BYU PASCAL

Twitter account for the @BYU Physics and Aerospace Student-Centered Acoustics Laboratory, advised by @KentLGee and housed in @BYUPhysAstro.

[Kent Gee @KentLGee]

Will be taking @BYU_PASCAL students to measure the noise. Most powerful single rocket ever built.

[Kent Gee @KentLGee]

You guys! @thejackbeyer from @NASASpaceflight is in the @BYU anechoic chamber recording his weekly Starbase update. Be sure to watch the video when it drops on Monday!

[Kent Gee @KentLGee]

Anechoic chamber details. Anaerobic: no oxygen. Anechoic: no echoes. The wedges are 3 ft deep fiberglass batting covered with perforated sheet metal that absorb sound up between 80 and 20,000 Hz. And that is a 65 yr old wire mesh floor with wedges below. Other Qs?

[Mark Anderson @AerospaceMark]

Great to spend some time with Jack today. Looking forward to continuing to do work together in the future!

[Mark Anderson @AerospaceMark]

Why does the Falcon-9 booster make a triple sonic boom?

New research by myself and @KentLGee explains why this happens! Go check it out!

https://t.co/UYYVa6uoZb

Here are the three shocks:

1. Comes from the bottom of the booster near the engines. All supersonic objects make a front (or “bow”) shock. Because the rocket is falling engines first, the engine section is considered the front of the vehicle.

2. Comes from a combination of a rarefaction wave produced near the bottom of the booster (including, but not limited to, the folded landing legs) and a compression wave produced by the extended grid fins. These two waves merge and form a single shock in the middle of the sonic boom (actually, about 2/3 of the way through the boom in measurements).

3. Comes from just behind the top of the booster, where the air returns to ambient.

If you like science like this and want to support this type of research, go ahead and open the link and download the paper. That helps show that people are interested! Rockets are awesome!

Also thankful to @BYU and @BYU_PhysAstro, along with other sponsors and our friend @LaunchPhoto who let us use his photograph, for enabling this research!

Some community members that we think would be extra interested in this include:
@DJSnM @KSpaceAcademy @NASASpaceflight @Erdayastronaut @SciGuySpace @thejackbeyer @dwisecinema @MarcusHouse @TSHamiltonAstro

[Kent Gee @KentLGee]

@SpaceX This analysis might provide launch viewers useful information about what to expect from the liftoff noise: https://t.co/tK54NTa28G

Have a great test flight!

[Kent Gee @KentLGee]

And it's published.

https://t.co/tK54NTa28G

Thankful to the anonymous peer reviewers who made excellent comments.

Happy to answer questions.

[BYU PASCAL @BYU_PASCAL]

Proud of our team for this cool analysis of the most powerful rocket flown.

In terms of acoustic energy,
1 Starship = 2.2 @NASA_SLS
1 Starship = 11 Falcon 9s

[Kent Gee @KentLGee]

Good morning. As Starship Flight 8 is being prepped, here is an analysis of the launch noise from Flights 5 and 6. In nearby communities, atmospheric winds made a big difference in terms of noise received.

https://t.co/tK54NTa28G

[BYU PASCAL @BYU_PASCAL]

Aaron is a PASCAL alumnus. Nicely done, @a5vaughn!

[POMA @ASA_POMA]

Error in noise measurements can lead to a misestimation of parameters in dose-response models. This work provides a framework to correct for the effects of parameter misestimation due to dose error in dose-response modeling. https://t.co/YPAcRUTtOC

@a5vaughn @NASA_Langley

[Kent Gee @KentLGee]

Got questions about Starship's noise? Check out this @ASA_JASAEL article and ask...

Some have probably been answered in the @NASASpaceflight Flame Trench interview:

https://t.co/nPDLUNBZWo

or the Flight 6 livestream, but ask anyway!

[Kent Gee @KentLGee]

Well... that was a crazy trip. Our Flight 5 paper dropped, met so many people, got interviewed by @NASASpaceflight and multiple other media outlets...all while trying to conduct measurements with our @BYU_PASCAL team. Success...

[Kent Gee @KentLGee]

You may have read our Starship acoustics article by now. If not, please read & share: https://t.co/lCexcm0ocd (Tag me & I'll repost.)

@BYU_PASCAL does a lot more. Gotta focus on teaching & admin today, but reply if you'd like a 🧵on our other rocket acoustics studies.

[Kent Gee @KentLGee]

@BYU_PASCAL has been developing hardware and analysis techniques in support of @NASA's #Quesst.

Here is @AerospaceMark's paper on reducing impact of contaminating noise on sonic boom metrics:

https://t.co/sVVyCeYGF0

[BYU PASCAL @BYU_PASCAL]

@CLURT1847 @BYU @JWhitebread1 "In pursuit of academic gobbledygook" should go on the lab wall! 😊

[BYU PASCAL @BYU_PASCAL]

@kalain777 @BYU We are!

[Kent Gee @KentLGee]

Apparently 60k viewers trying to download our Starship acoustics paper from the link on the @NASASpaceflight livestream yesterday was too much for the platform. Whoops! 😂

Not to worry. You can read it here:

https://t.co/lCexclZQmF

[BYU PASCAL @BYU_PASCAL]

This features our brave, bold, and bald leader, @KentLGee.

[Jack Beyer @thejackbeyer]

This was easily my favorite Flame Trench we’ve ever done, and we’ve done a bunch that I truly love. So much info! So much science! Be sure to give it a watch, you win’t regret it.

[Kent Gee @KentLGee]

Wanna hear about the acoustics of the largest rocket ever built? I'm about to be interviewed live on @NASASpaceflight...

[BYU PASCAL @BYU_PASCAL]

We are proud to have supported this mission by making acoustical measurements. For example, we showed that SLS is a relatively quiet rocket for its thrust. Saturn V produced more sound power. Free to download!

https://t.co/Z3Tu7oqkjO

[NASA @NASA]

Two years ago, we launched the #Artemis I mission to the Moon and back.

Since then, we selected the Artemis II astronauts, who are training for the first crewed launch of @NASA_Orion, landed commercial payloads on the Moon, and continue to progress with our partners.

[📸Trevor Mahlmann🚀 @TrevorMahlmann]

two year anniversary of a loud and bright night on the space coast of Florida.