What makes Spin Launch a promising alternative to traditional rocket launches?

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SUMMARY

Spin Launch proposes a novel method for launching small payloads into orbit using a slingshot mechanism, with a successful one-third scale test video demonstrating its potential. The system utilizes a large reusable static rotor powered by electric motors to propel small second-stage rockets, aiming to reduce costs compared to traditional first-stage vehicles. However, prominent space engineer Scott Manley raises concerns about the feasibility of achieving the necessary kinetic energy for Low Earth Orbit (LEO) and the significant centripetal acceleration of approximately 10,000 g, which may limit its practical application. The discussion highlights the challenges of payload weight, heat shield requirements, and the economic viability of Spin Launch compared to existing launch systems like SpaceX's Falcon 9 and Northrop Grumman's Pegasus.

PREREQUISITES
  • Understanding of orbital mechanics and Low Earth Orbit (LEO) dynamics
  • Familiarity with centripetal acceleration and its implications in launch systems
  • Knowledge of rocket propulsion systems and payload considerations
  • Awareness of current satellite launch market dynamics and pricing
NEXT STEPS
  • Research the engineering principles behind Spin Launch's slingshot mechanism
  • Explore the economic models of satellite launch services, focusing on cost per kilogram to LEO
  • Investigate the thermal dynamics of ablative heat shields in high-speed launches
  • Learn about alternative launch methods, including air-launch systems and railgun technology
USEFUL FOR

Aerospace engineers, space technology enthusiasts, and professionals involved in satellite launch services will benefit from this discussion, particularly those interested in innovative launch methods and market analysis.

  • #31
mfb said:
The acceleration in tangential direction - increasing the speed of the payload - can be done slowly, over something like an hour with an acceleration well below 1g, lowering the peak power.
So what? The centripetal acceleration will make you just as flat. The power will be less as you say.
If you want to talk about the rate of change of the acceleration (known as the "jerk" where I come from) then you you may have a point but I am not convinced it is very salient.
 
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  • #32
This interview / discussion / 'factory tour' was very interesting. I recommend it to anyone with interest in the spin launch physics, engineering and associated launch economics.

 

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