Issue #4(18) 2018 Science

The Space Elevator – an alternative path to space?

Glen Clovis
Glen Clovis
Martin Lades ISEC, California, USA

Is it just an engineering meme or a monumental bridge to our off-planet future? What are the key issues for constructing and deploying one and then keeping it aloft and what constraints and challenges will be faced? In this article Martin Lades considers the concept, the existing competition and the outlook for Space Elevator research. The first elevator may be as expensive as the Space Shuttle but its successful construction would represent a paradigm shift and a commitment to space. So how close are we to the dream of simple access to space for all, at the push of a button, through an infrastructure similar to the 19th century transcontinental railroads in the United States?

Konstantin Tsiolkovsky’s statement, from a letter in 1911 [1], still holds: “a planet is the cradle of humanity, but one cannot live in the cradle forever”. Mother Earth, however, makes leaving hard!

A combination of high total mass and density results in high surface gravity. We have tried to overcome this with chemical rockets, governed by Tsiolkovsky’s rocket equation [2] which relates the delta-v, the maximum velocity difference of the rocket if no other external forces act, reached by a manoeuvre to the ratio of the initial and final mass of the rocket and the (effective) exhaust velocity out of the nozzle. A high delta-v is required to reach low Earth orbit (LEO) to remain in space.

To continue reading this premium article, subscribe now for unlimited access to all online content

If you already have a login and password to access www.room.eu.com - Please log in to be able to read all the articles of the site.

Popular articles

See also

Astronautics

Asgardia’s calendar and its role in space industrialisation strategy

Astronautics

Advancing maritime intelligence with real-time satellite AIS

Astronautics

UAE’s ambitious plans for space sector growth

Popular articles

A graphic simulation of the Starlink constellation, visualising the ground tracks of around 11,500 satellites between 2019 and 2033 (with guesses for the timing of the deployment of the remaining orbital shells, which determines the order in the plot). Opinion

Congested, contested... under-regulated and unplanned

Astroscale launched its ELSA-d mission in March 2021. ELSA-d consists of two satellites stacked together - a servicer designed to safely remove debris from orbit and a client satellite that serves as a piece of replica debris. Astronautics

Developing an in-orbit servicing and manufacturing economy