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New ToughSF post on Nuclear Photon Rockets.
In theory, the highest exhaust velocity allows for the fastest starships. Why is it not so simple?
https://t.co/Ulp9ck0RiL
Starting from an altitude of over 40km, V-shaped airships can rely on both aerodynamic and buoyant lift while slowly accelerating on electric thrusters to reach orbit. This safer and more efficient launch method is what @JohnMPowell1 is developing.
https://t.co/Vrcgjb42D6
Very well done infographic by Tony Bela, detailing the SpaceX Starship's upcoming test flight up to 15km altitude.
By @InfographicTony for https://t.co/SSRrvQfBe0
The Advanced Concepts Office at NASA did consider a new oxygen-rich 5.56MN thrust 'New Hydrocarbon Engine' to power a heavy launcher to take 100+ tons to orbit, after the Constellation program was cancelled. Instead we got the SLS with old RS-25s.
https://t.co/kdmejISavS
This is insane. Read about how the Sperm Whale's 20-ton nose produces 230dB clicks, the most powerful sound produced by a living being: https://t.co/Dvv79YLDtR
A click is produced near the blowhole, travels backwards in an amplification chamber, and is then focused by oily lens.
It's wonderful how form follows function in the semicircular canals of the inner ear.
The way they repurpose small hairs to become accelerometers is even more fascinating, a biological 'hack' that is nearly half a billion years old.
https://t.co/ebnGuLFUJD
https://t.co/Ir2dRkr9w5
Benjamin Donnelly shows us just how much work can go into a minor background prop.
A huge amount of research, modelling and manufacturing went into the uncovered engine of an early Soviet Type-53 torpedo for 'Aquaman'.
#art
https://t.co/4yZt9YXd2z
Hybrid-electric aircraft will need to generate megawatts of power using lightweight devices. Superconducting designs that achieve 20 kW/kg+ are the solution. A detailed breakdown of all components is provided as an example here:
https://t.co/AsmxPSDSaz