Honda Global | Honda R&D Co., Ltd., a research and development subsidiary of Honda Motor Co., Ltd., today conducted a launch and landing test of an experimental reusable rocket*1 (6.3 m in length, 85 cm in diameter, 900 kg dry weight/1,312 kg wet weight) developed independently by Honda. The test was completed successfully, the first time Honda landed a rocket after reaching an altitude of nearly 300 meters.
You are missing the point that size makes a difference. Obviously SpaceX has the technology to do what Honda did, but SpaceX can do ti with a real rocket.
But they can’t do it with the bigger Starship rocket. Scale matters.
Size is only a proof of logistics. Not tech. Physics don’t change fundamentally between 6 meters and 120 meters. You learn a lot from scale modeling without the added costs. Starship’s real challenge is actually the logistics necessary to fulfill the desired specifications and experimenting with engineering to reach the scale. The most innovative aspect of Starship would be orbital refueling, and they aren’t there since the thing hasn’t reached orbit yet. SpaceX problem right now is insisting on high turnover engineering, which doesn’t work at scale without heavy costs, because it is a logistic problem, not a engineering problem.
Physics don’t change fundamentally between 6 meters and 120 meters
Yes it does. Mass to strength ratio of structural components changes with scale. So does the thrust to mass ratio of a rocket and its fuel. So does heat dissipation (affected by ratio of surface area to mass).
And I don’t know shit about fluid dynamics, but I’m skeptical that things scale cleanly, either.
Scaling upward will encounter challenges not apparent at small sizes. That goes for everything from engineering bridges to buildings to cars to boats to aircraft to spacecraft.
You are missing the point that size makes a difference. Obviously SpaceX has the technology to do what Honda did, but SpaceX can do ti with a real rocket.
But they can’t do it with the bigger Starship rocket. Scale matters.
And when SpaceX does it with real full size rockets and they explode scattering debris and chemicals everywhere, the nearby towns pay the price.
I don’t see any towns being decimated by Honda’s approach.
Size is only a proof of logistics. Not tech. Physics don’t change fundamentally between 6 meters and 120 meters. You learn a lot from scale modeling without the added costs. Starship’s real challenge is actually the logistics necessary to fulfill the desired specifications and experimenting with engineering to reach the scale. The most innovative aspect of Starship would be orbital refueling, and they aren’t there since the thing hasn’t reached orbit yet. SpaceX problem right now is insisting on high turnover engineering, which doesn’t work at scale without heavy costs, because it is a logistic problem, not a engineering problem.
Yes it does. Mass to strength ratio of structural components changes with scale. So does the thrust to mass ratio of a rocket and its fuel. So does heat dissipation (affected by ratio of surface area to mass).
And I don’t know shit about fluid dynamics, but I’m skeptical that things scale cleanly, either.
Scaling upward will encounter challenges not apparent at small sizes. That goes for everything from engineering bridges to buildings to cars to boats to aircraft to spacecraft.