"[A rocket engine] is a heat and pressure machine whose end goal is to convert...heat and pressure into workable thrust. The more that gets converted the better. This conversion is usually done by a large bell nozzle...The further down the nozzle you go, the lower the pressure and temperature of the exhaust gets and the … Continue reading Aerospike Engines
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For Fathers of Daughters [and Anyone Concerned with Gender Equality]
"When I was pregnant with my third son a young colleague asked me whether I wanted a boy or girl. I responded that I thought that the role model pressure of having a daughter would be hard, so I would be more comfortable with a son. She wagged her finger at me and said, 'You … Continue reading For Fathers of Daughters [and Anyone Concerned with Gender Equality]
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