How High was Your Level TWO Certification Flight?

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Bruce

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What's the highest altitude you've heard of for a Level 2 Certification Flight?

What motor was used?
 
My 2.6" Madcow Arcas kit simmed to about 5900 feet on a J285. I didn't have an altimeter on it, so I can't confirm or deny that altitude. The delay was pretty good, so it was probably close though.
 
What's the highest altitude you've heard of for a Level 2 Certification Flight?
More of a philosophical question than one of physics. You could easily exceed 20,000 feet with a long-burn K and a 54mm MD rocket. I personally didn't/wouldn't do that for a cert flight, but YMMV.
 
Mine was 11,761' on a Loki K350 (moonburner).

yep,
s6


oooops, I just reread your actual question. I thought you were asking what our own L2 altitude/motors were, not the highest we've ever heard of. I'm sure lots of folks have topped my own, which (as mikec noted) is of course totally doable.
 
My L2 went about 3800ft (OpenRock Sim) with my Warlock on a K535W DMS, was super awesome until the chute release didnt release 😭
 

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Mine was a little over 24k feet with a 54mm MD on a CTI L935
 
Actually the damage isnt too bad, fell pretty horizontal and didnt even pop a fin, i had fiberglassed the airframe so just needs some minor patching and paint touch up, she will fly again :)
Shew! That's an awesome rocket, glad it made it through alright.
 
To answer the thread title:

My L2 flight specs are in my sig, 4000'. 4" madcow super DX3 "lead sled". I used a 38mm Loki J320 red motor. I have a build thread that lays out the project.

https://www.rocketryforum.com/threads/madcow-super-dx3-cardboard-and-plywood-kit-38mm-mmt.147205/
As for the original post:
I bought the MC 54mm MD Tomach a while back and someone used that for there L2 on a CTI 6xl L motor to 24,000'.

As for max altitude for a L2 motor, that would be a 54mm MD carbon fiber bird on the Loki 54mm L2050 white motor with tailcone. I have a sim file for this setup in OR to 42,000' and plan to make a run at the Tripoli L altitude record with that motor in 2022. I will be flying the smaller 54mm Loki L1040 red motor next year to 28,000'-30,000' to test my ability.

~John
 
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To answer the thread title:

My L2 flight specs are in my sig, 4000'. 4" madcow super DX3 "lead sled". I used a 38mm Loki J320 red motor. I have a build thread that lays out the project.

https://www.rocketryforum.com/threads/madcow-super-dx3-cardboard-and-plywood-kit-38mm-mmt.147205/
As for the original post:
I bought the MC 54mm MD Tomach a while back and someone used that for there L2 on a CTI 6xl L motor to 24,000'.

As for max altitude for a L2 motor, that would be a 54mm MD carbon fiber bird on the Loki 54mm L2050 white motor with tailcone. I have a sim file for this setup in OR to 42,000' and plan to make a run at the Tripoli L altitude record with that motor in 2022. I will be flying the smaller 54mm Loki L1040 red motor next year to 28,000'-30,000' to test my ability.

~John
I'm working on a L2050 Min diameter project that should be going to Xprs in 2021. Im simming about 51k. Though I'm debating on going with the M1378, even though it is an L3,aerodynamic stresses are smaller, and more altitude. :p
On that note im doing it rather ambitiously, but may the best 54/4000 win! ;)
 
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My L2 flight was only 1383 feet on a J500G... Nice and low! textbook flight.
 
Do you mean 20 seconds? If you got to 7,000' in two seconds, you would be coasting for a really long time afterwards...
After 2 seconds it was gone so other than a sim... I have absoultley no clue. 🤣🤣🤣🤣 it just went very very very fast. O
 
Mailing tubes, wood glue, and a Big Daddy nosecone on a j270w to about a half mile. Launched from the 40's pads, picked up at the 60's.
 
Of course, I had to do it the hard way. I used a Hypertek J-315 hybrid motor in a minimum diameter rocket. The rocket was 8 feet tall. I got about 6300', but on the way up, it looked like an undulating snake. I thought it might fold in half. It survived just fine, but I never flew it again. Phil L.
 
5,999 according to the RRC3 that was on board. Motor was a K740 in a 4" diameter fiberglass rocket. Nothing optimized for altitude at all, but if I were to do it all over again, I'd try and go as high as the waiver allowed.
 
My L2 @ Bong 06.01.19
Mach 1 Rim-66 on a AT K513FJ-14
OpenRocket simmed it at 8,100+ ft. , Mach 1.27
My EggFinder reported 8,500+ ft. before it lost tracking. Reaquired GPS after landing, but it was spotty.

L2 Cert - RIM-66_Small.png RIM-66 Cert Flight - Launch [AT K513FJ-14]-Small.jpg RIM-66 Cert Flight - Wet Landing-Small.jpg RIM-66 Recovery Inspection-2-Small.jpg
 
7000 Feet on a 4" diameter Dangerous Dave Gawlic's Fiberglass Mad Dog on a K550, back in 1993 as best I can recall. It was in Three Oaks, Fall launch. Much fun.
 
I didn't fly mine with electronics, but I estimated 4000'+ on a K550: Praying Mantis.

I've heard a few times of people wanting to set a record on their L3, but can't say I know of any set on an L2 flight.
 
I've heard a few times of people wanting to set a record on their L3, but can't say I know of any set on an L2 flight.
I managed to set an N record on my L3 cert flight back in 2006 (34K). That record didn't hold up for long, but to the best of my knowledge, it was the highest certification flight for about a decade until it got smashed in 2017 (a flight to 64K). Anyone wanting to set an L3 certification altitude record is going to really have to work for it.

My L2 was on a PML Nimbus. It went to 9300 feet on a CTI J295. A very nice rocketeer, Ray Kinsel, lent me a tracker for that flight, but I didn't even reallize that I was supposed to track the rocket during the flight. Fortunately, I managed to catch a glimps of it on the way down so I knew the general direction to walk. After walking a couple of miles, I finally picked up a signal, kept walking, and found the rocket. If not for the tracker, I wouldn't have gone far enough to find it. I flew the rocket a couple more times on the J295 and then tried the K445. For some reason, the tracker I used for that flight didn't work after landing and I lost the rocket in the jungle at Hearne. Nearly two years later, it was found, and the altimeter actually powered up and I was able to download the file (that was the last gasp for the altimeter though). But I learned that the flight was my first 10K+ and > Mach 1 flight.

I have no idea what the highest L2 flight is, but I was not aware of the two flights posted earlier in this thread. I don't know the details of Justin's flight but an 54mm MD flight to 24K is pretty extreme.

Jim
 
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