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Todd Burch
14-Year Member
Sonic boom as the vehicle goes transsonic (at a few miles in altitude).
It seems like the vertical orientation of the vehicle and corresponding radius ^2 or 3 involvement of viscous damping fluid air would kill the effect more rapidly. A lot more rapidly. Maybe less than 100 miles. Radius.
And that you could mitigate the land habitat impact by aiming out to sea prior to the transition to supersonic. The idea is to get the shock wave that travels over land as high as you can get it. More damping.
I think all this has been worked out and done.
My question is: for vertical take offs and landings with one side ocean, what is the actual managed sonic boom distance?
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Bet TSLA
Active Member
Apple. Notably for iPods. But other stuff too. Not a bad company to emulate.
Weekend..
At IAC EM talked about using PV energy, draw CO2 from the air to create CH4. He said this could also be used on earth. Perhaps it's a new product with PV, PowerPack and a CH4 machine? It sounds like the project TIM spec.
“We’ve already started building the system,” he said. “The tooling for main tanks has been ordered, the facility is being built. We’ll start construction of the first ship in about six to nine months. I feel fairly confident we can complete the ship and be ready for launch in about five years.”
Elon Musk revises Mars plan, hopes for boots on ground in 2024 – Spaceflight Now
At IAC EM talked about using PV energy, draw CO2 from the air to create CH4. He said this could also be used on earth. Perhaps it's a new product with PV, PowerPack and a CH4 machine? It sounds like the project TIM spec.
“We’ve already started building the system,” he said. “The tooling for main tanks has been ordered, the facility is being built. We’ll start construction of the first ship in about six to nine months. I feel fairly confident we can complete the ship and be ready for launch in about five years.”
Elon Musk revises Mars plan, hopes for boots on ground in 2024 – Spaceflight Now
Up to 2000 registered cars in Norway this quarter. 52 so far today.
Paracelsus
Active Member
Regarding SpaceX BFR...
* G forces- I had a business for many years giving aerobatic rides in an open-cockpit biplane. I found that people of all ages could tolerate short exposures to 3 Gs pretty well while seated with the Gs pulling downward along the spine. Tolerance of 3 Gs while seated with back to the G forces would be easily tolerated.
* Weather- The advantage of intra-planetary rocket travel is that the destination weather is a known at time of liftoff and about 30 minutes before landing. Don't like the destination weather? Delay the liftoff. Weather prediction gets easier and easier the shorter the time span. Fast-building thunderstorms would likely be the only serious weather phenomenon that could evolve within 30 minutes and the craft could likely maneuver to an alternate landing spot while still above the atmosphere if something funky was developing.
* G forces- I had a business for many years giving aerobatic rides in an open-cockpit biplane. I found that people of all ages could tolerate short exposures to 3 Gs pretty well while seated with the Gs pulling downward along the spine. Tolerance of 3 Gs while seated with back to the G forces would be easily tolerated.
* Weather- The advantage of intra-planetary rocket travel is that the destination weather is a known at time of liftoff and about 30 minutes before landing. Don't like the destination weather? Delay the liftoff. Weather prediction gets easier and easier the shorter the time span. Fast-building thunderstorms would likely be the only serious weather phenomenon that could evolve within 30 minutes and the craft could likely maneuver to an alternate landing spot while still above the atmosphere if something funky was developing.
Thumper
Active Member
Not my area of expertise, but I think the trajectory has little to no choice but a straight great circle direction on the lift off side of the flight. Any deviation from this would be a huge fuel penalty. On the landing end, there should be some wiggle room. Retro fire is a requirement and could be aimed slightly one way or another. Steering paddles are pure aero and should give landing flexibility. I may be all wrong.
Jonathan Hewitt
Active Member
I haven't read this thread the last couple months after losing my job (who would have thought that would make me more busy!) but wanted to let everyone know I stayed true to my word and took one for the team to help 3rd quarter numbers! So if numbers suck next week I did my best. I cashed out a little for a nice down-payment right under $380 on the way up and took delivery in time for the .99% APR financing for the rest.I was very tempted to cancel my Model 3 reservation and buy a Model X when the stock was in the $380s. When we get back there I probably will. Sorry for being a weak reservation holder guys...
We ended up with a Black inventory Model X 100D.
A few things were new. If you look at the mars reentry animation, they are flying it crosswise for a while to burn off speed without using fuel.
Right now the landing is a triple sonic boom: nozzle tip, legs, and paddles. Every section change.
Elon said no legs, and the back to back orbital refueling says nozzles are flush with body... not sure about steering paddles and Mars, they might go with a ring of fixed angle steering rocket ports at the last point of constant section, or there about.
Says one big boom...
My interpretation was that the 1st stage didn't have legs and would land on the launch mount. The second stage did have legs in the Moon image, need to keep the nozzles off the surface.
sundaymorning
Active Member
Which Tesla killer is next?
Faraday Future Pulls Out Of Nevada, Officially Gives Up Land And Tax Incentives
Faraday Future Pulls Out Of Nevada, Officially Gives Up Land And Tax Incentives
Drumheller
Active Member
Congratulations!
Is my monitor messing up? That doesn't look very black to me.
Jonathan Hewitt
Active Member
Thanks! I had it wrapped with 3M Satin Frozen Vanilla. Notice the side mirrors are still the original color
I had them applied with ceramicpro to help with cleaning.
Drumheller
Active Member
Thanks! I had it wrapped with 3M Satin Frozen Vanilla. Notice the side mirrors are still the original color
ooooooh, nice! I did not catch the mirrors. Looks very nice to me! Thanks for clearing that up for me
Jonathan Hewitt
Active Member
Thanks! I think it looks even better in person. I'm interested to park next to a "real" white Model X and see if they give me funny looks haha.ooooooh, nice! I did not catch the mirrors. Looks very nice to me! Thanks for clearing that up for me
bdy0627
Active Member
Neither. I believe it is within 3 days of end of quarter. Sunday, Monday, or Tuesday.
I had noticed your posts on TMC had dropped recently. Be well my TMC friend. The only thing better looking than the X in that picture is your family.
You are a lucky man. Hope the 'work' thing comes together for you.
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