RGNext’s Post

The new Ariane 6 launched for the first time today. Delayed, expensive, and expendable, many have criticized Ariane 6 for already being obsolete and not competitive against reusable rockets such as SpaceX's Falcon or Starship. But Ariane 6 does have a specific customer base and a specific purpose for those customers, so for the time being, its market share is mostly safe. Watch to learn more: https://lnkd.in/e4ZXHnvU

Rocket engines are truly fascinating in their temperature dynamics. The internal section of the rocket nozzle reaches incredibly high temperatures, typically ranging from 1600K to 1800K. In Celsius, this translates to about 1327°C to 1527°C. However, simultaneously, the external part of the nozzle is kept cool by circulating hydrogen, which can be as cold as 51K. In Celsius, this corresponds to approximately -222°C. So, the rocket engine operates in a remarkable temperature range, experiencing both extreme heat and extreme cold within its different components.

Falcon 9 is the world's first orbital class reusable rocket. Reusability allows SpaceX to reflight the most expensive parts of the rocket, which in turn drives down the cost of space access. SpaceX launched a Falcon 9 rocket from Cape Canaveral on Sunday. The 4:08 p.m. launch, which was from Space Launch Complex 40, is placing SES O3b mPOWER satellites into medium-Earth orbit. Falcon 9 is a reusable, two-stage rocket designed and manufactured by SpaceX for the reliable and safe transport of people and payloads into Earth orbit and beyond. Falcon 9 is the world’s first orbital class reusable rocket. Reusability allows SpaceX to reflight the most expensive parts of the rocket, which in turn drives down the cost of space access. https://lnkd.in/dgCnxtXa #blessedbulletin #falcon9 #falcon #falconlaunch #Elonmuskfalcon #NASA #ISS #issresuply #sierraspace #tenacity #dreamchaser #artificialintellegence #spacetechnology #spacenews #newtech #technologyblog #elonmusk #spacex

The best footage ever for stage separation and entry born of SpaceX Falcon 9 The first (booster) stage carries the second stage and payload to a pre-determined speed and altitude, after which the second stage accelerates the payload to its target orbit. The booster is capable of landing vertically to facilitate reuse. Both stages are equipped with Merlin 1D rocket engines. Every Merlin engine produces 854 kN (192,000 lbf) of thrust.They use a pyrophoric mixture of triethylaluminum-triethylborane (TEA-TEB) as an engine igniter. The second stage of the Falcon 9 has 1 short or regular nozzle, Merlin 1D Vacuumengine version.

#SecondStageAnomaly #SpaceX #Falcon9 "SpaceX is suspending launches of its Falcon 9 rocket after a problem with the deorbit burn of the upper stage on a crewed launch Sept. 28, the second upper stage anomaly in less than three months for the rocket. SpaceX said in a social media post early Sept. 29 that the upper stage “experienced an off-nominal deorbit burn” during the Crew-9 mission that launched Sept. 28. “As a result, the second stage safely landed in the ocean, but outside of the targeted area.” The company did not provide additional details on the incident but said that it would halt Falcon 9 launches for the time being. “We will resume launching after we better understand root cause.” The burn is designed to target the reentry of the upper stage, disposing of the stage over an unpopulated region of the South Pacific Ocean to both avoid leaving the stage in orbit, where it would pose an orbital debris risk, and to prevent an uncontrolled reentry. The targeted reentry location, based on airspace and marine hazard notices, was east of New Zealand. The incident is the second problem involving the upper stage of the Falcon 9 in less than three months. On a Starlink launch late July 11, the single Merlin engine in the upper stage malfunctioned when reigniting on a second burn to circularlize its orbit. The satellites were deployed, but in low orbits that resulted in the satellites soon reentering. An investigation concluded that the engine suffered a liquid oxygen leak created by a crack in a sense line for a pressure sensor. The leak resulted in “excessive cooling of engine components” including those that deliver ignition fluid to the engine. That caused the engine to suffer a hard start when it reignited, damaging the engine and causing a loss of attitude control. On that July launch, the liquid oxygen leak was seen in video of the first burn of the upper stage as ice built up on engine components. There was no sign of similar ice buildup or other anomalous behavior of the stage during the Crew-9 launch, and neither SpaceX nor NASA mentioned any issues with the rocket during a post-launch press conference. It is unclear how long SpaceX would pause Falcon 9 launches. The July incident halted Falcon 9 launches for 15 days, with the rocket returning to flight early July 27. SpaceX also halted launches for two days in late August after a booster was lost when it tipped over and exploded upon landing on a droneship in the Atlantic Ocean. In both earlier cases, SpaceX needed approval from the Federal Aviation Administration to resume launches either after completing a mishap investigation or receiving a public safety determination from the agency that the incident did not pose any risk to the general public. The FAA did not immediately respond to questions on the incident early Sept. 29. ..."

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SpaceX 2024 launches at a glance Starship not included in success and launch rates. Number of launches: 57 (Falcon 9: 56, Falcon Heavy: 0, Starship 1) Non-Starlink missions: 17 Resued boosters: 54 Launch success rate: 100% Launch rate: 2.66 days (Needed for 148 launches: 2.47 days or lower)

We keep learning new things about a relatively re-iterative new design. The good thing is that we are open to learning what exactly happened and addressing it in updated designs or fixes. The faster the better for an optimized design. There is an upcoming Oct 7th launch that is time sensitive which pushes SpaceX to determine root cause asap.

Mission, vision and strategy. 3 terms that can cause a whirlwind of confusion. Yet, they are the backbone of any successful product business. 1. Mission is the reason you get out of bed to do the work. → For SpaceX, it's the idea of making the human race multi-planetary. 2. Vision is your nearer term future. It's the change your customers will experience in the future. → For SpaceX, it was once "make the world's first reusable rocket." 3. Strategy is your step-by-step guide to achieving that vision. → For SpaceX, it probably started with "perform a Falcon 1 live fire engine test," then "launch a Falcon 1," and later "demonstrate a vertical landing with Falcon 9." When your strategy aligns with your vision, and you start ticking off those milestones, You begin to embody your mission.

LANDING LEGS OF FALCON 9 Falcon 9 landing legs are crucial for SpaceX's reusable rocket technology. Their lightweight yet sturdy design enables controlled vertical landings, enhancing mission success and reducing launch costs. These retractable legs, typically made of carbon fiber or aluminum alloys, deploy just before touchdown. Activated by hydraulic or pneumatic systems, they adapt to various landing conditions, providing stability and support. Successful landings allow SpaceX to refurbish and reuse rockets, revolutionizing space exploration by making it more cost-effective and sustainable. Thus, Falcon 9 landing legs play a pivotal role in advancing the capabilities of space transportation