Connect with us

News

SpaceX gets official ‘go’ from NASA for upcoming astronaut launch debut

A SpaceX Falcon 9 rocket with the company's Crew Dragon spacecraft onboard is seen as it is rolled out of the horizontal integration facility at Launch Complex 39A as preparations continue for the Demo-2 mission.Photo Credit: (NASA/Bill Ingalls)

Published

on

Days before the final test flight and first crewed flight of SpaceX’s Crew Dragon capsule, Demo-2, representatives from SpaceX, NASA, and the International Space Station met for an intensive Flight Readiness Review (FRR) to determine whether or not the historic mission could proceed toward a May 27th, 2020 launch attempt.

On May 21, 2020, inside the Operations Support Building II at NASA’s Kennedy Space Center in Florida, NASA and SpaceX managers participate in a flight readiness review for the upcoming Demo-2 launch. (Photo credit: NASA/Kim Shiflett)

Leaders from SpaceX and NASA such a NASA’s Commerical Crew Program Manager, Kathy Lueders; International Space Station Program manager Kirk Shireman; SpaceX’s director of Crew Mission Management, Benji Reed in conjunction with Russian and Japanese representatives from the International Space Station partnership came together to discuss the findings of previous, specialized reviews, close out any remaining action items, and give the official nod of approval for SpaceX to send astronauts to orbit for the first time. NASA Associate Administrator, Steve Jurczyk, led the review in place of Doug Loverro who recently resigned as chief of NASA’s human spaceflight program.

On May 22, 2020, inside the Operations Support Building II at NASA’s Kennedy Space Center in Florida, NASA managers pose for a photo following the conclusion of the flight readiness review for the upcoming Demo-2 launch. Sitting at the table is NASA Associate Administrator Steve Jurczyk. Kathy Lueders, Commercial Crew Program manager, is to the far right, with NASA Administrator Jim Bridenstine standing next to her. (NASA)

The standard practice joint FRR that occurs ahead of any crew launch comes after a series of previously held independent specialized reviews – such an engineering review of the Crew Dragon capsule and a flight test rate review led by Kathy Lueders and the Commercial Crew Program team. Initially intended to last just one day, the FRR began on Thursday (May 21st), extended to the end of the business day, and continued into Friday (May 22nd). After a day and a half of intensive review and conversation, Steve Jurczyk stated that “We did a thorough review of all of the systems and all the risks, and it was unanimous on the board that we are go for launch.”

NASA administrator, Jim Bridenstine spoke at a post review news conference stating that the FRR was a “time to speak up if there are any challenges and there were. There were conversations that were had that were very important to be had.” He also stated that there are still “a lot of checks to do, but the (flight) readiness review was good and we are a go.”

A SpaceX Falcon 9 rocket with the company’s Crew Dragon spacecraft onboard is seen as it is raised into a vertical position on the launch pad at Launch Complex 39A as preparations continue for the Demo-2 mission, Thursday, May 27, 2020, at NASA’s Kennedy Space Center in Florida. Photo Credit: (NASA/Bill Ingalls)

For Demo-2, the successful FRR is a crucial pathfinding step to confirming launch, however not the last. During the follow-up news conference, SpaceX’s Director of Crew Mission Management, Benji Reed, stated that the go for launch is permission to proceed in the launch sequence, but “really it’s a go to the mission,” referring to the fact that Demo-2 is an extended exercise of SpaceX’s entire human spaceflight system. Demo-2 will every step of the sequences from launch, to docking, to returning NASA astronauts Bob Behnken and Doug Hurley home safely. Reed went on to say that “there’ll be constant vigilance and watching of the data and observations as we go through the mission.”

NASA astronauts Bob Behnken and Doug Hurley will fly to the space station aboard a Crew Dragon spacecraft on May 27. Credit: NASA

In order to pass this final test flight, SpaceX will have to prove beyond a shadow of a doubt that Falcon 9 and Crew Dragon are more than capable of delivering and returning astronauts safely to and from orbit. Perhaps the most important objective to be met is achieving NASA human rating certification of SpaceX’s human spaceflight system. In response to a question regarding human rating by CNBC reporter Michael Sheetz, Steve Jurczyk stated that the Demo-2 FRR was an “intermittent interim human rating certification review – validated that this system meets the human rating certification requirements for the Demo-2 mission and those requirements feed forward to future missions, including the Crew-1 mission. We will have a final human rating certification review after Demo-2, before the Crew-1 mission, just to certify the relatively small set of design changes between the Demo-2 system and the Crew-1 system, and at that point, we will deem the system human rating certified.”

A few final hurdles Demo-2 had left to clear is the static firing of the Falcon 9’s Merlin 1D engines and a dry dress rehearsal of launch day proceedings scheduled to occur Saturday (May 22nd) to ensure every kink is worked out of the system and everything is ready to go for launch. The dry dress rehearsal will encompass every aspect of launch day, from putting on the spacesuits to climbing into the Crew Dragon capsule. It is expected to end just before propellant loading would begin in the countdown.

Finally, SpaceX is expected to hold its own Launch Readiness Review with appropriate NASA teams in attendance on Monday, May 25th, “to make sure we’re go for each aspect, including go to come home,” as stated by Reed. Upon conclusion, the only thing left to do will be to load the astronauts and launch to the International Space Station, making history for SpaceX once again.

Space Reporter.

Advertisement
Comments

Elon Musk

Why Tesla Roadster unveiling delay might have nothing to do with it flying

Published

on

tesla roadster elon musk flying
Credit: Grok

Tesla announced on Monday that the Roadster event scheduled for today would be postponed due to the need for it to be held outside.

Less than 24 hours later, CEO Elon Musk broadened that by stating it was due to high winds, immediately sending everyone into a frenzy over the Roadster’s potential ability to fly.

And realistically, it could definitely have to do with it flying, hovering, or hopping; whatever Tesla has in mind for this demonstration could not be impacted by wind. However, it might have nothing to do with the vehicle flying whatsoever, and instead could be a simple precaution, as the Roadster is a very unique vehicle with some already official specs that are just mind-blowing.

Tesla will very, very likely be showcasing both the acceleration rate and potentially even a top speed demo at the event in Waco. Both of these demonstrations, performed with a vehicle that has such incredibly fast metrics, could easily be impacted by wind as well.

Tesla Roadster event requires restricted airspace, and the FAA obliges

Top Speed Demo

At high speeds, aerodynamic forces are already overwhelmingly present. A crosswind or sudden gust adds a layer of sideways force that the tires must counter with slip angle. On a short demo course, that force can shove the car off the intended line, especially in a light car with a low frontal area and little mass to resist the push.

Advertisement
-

Electric cars, due to their battery packs, have an advantage of an extremely low center of gravity, giving them extra stability. However, the speeds at which the Roadster could travel at the demo could spell some issues if crosswinds are present.

Gusts are worse than a steady wind because the load changes faster than a driver can smoothly correct. That shows up as weaving or a late correction. Headwinds and tailwinds can also spell disaster. Headwinds cut a measured top speed but raise the power needed to get there or maintain it. Meanwhile, a tailwind can inflate the top speed, and downforce issues could become more noticeable.

Wind also loads the body unevenly. A low car can feel light on the upwind side or see a sudden change in downforce if the gust hits a wing or diffuser at an angle. Tire temperature and pressure might stay near a normal level, but lateral grip can be lost as the vehicle is spent fighting the wind.

Acceleration Demo

Launch and 0-60 MPH runs are shorter, so the car spends less time exposed to forces that could cause things to go awry. However, the first second is very sensitive, as a crosswind at launch could yaw the car before speed builds and prior to aerodynamic impact being too great. The driver will be required to correct traction control or manage how much the wheels are spinning, which will likely be corrected automatically by some sort of traction control system within the Roadster (we are fairly certain Tesla will implement something brilliant with it).

These things could cause an unstable run.

A headwind would increase drag as speed rises, while a tailwind would do the opposite. Meanwhile, surface effects, like wind-driven dust, light debris, or even rain, could reduce grip at the exact moment the tires are asked for peak longitudinal force. Standing water plus a crosswind is a common reason an acceleration attempt might be scrapped.

Advertisement
-

Flying or Not

No matter what Tesla has in store for the Roadster, waiting for ideal conditions is a great idea. People who follow and support the company, along with the engineers involved in the Roadster program, have been waiting nine years since the last unveiling for this moment. Everything should be ideal.

Some speculate that it’s just not ready, and that’s ridiculous. Why would Tesla even schedule the event — albeit prematurely — after nine years if it was not ready? Why would they jump the gun now?

We were all excited for today, but it truly is the most ideal thing in the world to wait two more weeks so everything, including the weather, can be perfect. The delay is simply worth it. But Tesla, seriously, make this the last one.

Continue Reading

Elon Musk

SpaceX nails “Lucky 13” astronaut launch, leaning into Tesla tradition and superstition

SpaceX launched Crew-13 astronauts to the ISS Thursday, setting up a record fast Dragon docking.

Published

on

By

Crew Dragon sits atop Falcon 9 at sunrise on Cape Canaveral's pad 40, less than a day before four astronauts are set to launch to the ISS. (Credit: SpaceX)

SpaceX launched NASA’s Crew-13 mission to the International Space Station on Thursday morning, getting four astronauts to orbit despite a forecast of thunderstorms and gusty winds that had threatened to push the flight to Friday.

Falcon 9 lifted off from Space Launch Complex 40 at Cape Canaveral Space Force Station at 11:10 a.m. ET carrying Dragon Grace, NASA confirmed. On board are NASA commander Jessica Watkins, NASA pilot Luke Delaney, Canadian Space Agency astronaut Joshua Kutryk and Roscosmos cosmonaut Sergey Teteryatnikov. The first stage booster, B1101, landed at Landing Zone 40 beside the pad on its third flight after previously supporting Crew-12 and a Starlink mission.

It was the first spaceflight for Delaney, Kutryk and Teteryatnikov. Watkins, who flew on Crew-4 in 2022, became the first NASA astronaut to launch aboard a Crew Dragon twice.

Before launch, the crew rode to the pad in Teslas, a tradition on NASA’s SpaceX crew flights since 2020. This time the cars carried specialty plates reading “Lucky 13.” Watkins said the mission patch leans into the number on purpose, as a nod to Apollo 13 and the resilience of that crew.

Advertisement
-

Grace is now on a short trip to the station. Docking at the forward port of the Harmony module is scheduled for about 7 p.m. ET, roughly 7 hours and 50 minutes after liftoff, which Space.com notes would be the fastest Crew Dragon transit to the ISS yet. Most Dragon flights take around 15 to 24 hours to catch the station. Hatch opening is planned for 8:25 p.m. ET.

The launch came more than two weeks later than originally planned. An oxidizer leak was found in Grace’s propulsion system in August, and NASA and SpaceX added time for tests. That pushed back the return of Crew-12, which has been aboard the station since February and is now set to splash down off Southern California next week. Crew-13 is expected to stay about six months.

SpaceX rescue mission for stranded ISS astronauts nears end — Here’s when they’ll return home

SpaceX already holds NASA orders for crew rotations through Crew-17, while Boeing is preparing an uncrewed Starliner flight to the station as early as December.

Crew-13 was only the first of three SpaceX launches planned for Thursday, as Teslarati previewed on Wednesday. A Falcon 9 launched its Transporter-18 mission from California today, where Google will be launching its first orbital artificial intelligence (AI) test satellite. Meanwhile, Falcon Heavy is set to launch the classified NROL-97 mission for the National Reconnaissance Office from Launch Complex 39A at 11:53 p.m. ET. Its two side boosters will return to Landing Zones 1 and 2, which means Central Florida could hear up to three sonic booms in a single day. The busy stretch follows Starship’s Flight 14 on Monday, which reached orbit for the first time.

Advertisement
-
Continue Reading

News

Tesla moves forward on Wireless Charging for vehicles

Published

on

Credit: Tesla | X

Tesla has moved its Wireless Charging efforts for its electric vehicles forward, as it had a new patent published today, one that it submitted back in March.

The patent describes a system for detecting foreign objects on the wireless charging pad under varying temperatures, aiming to mitigate any undesired results that could come from something being on top of the charging pad.

The abstract of the patent states:

Advertisement
-

“The present disclosure relates to methods and systems that can reliably detect foreign objects on a wireless charging pad under varying temperatures. In some examples, an object detector can utilize a set of inductive coils included in resonant tanks, and excite the resonant tanks using signals in a range of frequencies including or near a nominal resonant frequency of the resonant tanks. The object detector can detect a metal object based on resistance of a coil increasing and inductance of the coil decreasing. By analyzing the shifts and/or distributions in resonant frequencies and output magnitudes (e.g., output voltage peaks), the object detector can distinguish between changes of frequencies and magnitudes caused by temperature and those caused by foreign objects to accurately detect the foreign objects.”

The object detection system will utilize a set of inductive coils included in resonant tanks, and “excite the resonant tank using signals in a range of frequencies including or near a nominal resonant frequency of the tanks.” Metal can be detected by an increase in the coil’s resistance and a decrease in the coil’s inductance.

By analyzing shifts or disruptions in resonant frequencies and output magnitudes, the system can detect foreign objects. These types of safeguards need to be implemented through the normal operation of the charging pads.

Tesla says its Cybercab wireless charging efficiency is ‘well above 90%’

Tesla plans to utilize wireless charging with Cybercab and Robotaxi-enabled units to help streamline the fully autonomous experience from A to Z. The last thing the company wants to do is have any sort of small obstruction preventing the rider from experiencing Robotaxi as intended.

Advertisement
-
Continue Reading