Launch Vehicles & Propulsion

Space launch vehicles are designed to transport payloads such as satellites, spacecraft, and cargo into low-Earth orbit and beyond. These vehicles rely on propulsion systems that generate immense thrust to overcome Earth's gravitational pull and achieve the necessary velocity for orbital insertion or interplanetary travel. The propulsion systems used in launch vehicles typically employ chemical propellants, which undergo controlled combustion to produce high-temperature, high-pressure gases that are expelled through a nozzle, generating thrust. Common propellant combinations include liquid hydrogen and liquid oxygen (used in the Space Shuttle main engines), or solid propellants (used in some rocket boosters). Advanced propulsion technologies, such as ion engines and nuclear thermal rockets, are also being explored for future space exploration missions.

News & Analysis

Mar 31, 2026
Northrop Grumman plans to test a new nozzle for the Graphite Epoxy Motors (GEM) used on United Launch Alliance’s (ULA) Vulcan and Atlas rockets.
Mar 31, 2026
Virgin Galactic is set to begin ground tests of its first new-build Delta-class spaceship, paving the way for follow-on flight tests at Spaceport America in Q3.
Mar 30, 2026
SpaceX launched the 16th Transporter rideshare mission on March 30, carrying 119 small satellite payloads to orbit for government and commercial customers.
Mar 30, 2026
SpaceX has lost communication with a Starlink satellite on orbit following a March 29 anomaly, the company disclosed on social media March 30.
Mar 27, 2026
With the proliferation of low-Earth-orbit satellite constellations, the commercial air transport industry is accelerating its move to offer free onboard Wi-Fi.
Mar 27, 2026
The agency wants commercial companies to take on a larger role in its Artemis lunar exploration initiative.
Mar 25, 2026
An industry advocacy organization told Congress its members were “concerned and confused” by the latest pivot in NASA’s post-ISS plans.
Mar 25, 2026
Trump administration proposes streamlined OSC payload certification for novel space activities like debris removal and asteroid mining to boost commercial innovation.