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.
Lowering the orbit takes energy, too, unless you’re relying solely on atmospheric drag.
Sure, but you can safely deorbit something from Leo with like 100 m/s of Delta v, you just need to dip into the atmosphere and then drag does the rest. Getting something to a sufficiently high graveyard orbit is more like 2000 Dv split between two burns. You’d need to stay with the trash for half an orbit and then do the second half of your burn, and then presumably you’d need to travel back to your original point, costing another 2000 Dv.
All together, going up could take 40x more propellant than going down.
Sure, but you can safely deorbit something from Leo with like 100 m/s of Delta v, you just need to dip into the atmosphere and then drag does the rest. Getting something to a sufficiently high graveyard orbit is more like 2000 Dv split between two burns. You’d need to stay with the trash for half an orbit and then do the second half of your burn, and then presumably you’d need to travel back to your original point, costing another 2000 Dv.
All together, going up could take 40x more propellant than going down.