7 ms·
Ummmm. In 2007, near a certain defense contractor, we demonstrated a 319'-wire trebuchet mounted horizontally but slight vertical a-skewed for distance/aiming.
by egberts1 1mo ago
Ummmm. In 2007, near a certain defense contractor, we demonstrated a 319'-wire trebuchet mounted horizontally but slight vertical a-skewed for distance/aiming.
Used a gnarly large helical gear but with integral diminishing ratio.
Gravity-powered in same way but with a 20-meter-ish tower. (Cheaper than a standard 800'-tall trebuchet.)
At release time, achieved 10 G-force (payload goal), it's velocity speed was audibly a speed of sound (arguably higher, math says Mach 2.7).
That was our lunchtime project, all started from several stage bets, a napkin diagram, and different loser(s) pay for weekly food deliveries.
Even demonstrated to some brass from an unrelated project.
Fun-time.
Oh, yes, lest I forget, bunker-required for safety (where exactly would you stand?).
- dnemmers 1mo agoWould love to see some photos in action, but 2007..defense contractor...makes me think photos may have been frowned upon.
- egberts1 1mo agoDone on company property. Design Owned by company. We did not object for maximum marketing.
- felooboolooomba 1mo agoGood old days. I'd love to see the design for that one. Any chance?
- egberts1 1mo agoNapkin, someone literally used it at lunch time. Some of us ribbed him: "Destruction of classified material!", "call Security!", "PM's (program manager) behind you". No. Wasnt classified, but company-owned. There are clues above.
- xnx 28d ago> standard 800'-tall trebuchet. As tall as the Golden Gate Bridge?