Tripoli I-Motor Altitude record

[Zebedee]

I've seen a few posts here and on facebook about this so I figured we could have some discussion on the current competition to push this record a little higher.

Originally Carvac held it with 10,200ft. I believe someone has recently flown to 12,300ft and is submitting paperwork to Tripoli.

I went to 13,755ft at Balls 24 with an I216 but my main failed to deploy and I popped a couple of fins landing at 100ft/s so no record for me yet.

Anyone else want to fess up?

Zeb

 

[Jimmy F.]

Build has been done since January this year. Just need to paint then fly.
I600 or I59? Probably both.
Current booster with the I600, short version for the I59.
Rocksim
I600 13,714 with long version
I59 15,218 with short version

 

[T34zac]

I've got one that I've built specifically for this. Carbon tube (home made), carbon fins, and CTI nose cone. Plan to fly it on an I216 at Red Glare of URRF. Expected altitude: ~15,200

 

[MarkH]

Adrian Adamson has the unofficial record at over 17,000 ft. Unofficial because with the rules in place at the time he was denied on the grounds of being an altimeter manufacturer.:

https://www.rocketryforum.com/showt...me-Altitude-List-is-back!&p=252476#post252476

 

[Zebedee]

That's really interesting - thanks. Too bad almost all of the links are dead now.

 

[Zebedee]

Build has been done since January this year. Just need to paint then fly.
I600 or I59? Probably both.

Nice - did you make the nose cone - it looks really... pointy

 

[prophecy]

Hey Martin,

Have you found a way to submit for a record via Tripoli these days? It's been suggested to me by several that I submit my Balls flight for a research record O motor record, but it seems all the links on the Tripoli page pertaining to records are dead.

Thanks & congrats on the awesome flights at Balls!

-s

 

[BLKKROW]

I have a design that I have been working on for a year that hits 17-18k feet. Now I just have to build it.

 

[T34zac]

I have a design that I have been working on for a year that hits 17-18k feet. Now I just have to build it.

Yeah I'd like to see that design. I doubt you'll get that high.

 

[BLKKROW]

Yeah I'd like to see that design. I doubt you'll get that high.

Me too, but just remember Adrian A hit 17k feet on an I motor.

 

[Zebedee]

Hey Martin,

Have you found a way to submit for a record via Tripoli these days? It's been suggested to me by several that I submit my Balls flight for a research record O motor record, but it seems all the links on the Tripoli page pertaining to records are dead.

Thanks & congrats on the awesome flights at Balls!

-s

Thanks Steve,

I was referred to someone on the Saturday at Balls to talk to about it but embarrassingly enough I've forgotten his name.
I would just ping tripoli via email or on their forum if you're a member.

Martin

 

[MClark]

Contact info is here,
https://www1.tripoli.org/About/Contact/tabid/66/Default.aspx

 

[RocketHunter]

Yeah I'd like to see that design. I doubt you'll get that high.

Even the 15K you estimate seems quite high to me for a normal elevation. What is interesting to me, though, is that Adrians J record in comparison to the I record is not nearly as crazy - as in, if I make a sim in OR that hits 17,400' on the I216, then lengthen it and adjust to optimal mass for a J530, I get just under 25K - way over what he got. The two flights were in the same weekend, so similar conditions - so I wonder what made the I216 flight so much more efficient?

 

[T34zac]

Me too, but just remember Adrian A hit 17k feet on an I motor.

But he also had an launch site elevation advantage of over 5,000'

 

[T34zac]

Even the 15K you estimate seems quite high to me for a normal elevation. What is interesting to me, though, is that Adrians J record in comparison to the I record is not nearly as crazy - as in, if I make a sim in OR that hits 17,400' on the I216, then lengthen it and adjust to optimal mass for a J530, I get just under 25K - way over what he got. The two flights were in the same weekend, so similar conditions - so I wonder what made the I216 flight so much more efficient?

Yeah I think 15k is high too, but my OR sims have always been low. That's makes me hopeful.

Maybe his J530 flight wasn't optimal mass. But even then the difference wouldn't be that much of a difference.

 

[Worsaer]

Contact info is here,
https://www1.tripoli.org/About/Contact/tabid/66/Default.aspx

Keep in mind that is the old Tripoli site with outdated info. You should refer to www.Tripoli.org/leadership for current contact information. The current chair of the records committee is Gerald Meux.

 

[RocketHunter]

Yeah I think 15k is high too, but my OR sims have always been low. That's makes me hopeful.

Maybe his J530 flight wasn't optimal mass. But even then the difference wouldn't be that much of a difference.

Interestingly, I flew a 29mm MD a while back with a conical NC to just under 10K, which was only predicted to hit just under 9K by OR. On the other hand, my flying cases usually seem to underperform - perhaps this is inherent to their design, and that regular streamlined MD's will go much higher. Either way, that thing should rip! How heavy did it come out to be, out of curiosity? I'd love to see some pics of the electronics too .

 

[T34zac]

Interestingly, I flew a 29mm MD a while back with a conical NC to just under 10K, which was only predicted to hit just under 9K by OR. On the other hand, my flying cases usually seem to underperform - perhaps this is inherent to their design, and that regular streamlined MD's will go much higher. Either way, that thing should rip! How heavy did it come out to be, out of curiosity? I'd love to see some pics of the electronics too .

All built with electronics and recovery, it was 8.5 oz. That has gone up to 9.4 oz when I added a layer of epoxy to the outside to smooth up the airframe. OR says optimal weight is around 12 oz, so I have a few to put on before its record worthy. And it uses a raven 3 and comspec radio tracker. No pics or secrets given away until it flies since this now a competition!

 

[SRP Crew]

Hi there,
Check out these records on the link below

 

[wfcook]

Charlie Ogino reports 13,675 ft at MWP:

https://www.rocketryforum.com/showthread.php?128680-Midwest-Power-XIII&p=1514625#post1514625

 

[JimJarvis50]

Charlie Ogino reports 13,675 ft at MWP:

https://www.rocketryforum.com/showthread.php?128680-Midwest-Power-XIII&p=1514625#post1514625

Good to see the interest in records. This I record was certainly available. Don't understand Charlie's interest in the K record though?? Much more difficult. He should just pass that one by - nothing to see here.

Jim

 

[ptrocketry]

Come to Colorado. Thin air One launch site with a 20K waiver is ~5,300 elevation and the other site which only has a 14,200' waiver sits at an elevation of 8,800'.

Edward

 

[T34zac]

Come to Colorado. Thin air One launch site with a 20K waiver is ~5,300 elevation and the other site which only has a 14,200' waiver sits at an elevation of 8,800'.

Edward

I'd love to make it out that way to attempt this, but I just don't have the money right now.