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Just remember guys, air density does not fall off in a linear fashion with increasing altitude. The roughly 3000 of difference between the north site and Hartsel causes a much greater fall-off in atmospheric density than the difference between sea…   Read more»

what motor is this John. Nother skinny 24mm?

My thought is a bit more direct. JW shows up with the same rocket, same motor, etc. as was flown at Hartsel. I’ll betcha a beer I can increment my Hartsel record. The rocket will be unmodified vs. Hartsel. When…   Read more»

Warren,Thats very interesting, I assumed RS used a lookup table or one of the eqns approximating density as fx of elevation sbove sea level. So has anyone played with what numbers produce the most accurate resluts for sims at North…   Read more»

Just remember guys, air density does not fall off in a linear fashion with increasing altitude. The roughly 3000 of difference between the north site and Hartsel causes a much greater fall-off in atmospheric density than the difference between sea…   Read more»

In the FWIW dept, The numbers you cite make sense–mine were for a g rocket, the differences should get smaller as the overall impulse gets greater.

I know this will sound suspicious coming from me, but I think to say that you can fly anywhere BUT Hartsel is not approriate, either. I say that because TCO and NCR have many common members, Hartsel is closer for…   Read more»

I guess I’m still unclear on why anyone would be opposed to NCR records set anywhere for any altitude, excluding Hartsel if thats an issue? (Con, at 100% RH and 110F temps a generic altitude rocket at North will just…   Read more»

My thought was the only eligible flights away from NCR venues would be those flights that exceed the standing waiver – not necessarily the higher altitude windows.Warren

Here is a thought. Two columns on the records page: the first column is for official club records set at an NCR site by an NCR member. The second column is for flights flown by NCR members at another venue…   Read more»

call em what you want–two sets of records, the simpler solution seems to me, Conway, is to have field records and club records, Hard to cry foul. I think in reality they would be the same. Exceptions would include over…   Read more»

My belief is that NCR records are records set by any NCR member at a recognized launch site regularly flown from. This prevents misguided members from travelling to the moon in hopes of establishing new records, or closer to home,…   Read more»

7 – Electronic Altimeters used to establish the maximum altitude must come from a list of “approved” electronic altimeters in order for the altitude to be declared official. They must be unmodified in any way (excluding minor hardware modifications such…   Read more»

My belief is that NCR records are records set by any NCR member at a recognized launch site regularly flown from. This prevents misguided members from travelling to the moon in hopes of establishing new records, or closer to home,…   Read more»

I guess in the end here, I should be clear and say this…A) NCR Club altitude records SHOULD be flown at NCR launch sites.==B) but don’t expect to fly a K to 28,000′ at BALLS and get credit for the…   Read more»

Yes, but I was just trying to get clairification which you did. It seemed like the list of records was rather lengthy but you explained it very well and it seems fair.Doug

Not quite Doug.There will be a single list for each of the categories in each impulse range with impulse definied as TOTAL installed impulse. The people who have made flights qualifying for a record will fill out a record form,…   Read more»

1 – NCR Club altitude records should, in general, be restricted to club members flying from the club launch sites with the sole exceptions being altitude shots requiring a greater waiver altitude than those at NCR venues. (Club Records)2 -…   Read more»

I think we’re gradually coming to a consensus on a number of contentious points here. Let me see if I can summarize.1 – NCR Club altitude records should, in general, be restricted to club members flying from the club launch…   Read more»

I don’t hold any altitude records and don’t really have any interest in the work it takes to launch or find high altitude/extreme rockets. However I would like to make a suggestion, how about two listings for Altitude records, a…   Read more»