things didn't happen as planned. But all of us know that soon or later Spacex will make it a successful. It will be a long time before it can be reliable to carry a load similar to James Space Webb.
My question is: Why Spacex Starship is not a modular rocket ? Currently all the heavy lift rocket category are built in modular way, like:
Falcon_Heavy with 3 modules of 9 engines each one. ULA delta 4 heavy with three RS-68 engines one in each booster. Angará A-5 consists of one URM-1 core and four URM-1 boosters. Arianne 5, one core plus two solid fuel boosters. China Long March 5, one core and 4 boosters.
Is there any physics constraint related with the payload and the kind of mission for which it was designed ?
Because is really complicated feed and deliver oxygen and propellant to 33 engines.
And of course is more easy to do it if you have 3 block with 11 engine each, or 4 with 9 engines. Also short construction times. because you can have 3 hangars with many personnel working at the same time.
The company plain that the rocket is intended to be fully reusable, With 3 or 4 block the inertia moment in case of a vertical land is totally different. It even increases the likelihood of having a successful landing. And if one engine explode after separation at least you can recover the other boosters.
Can somebody give some what could be the technical reasons? I would ask Elon directly but I lost his phone number.