BYU PASCAL

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

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!

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?

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

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! doi.org/10.1121/10.003… 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

@SpaceX This analysis might provide launch viewers useful information about what to expect from the liftoff noise: doi.org/10.1121/10.003… Have a great test flight!

And it's published. doi.org/10.1121/10.003… Thankful to the anonymous peer reviewers who made excellent comments. Happy to answer questions.

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

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

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: youtube.com/live/Vuxjvb-8V… or the Flight 6 livestream, but ask anyway!

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...

You may have read our Starship acoustics article by now. If not, please read & share: doi.org/10.1121/10.003… (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.

@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: doi.org/10.1121/10.002…

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

@BYU @BYU_PASCAL From all of the academic gobbledygook that I have had to trudge through through the years, there is one common theme: every academic believes their work is groundbreaking and novel research! Good Job, @BYU, for keeping up with them! @JWhitebread1 is this accurate?

BYU is the only university extensively studying rocket noise & its impact on communities and the environment. Today the BYU Physics & Aerospace Student-Centered Acoustics Laboratory is on-scene for the latest Starship launch at 3 p.m. MST @BYU_PASCAL news.byu.edu/intellect/soun…

@kalain777 @BYU We are!

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: doi.org/10.1121/10.003…

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

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

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! doi.org/10.1121/10.002…

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