200K 2 stage flight

Tony

That's incredible. I love how the entire earth almost fits in the frame at apogee.

Wow

Wow, spectacular! Curt is very talented and a heck of a nice guy. I was camped next to him and his wife at BALLS some years back. He really knows his stuff and has a great attention to detail.

Holy cow!

Very impressive flight. Does anyone know which motors he used? Based on the thanks he gave at the end of the video to AMW and CTI and his PHX4 flight in 2015, I'm guessing it was an N3301 to an N1100.

N5800 - N1100 IIRC

Tony

Wow... stunning views. Would love to hear more about the design of this beast. Almost surreal how quiet it gets when these high altitude projects get waaaay up there.

Amazing!

He builds some amazing stuff. I would love to see an article on this rocket.

Is it fair to say that Curt Von Delius May well own all the motor altitude records in a few years? Look at this flight, or even his J record. He seems to not only beat existing records but tends to smash them.

muddymooose said:

That's incredible. I love how the entire earth almost fits in the frame at apogee.

Click to expand...

And the Black Rock Desert is bigger than I thought. It takes up almost the entire hemisphere, lol

Spectacular!

Wow...simply wow. Incredible job to the team for continuing to push the barrier of what’s possible!

Fantastical! I wonder if that was a ring drogue chute and how apogee deployment time was determined. I've heard that getting the apogee deployment on such high fliers just right takes a lot of work and planning to avoid too early or too late
deployment. I guess in that rarefied environment, the risk of a shred is decreased since there t'ain't much air up there anyways. The only people who get that first person view are astro/cosmonauts and a few X-15 pilots of yore.
Kurt

Serious acceleration if my eyes were correct at watching the time code on youtube it was < 12 secs to over mach 2. thats some ants in the pants

Some serious vertigo inducing rolls. Well done and congrats to all involved.

The video proves the Earth is round and not flat.

dshmel said:

The video proves the Earth is round and not flat.

Click to expand...

lol, while I was watching it I was just thinking how the flat earthers are going to have a field day with this one.

Tripoli and NAR members > Flat Earthers.

One giant leap for Amateur rocketry.

dshmel said:

The video proves the Earth is round and not flat.

Click to expand...

Nope, it's clearly potato chip shaped.

grouch said:

Nope, it's clearly potato chip shaped.

Click to expand...

I was thinking more like a saddle, but you're right. It's shaped like a pringle. I shall get a hammer and adjust my globe accordingly.

Is there a pic of the entire rocket anywhere?

grouch said:

Wow

Click to expand...

THIS...

Thanks for sharing Tony! What a great flight!

Anyone know what camera was used to take this video?

mpitfield said:

lol, while I was watching it I was just thinking how the flat earthers are going to have a field day with this one.

Click to expand...

With a wide(enough)angle lens everything "looks" round.......

HI all,

I've been attempting to find more details on Curt's flight and I kicked off a thread on our Australian Rocketry Forum as a place to consolidate info. A recent reply was quite interesting imo. First off, a reddit thread made mention that a BRB 70cm 100mW GPS tracker was used in the flight. I was discussing this with a club member last weekend and he made mention that the uBlox Max-7Q chipset was only capable of reporting a valid GPS fix up to 50,000 meters. Given Curt's estimated apogee was much higher I assumed that this 50k meter limit wasn't enforced. It appears I was wrong as a uBlox forum post pretty much completely contradicted my assumption.

Forum post in question can be found here.

https://forum.u-blox.com/index.php/2310/will-max-7q-give-valid-gps-fix-including-altitude-above-000m

And the relevant quote...



So I guess my question is, does anyone know how Curt derived his 244,186' above MSL apogee estimate?

Not sure but I believe GPS. I am in collaboration for the electronics package for a Balls project that will well exceed 50KM. Our other developer who is working the GPS side (details will be announced after Balls) is sure and has data that a ublox chipset will give good data up to and and exceeding 200K feet. The only wrinkle is that ublox performs ionospheric correction that would be incorrectly applied above 50km, thus the accuracy would not knowable at those altitudes.

We'll know for sure after BALLs.

Also, other than a "statement" of altitude has any actual DATA been submitted to the TRA records committee for peer review?

jderimig said:

Also, other than a "statement" of altitude has any actual DATA been submitted to the TRA records committee for peer review?

Click to expand...

That is a good question.