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Archive for the Launchers category

February 26, 2024

Dream Chaser

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Wikipedia dicit:

Dream Chaser is an American reusable lifting-body spaceplane being developed by Sierra Space. Originally intended as a crewed vehicle, the Dream Chaser Space System is set to be produced after the Dream Chaser Cargo System cargo variant is operational. The crewed variant is planned to carry up to seven people and cargo to and from low Earth orbit.

The cargo Dream Chaser is designed to resupply the International Space Station with both pressurized and unpressurized cargo. It is intended to launch vertically on the Vulcan Centaur rocket and autonomously land horizontally on conventional runways. A proposed version to be operated by ESA would launch on an Arianespace vehicle.

Video credit: Sierra Space

 

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January 30, 2024

Starship Mission

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Wikipedia dicit:

Starship is an American two-stage super heavy lift launch vehicle under development by the aerospace company SpaceX. It is currently the largest and most powerful rocket ever flown. Starship is intended to be fully reusable, which means both stages will be recovered after a mission and reused.

The Starship launch vehicle is designed to supplant SpaceX’s Falcon 9 and Falcon Heavy rockets, expand SpaceX’s Starlink satellite constellation, and launch crews to both low Earth orbit and Mars. The vehicle is fundamental to SpaceX’s ambition of colonizing Mars. SpaceX plans to use Starship vehicles as tankers, refueling other Starships to allow missions to geosynchronous orbit, the Moon, and Mars. A planned lunar lander variant of Starship was contracted by NASA to land astronauts on the Moon as part of the Artemis program by 2025, later delayed to September 2026.

Starship consists of the Super Heavy booster and the Starship spacecraft, which are both powered by Raptor engines, which burn liquid methane and liquid oxygen. Both stages are constructed primarily of stainless steel, instead of the carbon composite used in a series of prior designs. The booster is designed to use its engines to slow itself down, before being caught by a pair of mechanical arms attached to the launch tower. The Starship spacecraft is designed to be protected during atmospheric reentry by its thermal protection system, using a ‘belly flop’ maneuver where the spacecraft turns from a horizontal to a vertical position from which it lands using its engines.

SpaceX has stated that a long-term goal for the Starship system is to achieve frequent space launches at low cost. Development follows an iterative and incremental approach involving test flights of prototype vehicles which are often destructive. The first flight test of the full Starship system took place on 20 April 2023, lifting-off with three engines out and ending four minutes after launch due to a loss of control, resulting in the destruction of the launch vehicle. The second flight test of the vehicle took place on 18 November 2023, achieving stage separation with the Super Heavy booster exploding roughly 30 seconds later following multiple engine failures during its boostback burn. The upper stage was lost nearly eight minutes after launch prior to reaching orbit.

Video credit: SpaceX

 

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Wikipedia dicit:

On November 18, 2023, SpaceX performed the second integrated near-orbital flight of its Starship rocket. The rocket successfully lifted off under the power of all 33 Raptor engines on the Super Heavy booster and made it through stage separation. The booster then had multiple engine failures and exploded after beginning its boostback burn, while the Starship second stage continued to fly for over 8 minutes, reaching an altitude of 148 km (92 mi) before being destroyed by the flight termination system. The Federal Aviation Administration issued a statement confirming that an anomaly had occurred and that there are no reports of public property damage or injuries. SpaceX described the test as a success.

After the first test flight in April 2023 ended in the destruction of the Starship vehicle, significant work was done on the launch mount to repair the damage it sustained during the test and to prevent future issues.

Following Starship’s first flight failure, the Federal Aviation Administration (FAA) required SpaceX to conduct an investigation on the mishap, grounding Starship pending the outcome of their investigation. The FAA closed the investigation on September 8, 2023. The FWS concluded its environmental review on November 14, and the FAA gave its approval for launch shortly after.

Video credit: SpaceX

 

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November 27, 2023

SpaceX CRS-29 Launch

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Wikipedia dicit:

SpaceX CRS-29, also known as SpX-29, is a Commercial Resupply Service mission to the International Space Station (ISS) launched on 10 November 2023. The mission is contracted by NASA and is scheduled to be flown by SpaceX using Cargo Dragon C211. This will the seventh flight for SpaceX under NASA’s CRS Phase 2.

SpaceX plans to reuse the Cargo Dragons up to five times. The Cargo Dragon will launch without SuperDraco abort engines, without seats, cockpit controls and the life support system required to sustain astronauts in space. Dragon 2 improves on Dragon 1 in several ways, including lessened refurbishment time, leading to shorter periods between flights.

The new Cargo Dragon capsules under the NASA CRS Phase 2 contract will land east of Florida in the Atlantic Ocean.

NASA contracted for the CRS-29 mission from SpaceX and therefore determines the primary payload, date of launch, and orbital parameters for the Cargo Dragon.

SpaceX CRS-29 carries over 2,950 kg (6,500 lb) of cargo, where 2,381 kg (5,249 lb) are pressurized cargo with packaging and 569 kg (1,254 lb) are unpressurized cargo.
science investigations: ~1,012 kg (2,231 lb), vehicle hardware: ~491 kg (1,082 lb), crew supplies: ~681 kg (1,501 lb), spacewalk equipment: ~48 kg (106 lb), computer resources: ~46 kg (101 lb)

Video credit: NASA/SpaceX

 

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November 2, 2023

Subscale SLS Booster Motor Testing

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Wikipedia dicit:

The Space Launch System (SLS) is an American super heavy-lift expendable launch vehicle used by NASA. As the primary launch vehicle of the Artemis Moon landing program, SLS is designed to launch the crewed Orion spacecraft on a trans-lunar trajectory. The first SLS launch was the uncrewed Artemis 1, which took place on 16 November 2022.

Development of SLS began in 2011, as a replacement for the retired Space Shuttle as well as the cancelled Ares I and Ares V launch vehicles. As a Shuttle-derived vehicle, the SLS reuses hardware from the Shuttle program, including the solid rocket boosters and RS-25 first stage engines. A Congressionally mandated late 2016 launch was delayed by nearly 6 years.

All Space Launch System flights are launched from Launch Complex 39B at the Kennedy Space Center in Florida. The first three SLS flights use the Block 1 configuration, comprising a core stage, extended Space Shuttle boosters developed for Ares I and the ICPS upper stage. An improved Block 1B configuration, with the Exploration Upper Stage, is planned to debut on the fourth flight; a further improved Block 2 configuration featuring new solid rocket boosters is planned to debut on the ninth flight. After the launch of Artemis 4, NASA plans to transfer production and launch operations of SLS to Deep Space Transport LLC, a joint venture between Boeing and Northrop Grumman.

Video credit: NASA’s Marshall Space Flight Center

 

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June 27, 2023

Foam Insulation on Artemis III

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NASA dicit:

Teams at NASA’s Marshall Space Flight Center in Huntsville, Alabama, have completed applying a spray-on foam insulation to the launch vehicle stage adapter (LVSA) for the Artemis III mission. The LVSA is a cone-shaped piece of hardware that connects the SLS (Space Launch System) rocket’s upper and lower stages and partially encloses the engine of the interim cryogenic propulsion stage. The spray-on foam insulation is a type of thermal protection system that is used to protect the Moon rocket’s hardware from the extreme temperatures, forces, and sounds it’ll experience during launch and ascent. Unlike other parts of the mega rocket, the thermal protection system for the LVSA is applied entirely by hand using a tool similar to a spray gun. It is the largest piece of SLS hardware to be hand sprayed.

Video credit: NASA’s Marshall Space Flight Center

 

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