The Dream Chaser spaceplane is the first-ever winged commercial spaceplane that could open shared access to space and international collaboration. The first model of the DC-100 uncrewed cargo spacecraft is named Tenacity which will be the first vehicle in Sierra Space's Dream Chaser fleet of spaceplanes.

During its first flight, Sierra Space will conduct in-orbit demonstrations to certify Dream Chaser for future missions. Teams at NASA’s Kennedy Space Center in Florida, NASA’s Johnson Space Center in Houston, and the Dream Chaser Mission Control Center in Louisville, Colorado, will monitor the flight.

As Dream Chaser approaches the orbiting laboratory, it will hold a final time approximately 38 feet (11.5 meters) from the space station, when a station crew member will use Canadarm2 robotic arm to grapple a fixture on the spacecraft’s cargo module before teams on the ground install the cargo module to an Earth-facing port on the Unity or Harmony module.

On its first flight to the International Space Station, Dream Chaser is scheduled to deliver over 7,800 pounds of cargo. On future missions, Dream Chaser is being designed to stay attached to the station for up to 75 days and deliver as much as 11,500 pounds of cargo. Cargo can be loaded onto the spacecraft as late as 24 hours before launch.

Dream Chaser will remain at the space station for about 45 days before it is uninstalled using Canadarm2. The spacecraft can land as quickly as 11 to 15 hours after departure, and there are daily opportunities if weather criteria are met.

Dream Chaser can return over 3,500 pounds of cargo and experiment samples to Earth, while over 8,700 pounds of trash can be disposed of during reentry using its cargo module.

Sierra Space was awarded a NASA Commercial Resupply Services 2 (CRS-2) contract in 2016. Under this contract, the Dream Chaser spaceplane fleet (including Tenacity), will provide a minimum of seven uncrewed cargo service missions to and from the International Space Station, carrying critical supplies like food, water, and science experiments.

Tenacity represents an uncrewed spiritual successor to the space shuttle, and at 30 feet (9 meters) long, it’s roughly a quarter of the total length of the space shuttle orbiters.

In 2017, Sierra Space conducted a pivotal test flight where the team tested the Dream Chaser hardware during an autonomously conducted atmospheric test flight. On descent over the California desert, the Dream Chaser test vehicle autonomously deployed its landing gear, touching down on the runway at NASA’s Armstrong Flight Research Center in Edwards, California, demonstrating the spaceplane’s unique lifting body design.

For the return flight, Dream Chaser can safely return critical cargo including supplies and science experiments to Earth at less than 1.5g’s on compatible commercial runways, making cargo accessible faster.

Sierra Space’s Shooting Star™ cargo module is a flexible 15-foot transport and cargo vehicle to be used as an attachment to the Dream Chaser spaceplane.

Dream Chaser, with the help of Shooting Star, can deliver up to 12,000 pounds of pressurized and unpressurized cargo to low-Earth orbit.

Credit: Sierra Space and NASA

United Launch Alliance's brand new launch vehicle, Vulcan Centaur is a two-stage-to-orbit, heavy-lift launch vehicle. It will replace both of ULA's existing launchers (Atlas V and Delta IV Heavy) which are retiring.

Stats

Height: 61.6 m (202 ft)

Diameter: 5.4 m (18 ft)

Mass: 546,700 kg (1,205,300 lb)

Stages: 2 and 0, 2, 4 or 6 boosters

Capacity

Payload to low Earth orbit (28.7°): Mass: 27,200 kg (60,000 lb)

Payload to geostationary transfer orbit (27.0°): Mass 14,400 kg (31,700 lb)

Payload to geostationary orbit: Mass 7,200 kg (15,900 lb)

Payload to trans-lunar injection: Mass 12,100 kg (26,700 lb)

On Monday, January 8th, 2024, United Launch Alliance successfully launched the maiden flight of its new Vulcan rocket from Cape Canaveral Space Force Station in Florida. The new launcher is powered by Blue Origin's BE-4 engines and marks the first time the Bezos-owned company's hardware has flown an orbital mission.

United Launch Alliance has a proven and uninterrupted record of launching many of NASA's flagship science missions like the Perseverance Mars rover, the Parker Solar Probe, and sample return mission OSIRIS-REx. Just to name a few.

ULA Chief Tory Bruno remarked on the seemingly perfect maiden launch by noting that the only problem that arose was a broken coffee machine in launch control. It was fixed by a nearby rocket scientist before liftoff.

Praise came from across the industry, and included was a congratulatory reply on X from Bruno's nemesis SpaceX CEO Elon Musk. Many expect Vulcan to provide some competition in the Falcon-dominated launch market.

Configurations

Vulcan is available in four standard offering configurations including zero, two, four, and six solid rocket booster (SRB) variants.

Payload Fairings

The spacecraft is encapsulated in a 5.4-m- (17.7-ft-) diameter payload fairing (PLF), a sandwich composite structure made with a vented aluminum-honeycomb core and graphite-epoxy face sheets. The bisector (two-piece shell) PLF encapsulates the spacecraft. The payload attach fitting (PAF) is a similar sandwich composite structure creating the mating interface from the spacecraft to the second stage and payload fairing. The PLF separates using a debris-free horizontal and vertical separation system with spring packs and frangible joint assembly. The payload fairing comes in the 15.5-m (51-ft) standard and 21.3-m (70-ft) long configurations.

Multi-Manifest
With multi-manifest, two or more spacecraft are integrated into a launch vehicle — optimizing mass to orbit and enabling missions. Depending on the size of the spacecraft, multi-manifesting on a Vulcan rocket can be done in several ways. The Aft Bulkhead Carrier (ABC) interfaces at the aft end of the Centaur upper stage and can carry up to 24U CubeSats weighing 80 kg each. The Secondary Payload Adapter (ESPA Ring) is located between the upper stage and the primary payload and can accommodate 4-6 payload modules weighing up to 318 kg each. Finally, for small satellites exceeding the mass of an ESPA capability, the Multi-Payload Canister System is a load-bearing separating canister that can be utilized to enclose an aft small satellite while supporting a forward traditional large satellite.

Main Engine

Booster propulsion is provided by a pair of BE-4 engines, manufactured by Blue Origin.

Solid Rocket Boosters

Vulcan integrates up to six Northrop Grumman Graphite Epoxy Motor (GEM) 63XL Solid Rocket Boosters (SRBs). They are constructed out of a graphite-epoxy composite with the throttle profile designed into the propellant grain.

Upper Stage

Vulcan will rely on two RL10C engines to power its second stage. Logging a record of nearly 400 successful flights and nearly 700 firings in space, RL10 engines, manufactured by Aerojet Rocketdyne, harness the power of high-energy liquid hydrogen. The RL10 boasts a precision control system and restart capability to accurately place payloads into orbit.

Credit: ULA

Photo: Erik Kuna for Supercluster

Space Launch Complex-41 is the east-coast home of United Launch Alliance’s Atlas V rocket.

The pad hosted its first launch on December 21st, 1965 and is currently being upgraded to serve ULA's Vulcan rocket no earlier than 2022.

Vulcan and Atlas V will share the pad for several years before the Atlas is retired.

From the 1960s to the 1990s, SLC-41 was used for the U.S. Air Force’s Titan III and Titan IV rockets.

It has been the launch site of many notable missions:

• the Helios probes to study the Sun
• the Viking missions to Mars
• the Voyager interstellar probes
• the Mars Reconnaissance Orbiter
• New Horizon to Pluto and Kuiper Belt
• Juno to Jupiter.

The pad will soon start launching humans on Boeing's Starliner capsule beginning no earlier than 2024.

Located on Florida’s east coast, Cape Canaveral is ideally located to allow access to a wide variety of space destinations that can be reached while safely launching over the open Atlantic Ocean so as not to endanger anyone on the ground.

The Cape currently supports the launch of four different rocket families: Atlas V, Delta IV, Falcon 9, and Minotaur.

Launches of Vulcan from ULA and New Glenn from Blue Origin are set to begin no earlier than 2024 with current schedules.

NASA's Kennedy Space Center, which occupies neighboring Merritt Island, and Cape Canaveral are often confused with each other or referred to as a single place.

They are in fact separate government installations but united as a single “Eastern Range” for launch operations.

Over its history, the spaceport has held the following names:

• Cape Canaveral Air Force Station (1949-1963)
• Cape Kennedy Air Force Station (1963-1973)
• Cape Canaveral Air Force Station (1973-2020)
• Cape Canaveral Space Force Station (2020-present)

Credit: ULA

As Dream Chaser approaches the orbiting laboratory, it will hold a final time approximately 38 feet (11.5 meters) from the space station, when a station crew member will use Canadarm2 robotic arm to grapple a fixture on the spacecraft’s cargo module before teams on the ground install the cargo module to an Earth-facing port on the Unity or Harmony module.

On its first flight to the International Space Station, Dream Chaser is scheduled to deliver over 7,800 pounds of cargo. On future missions, Dream Chaser is being designed to stay attached to the station for up to 75 days and deliver as much as 11,500 pounds of cargo. Cargo can be loaded onto the spacecraft as late as 24 hours prior to launch. Dream Chaser can return over 3,500 pounds of cargo and experiment samples to Earth, while over 8,700 pounds of trash can be disposed of during reentry using its cargo module.

Courtesy of NASA.