
He said it wouldn't be unreasonable to state that his $200.k drone truck can spray 1,000 acres per day. That's impressive. I bet this technical field will be huge.
Eric Welch Ph.D.
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@EricWelch42
Husband, father, engineering professor, general aviation pilot, fascinated by history, aviation and technology in general

He said it wouldn't be unreasonable to state that his $200.k drone truck can spray 1,000 acres per day. That's impressive. I bet this technical field will be huge.

Carl Sagan on Religion and God! “We must not believe because we want it to be true.”







Here are the last ATC communications between the final Spirit Airlines flight to land, flight NK1833, and Dallas/Fort Worth Airport (KDFW) Tower.





It’s always great seeing the Superbird out and about!



How do you communicate to a submerged nuclear submarine? Water attenuates HF radio waves. Answer: You build a 135 km long dipole antenna to drive a 76Hz radio wave yielding a rapid speed of 0.7 bits per minute.



This jet doesn’t have SATCOM & we’ll have to do HF radio calls to San Francisco once an hour. (Well, one of us will…)