> <i>Instead of using tiny rocket thrusters (eg cold gas or hydrazine thrusters</i><p>Hydrazine is toxic [1], auto ignites at “24°C on a rusty iron surface” [2] and burns at over 2,000°F [3].<p>Cold gas or copter are better, though I’d personally consider springs with explosive bolts.<p>[1] <a href="https://www.ncbi.nlm.nih.gov/books/NBK592403/" rel="nofollow">https://www.ncbi.nlm.nih.gov/books/NBK592403/</a><p>[2] <a href="https://www.inchem.org/documents/icsc/icsc/eics0281.htm" rel="nofollow">https://www.inchem.org/documents/icsc/icsc/eics0281.htm</a><p>[3] <a href="https://ntrs.nasa.gov/api/citations/19680015493/downloads/19680015493.pdf" rel="nofollow">https://ntrs.nasa.gov/api/citations/19680015493/downloads/19...</a>