SpaceX Starship Overview 2021

Starship updates – the grand vessel that will take humans to Mars.

2 comments

Starship Rocket Overview

Important Breakthroughs

  • Propellant production in Boca Chica will be important to optimize the supply chain.
  • Rapidly reusable rockets – like air travel or car travel, you don’t get a new car every time you take a trip.
    • Re-usability will allow flying the booster 20 times per day, and the ship 3-4 times per day. Reason ships can only be used a few times a day: since ship goes to orbit, the track of a satellite is sinusoidal (unless it is equatorial or san-synchronous). you have to wait for the ground path to sync up with the launch site. It takes like 6 hours to sync up.
  • Satellite Delivery: Currently, the company uses Falcon to deliver satellites for Starlink. Starship will be able to deliver satellites further and at a lower marginal cost per launch, as Startship has a much greater payload..
  • SpaceX created the Raptor engine, which has a very high specific impulse. Because Earth’s gravity is quite high, we are just on the cusp of reusable rockets being physically possible. Raptor engine (it will have 6 engines) uses mostly oxygen per unit of fuel (3.5 tons of oxygen for every 1 ton of fuel).
  • Making it to orbit was tough… landing the rocket was tougher, and SpaceX was the first to do so.

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Reducing Launch Mass

  • Steel: the rocket it made of steel. It has the perfect combination of strength and heat resistance. Because of this, the rocket will be able to have a smaller heat shield, and only need a heat shield on 1 side of the ship. This will reduce launch mass.
  • Orbital re-fueling: Starship attaches to another rocket containing fuel while in orbit, making it pace.

Starship Demographics

Image
Raptor Engine. Source: @brandondeyoung_ twitter

SpaceX has published a quite succinct user guide with detailed information.

  • Engine: Raptor
  • Fuel: Methane and Liquid Oxygen (CH4 and LOX)
  • Length: 72 meters
  • Diameter: 9 meters
  • Material: Stainless Steel
  • Payload: 100 tons
  • Nomenclature: SN9 stands for “Serial Number 9”

Starship flights:

Starship performed its first test flight on July 26, 2019 and has so far performed 6 orbital test flights.

Starship SN8 flight recap

Sources:

2 comments on “SpaceX Starship Overview 2021”

  1. These are exciting times for mankind as we take dreams into reality. Drive on to new heights SpaceX, Drive on Forward to the Stars!

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