Search results

This is starting to sound familiar:

So a JATO Junior, strapped to a 150 lb person and launched vertically, should accelerate them to ~ 270 mph at burnout at an altitude of 1800 ft and an apogee of a bit over 3000 ft. If horizontal on roller skates, they would achieve about 470 mph in a distance of about 4000 ft.

Surviving participants should increase the scores awarded by the judges.

Well, the user will likely be wearing roller skates, so a ramp would be fine.

https://airandspace.si.edu/collection-objects/rocket-motor-solid-fuel-12ns-350-jato-jet-assisted-take-unit/nasm_A19680551000 3-D (Length x Diameter): 64.8 × 15.9cm (2 ft. 1 1/2 in. × 6 1/4 in.) If I read the boilerplate correctly the rocket itself weighed 43.5 lbs full. Strap this to an adult...

Oh, I suppose. We'll restrict them to single stage. Everyone must wear goggles and a helmet and will be launched over water. Well, with all the pennants, bed curtains, capes, and other drag-inducing papier mache art work, perhaps not? Maybe compressed air/water bottle rockets could be used...

We need something like Red Bull's Flugtag with rockets.

From my experience as a mechanical engineer, yes, it is generally preferred that the behavior of the vehicle design does not instill terror with the passengers. Perhaps they could do a collaboration with Red Bull?

To be fair, it is a challenge to predict the empty mass of a vessel when the structural design is continuously evolving. Their initial concepts were much lighter than what they were able to actually build. The Starship and Superheavy version 1s gave them a starting data point, and they realized...

It's interesting that there appears to be ice on the leeward aft portion of the stage over the tank. It was in reentry plasma just 5 minutes before this touchdown.

Based on the rocket equation, the natural log of the mass ratio should be a constant, and so the mass ratio should remain constant. Making the rocket bigger would tend to increase the mass ratio, so payload capacity can increase to keep the ratio constant, and it's not a linear relationship.

I wonder if the TPS could still be incandescent at touchdown? The shuttle had an extended glide where the TPS was exposed to convective cooling with relatively high convection coefficients. The Starship is entering as a blunt body and the convective coefficients would be much lower as there is a...

I'd be curious to see video of the payload bay during re-entry. External views showed a pretty significant heat affected zone on the steel leeward of the TPS tiles. That payload bay area probably gets pretty hot just from radiation heat transfer. It will be interesting when they finally are...

Wreckage flying beautifully though...

Damage on aft end of fin.

That was explodey...

Some sort of vapor floating about in the payload bay.