- Sep 16, 2015
- Reaction score
I don’t know what they did for Apollo but the Project Echo ”satelloons” we’re literally giant aluminized balloons launched into LEO and inflated so radio signals could be bounced off of them. The article I read only said they used gas generating reactant chemicals but not what they were. Fun facts - Echo 1 stayed in orbit for nearly 8 years! The giant rotating horn antenna developed for the ground station part of Project Echo detected the first evidence of background radiation predicted by the Big Bang theory.Oh man... I so want to see a "Bench Test" of this.
I wonder how NASA did the inflatable balloons on the Apollo capsule?