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I used the time-independent acceleration equation, V(f)^2-V(i)^2 = 2adIn this case, after a fall of around 15 or 16 feet (around 4.9 meters), the velocity works out to be right at 9.8 meters per second, with a fall time of…   Read more»

What’s the math involved in this? Show me the formula since I must admit to forgetting all that stuff I learned in college – I finished engineering school (at least the ME portion) before you were born.Warren

Nope. Simply knowing the speed at impact and estimating the distance that it stopped in based on the amount of deflection needed to cause a crack of the kind observed in the tupperware container. Turned out to be about a…   Read more»

How did you figure the G load? Accelerometer and a computer data acquisition system?Warren

Just did some more drop testing outside for my latest method of egg-protection – got up to at least a few hundred gees impact (15 foot drop onto concrete). Something completely unexpected happened – I cracked the tupperware, but the…   Read more»

I’ve got a system worked out, and I think it should survive (after some feasibility drop testing on the deck just now )Heck – I may even spring for 54mm W9 😯

Sounds good, it would be worth it to see an egg survive a W9 load. Should be fun to watch, good luck!

I’ll look forward to frying up the aftermath for a late prarie breakfast :DHey you can have breakfast but, here’s the deal, if I do recover the egg intact, I get a photo op with egg on your face that…   Read more»

I’ll look forward to frying up the aftermath for a late prarie breakfast 😀

As present there is no competiton, but I think it would be a fun tack-on for MHM. I’m gonna fly a feasability in feb with a 2.6 inch payload section on a 38mm booster, MW altimeter.J

Heh…It would be the altimeter of choice for this contest (and of course I’m flying it). Honestly though, I’m more concerned about the NAR events for competition than the eggloft – I think that some of the events in the…   Read more»

Chris,The R-Das is still the state of the art on several dimensions, but pricey! But hey you deserve it. Get the folks to throw in a trip to Amsterdam on grad, and you’ll be in for a real treat. I…   Read more»

Yep, R-DAS tiny as my xmas gift this year. I was really happy when I opened the wrapping and the package said it was from the Netherlands 😀 No GPS and trimmings yet, though telemetry would be awesome…I wonder if…   Read more»

Hey – I’ll gladly fly a W9 egglofter, and I’ll guarantee egg survival too. It won’t be next month, but I’ll do it…The problem would be that I’m not sure I have electronics that will handle it – my R-DAS…   Read more»

Hey – I’ll gladly fly a W9 egglofter, and I’ll guarantee egg survival too. It won’t be next month, but I’ll do it…The problem would be that I’m not sure I have electronics that will handle it – my R-DAS…   Read more»

Bruce,Sorry to hear of the neurological problems. Hope this turns out well for you with the MRI.David Tjarks has sent out a message on the Crash site, so no worry there. I also talked a little while back with Jason…   Read more»

I think it’s a good list. Although I’m not really a serious competitor, I would definitely throw something together – possibly the glider or eggloft (the superroc would be a possibility, but a bit ambitious…). It definitely sounds like something…   Read more»

Okay, here goes. While the actual launch date still needs to be determined (April or June?), after this year’s launch dates are posted and we check with CRASH/COSROCS for launch date conflicts, whether we have an Open or Regional meet…   Read more»

Well, I appreciate that. Besides the temporary unemployment (should be resolved this month), some muscles in my right hand have atrophied, and it takes a lot to type anything. Long story short, muscles contract, so the ones that lift my…   Read more»

Indeed, a lot of guys helped but you did the foot work.JS