Skip to content

Posts tagged parachute

reusability

reusability published on 1 Comment on reusability

the hybrid jet/rocket spaceplane concept is being developed the british company ‘reaction engines’, a company who’ve been working on their ‘skylon’ spaceplane project for about the last 30 million years (so naturally i expect them to finish aaany day now).

the reusable two-stage rocket concept was pioneered by the american company ‘spacex’, who currently reuse the 1st stage of their ‘falcon 9’ rocket and are planning on reusing both stages on their upcoming ‘starship’ rocket. pretty much every other private space company is going this route. cuz you know, it actually works.

the ‘catch-the-rocket-in-midair’ concept sounds so insane you’d think i just made it up, but it’s actually the plan of the new zealand-based company ‘rocket lab’, who are eventually going to start catching their ‘electron’ rocket 1st stages with a helicopter. can’t wait to watch it.

of course, i could’ve also mentioned the space shuttle, but calling that “reusable” is about as generous as calling a potato chip a vegetable. “partially-somewhat-refurbishable” would be a more honest description.

perseverance

perseverance published on No Comments on perseverance

hearing about all the new technology perseverance used for it’s propulsive landing just made me think about how much of a miracle it was we succeeded the first time with curiosity.

but even that might not be as crazy as curiosity’s predecessors spirit and opportunity, which were covered in giant airbags, dropped from 10 metres above the ground, and bounced around on the martian surface for a while until they finally settled in an upright position. and somehow this worked perfectly both times. hey, if it’s stupid and it works, it ain’t stupid.

soyuz

soyuz published on No Comments on soyuz

confusingly, the soyuz is both the name of the rocket and the spacecraft, the latter of which has had 148 crewed missions as of this post (more than the space shuttle’s 135), with the first one being in 1966! if it ain’t broke don’t fix it, the russians say, especially when you’re working on a soviet budget.

there’s something so kerbal about landing in the middle of the desert with a single enormous parachute and tiny landing rockets firing just before touchdown to soften the impact. spare a thought for boris volynov, who rode soyuz 5 in 1969 when its parachute tangled and landing rockets failed, resulting in the spacecraft hitting the ground so hard it broke volynov’s teeth.

emu 3

emu 3 published on 2 Comments on emu 3

kids, always remember your parachute. or at least make sure your neighbours have insurance.

for the curious:
specific impulse = fuel efficiency
delta-v = amount of fuel (measured in potential velocity)
t.w.r. = thrust-to-weight ratio = rockety-power vs gravity
(if it’s less than 1, you won’t be going to space today)