Twitter account for the @BYU Physics and Aerospace Student-Centered Acoustics Laboratory, advised by @KentLGee and housed in @BYUPhysAstro.
Provo, Utah
Joined March 2022
- Tweets492
- Following113
- Followers121
- Likes986
BYU PASCAL retweeted
Will be taking @BYU_PASCAL students to measure the noise. Most powerful single rocket ever built.
BYU PASCAL retweeted
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!
BYU PASCAL retweeted
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?
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!
BYU PASCAL retweeted
Great to spend some time with Jack today. Looking forward to continuing to do work together in the future!
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!
BYU PASCAL retweeted
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/10.1121/10.0035649
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
BYU PASCAL retweeted
This analysis might provide launch viewers useful information about what to expect from the liftoff noise: doi.org/10.1121/10.0035925
Have a great test flight!
BYU PASCAL retweeted
And it's published.
doi.org/10.1121/10.0035925
Thankful to the anonymous peer reviewers who made excellent comments.
Happy to answer questions.
I learned that tomorrow, our comparison between Starship's Flights 5 & 6 launch noise will publish in @ASA_JASAEL. Hopefully it'll be an interesting read and be a useful addition to the conversation about noise.
(And, no, I wasn't at Flight 7 and won't be at Flight 8! 😢)
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
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.
doi.org/10.1121/10.0035925
Aaron is a PASCAL alumnus. Nicely done, @a5vaughn!
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. doi.org/10.1121/2.0001938
@a5vaughn @NASA_Langley
BYU PASCAL retweeted
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-8VTc…
or the Flight 6 livestream, but ask anyway!
Check out the November JASA Express Letters cover! It features photos from the launch of Flight 5 of the Starship Super Heavy. Don't miss the article, which discusses the first ever measurements of launch acoustics from this massive rocket! doi.org/10.1121/10.0034453
@kentlgee
BYU PASCAL retweeted
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...
BYU PASCAL retweeted
You may have read our Starship acoustics article by now. If not, please read & share: doi.org/10.1121/10.0034453 (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 retweeted
@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/10.1121/10.0026436
NASA's Shaped Sonic Boom Demonstrator aircraft, proved that reshaping aircraft could minimize sonic booms. Today NASA's #Quesst mission aims to make quiet supersonic air travel a reality w/the X-59✨
#NationalAviationHistoryMonth More @NASAhistory at go.nasa.gov/3AVBko2
ALT A white modified Northrop F-5E jet in flight, used for NASA's SSBD program. The blue sky is in the background, with the vast valley shown below.
BYU PASCAL retweeted
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/10.1121/10.0034453
This features our brave, bold, and bald leader, @KentLGee.
BYU PASCAL retweeted
Wanna hear about the acoustics of the largest rocket ever built? I'm about to be interviewed live on @NASASpaceflight...
Join @NASASpaceflight in about 15 minutes to discuss Starship Super Heavy Acoustics! 🔊
New research by @KentLGee and his team from @BYU_PhysAstro released today. We'll cover the data gathered during Starship Flight 5 and their plans to learn more on 6
➡️youtube.com/live/Vuxjvb-8VTc
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/10.1121/10.0022538
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.
ALT NASA’s Space Launch System carrying the Orion spacecraft lifted off the pad at Launch Complex 39B at the agency’s Kennedy Space Center in Florida on Nov. 16, 2022. The perspective of the image is from below the rocket looking upward. Credit: NASA/Chris Coleman and Kevin Dav
ALT On Feb. 22, 2024, Intuitive Machines’ Odysseus lunar lander captured a wide field of view image of Schomberger crater on the Moon approximately 125 miles (200 km) up range from the intended landing site, at approximately 6 miles (10 km) altitude. The image is captured with a fisheye lens. Credit: Intuitive Machines
ALT The flight design of Axiom Space's Axiom Extravehicular Mobility Unit (AxEMU) lunar spacesuit that NASA astronauts will wear during the Artemis III mission. The majority of the spacesuit is white with gray patches over the knees and elbows and red trimming on the sleeves and torso. Credit: Axiom Space
ALT The first-stage booster of SpaceX's Starship is seen here being caught by the "chopstick" arms of the launch tower seven minutes after liftoff. A sunrise can be seen in the background. SpaceX launched an integrated Starship and Super Heavy rocket, or booster, for the fifth time on Oct. 13, 2024, from its Starbase site in Texas. Credit: SpaceX
BYU PASCAL retweeted
@BYU - we're out here, getting ready for the Starship launch.
The BYU team is setting up their acoustic equipment at one of the NSF sites at Starbase.
youtube.com/watch?v=SQ6lRCru…
BYU PASCAL retweeted
Proud to have made noise measurements at all of them in our efforts to develop better models for rocket acoustics.
SpaceX teams targeting four launches from all four launch pads in Texas, Florida, and California → spacex.com/launches