Date: 12/04/2022 13:10:13
From: PermeateFree
ID: 1871906
Subject: NASA will test SpinLaunch's ability to fling satellites into orbit


SpinLaunch’s kinetic launch facility at Spaceport America, new Mexico is now doing “regular” sub-orbital test launches with exit velocities over 1,000 mph

NASA has signed up to test SpinLaunch’s extraordinary whirl ‘n’ hurl space launch technology, which accelerates a launch vehicle to hypersonic speeds using an electric centrifuge instead of a rocket, hurling it skyward like a space discus.

The idea behind SpinLaunch is as staggering as the company’s name is appropriate. The idea of winding up and throwing satellites most of the way into orbit just boggles the mind. But in initial testing, this company’s kinetic launch system, which looks externally a lot like a turbocharger, has shown promise as an environmentally-friendly, and potentially cost-effective replacement for first-stage rocket launches.

Not all launches – nobody’s suggesting astronauts should sit in a capsule enduring 10,000 G on the end of that long carbon-fiber arm as it spins up to extraordinary speed, then releases it skyward at more than six times the speed of sound (5,000 mph, or 8,047 km/h).

But the company says it’ll be appropriate for smaller launch vehicles weighing up to about 440 lb (200 kg), carrying ultra-ruggedized satellites capable of dealing with the forces involved. The SpinLaunch system will do the first part, flinging them high into the air, where a second-stage rocket can take over and give them the final push into orbit.

And the advantages are pretty compelling. SpinLaunch says that eliminating the first-stage rocket from the launch vehicle will cut out some 70 percent of the fuel and structures needed by a traditional launch vehicle, and that it can get appropriate loads into orbit using a quarter of the fuel, and at a tenth of the price.

NASA is one of many parties interested in this possibility, and it’s now signed a Space Act agreement with SpinLaunch to develop and integrate a NASA payload for this kinetic launch system, which will be flung skyward from Spaceport America, New Mexico, in a test flight later this year.


SpinLaunch promises to radically cut launch costs and fuel use, for orbital and sub-orbital payloads that can withstand the G forces of a kinetic launch

This, like all SpinLaunch “regular” test flights to date, will be a slower sub-orbital launch with a speed closer to 1,000 mph (1,600 km/h, Mach 1.3) than 5,000 mph. The payload will be designed to take a range of measurements, which will be analyzed by both groups. All non-proprietary information learned from this test will be published, and SpinLaunch says it’s working towards its first orbital launch in 2025.

“SpinLaunch is offering a unique suborbital flight and high-speed testing service, and the recent launch agreement with NASA marks a key inflection point as SpinLaunch shifts focus from technology development to commercial offerings,” said SpinLaunch Founder and CEO Jonathan Yaney. “What started as an innovative idea to make space more accessible has materialized into a technically mature and game-changing approach to launch. We look forward to announcing more partners and customers soon, and greatly appreciate NASA’s continued interest and support in SpinLaunch.”

Check out a render video showing how this remarkable system will work below.

https://youtu.be/TGO4LtCctTk

Reply Quote

Date: 12/04/2022 17:04:05
From: Peak Warming Man
ID: 1872051
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

They’d want some sort of fail safe system that prevents a launch with the lid still on, yeah.

Reply Quote

Date: 12/04/2022 18:29:20
From: Kingy
ID: 1872066
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

Peak Warming Man said:


They’d want some sort of fail safe system that prevents a launch with the lid still on, yeah.

I think they’ve got Uncle Arthur sitting on a chair near the lid, and when the revs are right, they give him the nod, he lifts the lid and they yeet it into space.

Reply Quote

Date: 12/04/2022 18:53:20
From: Bubblecar
ID: 1872073
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

If the spacecraft is going round & round & round inside that round thing, I don’t know why they think it will suddenly start going straight when they release it into that long straight tube.

Reply Quote

Date: 12/04/2022 18:56:25
From: The Rev Dodgson
ID: 1872076
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

Bubblecar said:


If the spacecraft is going round & round & round inside that round thing, I don’t know why they think it will suddenly start going straight when they release it into that long straight tube.

Law 1. A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

Law 2. When a body is acted upon by a force, the time rate of change of its momentum equals the force.

Law 3. If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.

Reply Quote

Date: 12/04/2022 18:59:16
From: Bubblecar
ID: 1872079
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

The Rev Dodgson said:


Bubblecar said:

If the spacecraft is going round & round & round inside that round thing, I don’t know why they think it will suddenly start going straight when they release it into that long straight tube.

Law 1. A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

Law 2. When a body is acted upon by a force, the time rate of change of its momentum equals the force.

Law 3. If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.

Yes but it will still be describing an arc.

Probably smash through the side of that tube and everyone will sigh and say, “That Elon, ay? I don’t know…”*

*This may not be a Musk product, I’m just assuming

Reply Quote

Date: 12/04/2022 19:01:32
From: The Rev Dodgson
ID: 1872081
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

Bubblecar said:


The Rev Dodgson said:

Bubblecar said:

If the spacecraft is going round & round & round inside that round thing, I don’t know why they think it will suddenly start going straight when they release it into that long straight tube.

Law 1. A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

Law 2. When a body is acted upon by a force, the time rate of change of its momentum equals the force.

Law 3. If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.

Yes but it will still be describing an arc.

Probably smash through the side of that tube and everyone will sigh and say, “That Elon, ay? I don’t know…”*

*This may not be a Musk product, I’m just assuming

Why will it be describing an arc if the force making it move in an arc is removed?

Reply Quote

Date: 12/04/2022 19:01:37
From: Peak Warming Man
ID: 1872082
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

The Rev Dodgson said:


Bubblecar said:

If the spacecraft is going round & round & round inside that round thing, I don’t know why they think it will suddenly start going straight when they release it into that long straight tube.

Law 1. A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

Law 2. When a body is acted upon by a force, the time rate of change of its momentum equals the force.

Law 3. If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.

Yes the electricity will be shut off to the magnets that are spinning it at precisely the right time and place controlled by a pre-programmed computer and then uncle Arthur takes care of the rest.

Reply Quote

Date: 12/04/2022 19:03:32
From: JudgeMental
ID: 1872084
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

The Rev Dodgson said:


Bubblecar said:

The Rev Dodgson said:

Law 1. A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

Law 2. When a body is acted upon by a force, the time rate of change of its momentum equals the force.

Law 3. If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.

Yes but it will still be describing an arc.

Probably smash through the side of that tube and everyone will sigh and say, “That Elon, ay? I don’t know…”*

*This may not be a Musk product, I’m just assuming

Why will it be describing an arc if the force making it move in an arc is removed?

perxactly.

Reply Quote

Date: 12/04/2022 19:04:23
From: Bubblecar
ID: 1872086
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

The Rev Dodgson said:


Bubblecar said:

The Rev Dodgson said:

Law 1. A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

Law 2. When a body is acted upon by a force, the time rate of change of its momentum equals the force.

Law 3. If two bodies exert forces on each other, these forces have the same magnitude but opposite directions.

Yes but it will still be describing an arc.

Probably smash through the side of that tube and everyone will sigh and say, “That Elon, ay? I don’t know…”*

*This may not be a Musk product, I’m just assuming

Why will it be describing an arc if the force making it move in an arc is removed?

Gravity.

Reply Quote

Date: 12/04/2022 19:07:57
From: The Rev Dodgson
ID: 1872090
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

Bubblecar said:


The Rev Dodgson said:

Bubblecar said:

Yes but it will still be describing an arc.

Probably smash through the side of that tube and everyone will sigh and say, “That Elon, ay? I don’t know…”*

*This may not be a Musk product, I’m just assuming

Why will it be describing an arc if the force making it move in an arc is removed?

Gravity.

But:
1. Gravity is a miniscule force compared with the force required to make it travel in a small radius circle at that speed.

2. If the restraining force is removed when it is travelling directly upwards gravity won’t make it follow an arc.

Reply Quote

Date: 12/04/2022 19:10:17
From: JudgeMental
ID: 1872092
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

The Rev Dodgson said:


Bubblecar said:

The Rev Dodgson said:

Why will it be describing an arc if the force making it move in an arc is removed?

Gravity.

But:
1. Gravity is a miniscule force compared with the force required to make it travel in a small radius circle at that speed.

2. If the restraining force is removed when it is travelling directly upwards gravity won’t make it follow an arc.

but but, the rotation of the earth whilst the object is in flight will give it the appearance of travelling in an arc. I think.

Reply Quote

Date: 12/04/2022 19:10:37
From: The Rev Dodgson
ID: 1872094
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

The Rev Dodgson said:


Bubblecar said:

The Rev Dodgson said:

Why will it be describing an arc if the force making it move in an arc is removed?

Gravity.

But:
1. Gravity is a miniscule force compared with the force required to make it travel in a small radius circle at that speed.

2. If the restraining force is removed when it is travelling directly upwards gravity won’t make it follow an arc.

OTOH, I think it is highly unlikely this thing will ever work in practice.

Reply Quote

Date: 12/04/2022 19:11:12
From: Bubblecar
ID: 1872095
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

The Rev Dodgson said:


Bubblecar said:

The Rev Dodgson said:

Why will it be describing an arc if the force making it move in an arc is removed?

Gravity.

But:
1. Gravity is a miniscule force compared with the force required to make it travel in a small radius circle at that speed.

2. If the restraining force is removed when it is travelling directly upwards gravity won’t make it follow an arc.

Don’t take my previous comments too seriously :)

Reply Quote

Date: 12/04/2022 19:12:26
From: The Rev Dodgson
ID: 1872096
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

Bubblecar said:


The Rev Dodgson said:

Bubblecar said:

Gravity.

But:
1. Gravity is a miniscule force compared with the force required to make it travel in a small radius circle at that speed.

2. If the restraining force is removed when it is travelling directly upwards gravity won’t make it follow an arc.

Don’t take my previous comments too seriously :)

OK :)

Reply Quote

Date: 12/04/2022 19:12:36
From: sibeen
ID: 1872097
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

The Rev Dodgson said:


The Rev Dodgson said:

Bubblecar said:

Gravity.

But:
1. Gravity is a miniscule force compared with the force required to make it travel in a small radius circle at that speed.

2. If the restraining force is removed when it is travelling directly upwards gravity won’t make it follow an arc.

OTOH, I think it is highly unlikely this thing will ever work in practice.

Thunderf00t did a take down video on it a few months ago/

Reply Quote

Date: 12/04/2022 20:47:45
From: mollwollfumble
ID: 1872128
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

> SpinLaunch’s kinetic launch facility at Spaceport America, new Mexico is now doing “regular” sub-orbital test launches with exit velocities over 1,000 mph.

> Up to 200 kg.

Wow. I missed that.

The limitation is air drag. If you start out with a velocity fast enough to get into orbit then air drag reduces that velocity exceedingly rapidly, limiting the attained altitude.

BUT.

Firing an active rocket out of a spin-launch system actually gives the best of both worlds. The spin-launch completely substitutes for the rocket’s first stage. So a three stage rocket is exactly equivalent to a two stage rocket with a spin-launch start. This reduces the total rocket mass by about 2/3. It also reduces the required spin-launch speed by something like 90%.

Reply Quote

Date: 13/04/2022 17:18:45
From: Ogmog
ID: 1872407
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

If they want to experiment on its use as a mode of transportation
right off the top of my head
I can think of a few idiots I’d love to see FLUNG off the F’n Planet:

Reply Quote

Date: 16/04/2022 02:35:37
From: mollwollfumble
ID: 1873141
Subject: re: NASA will test SpinLaunch's ability to fling satellites into orbit

mollwollfumble said:


> SpinLaunch’s kinetic launch facility at Spaceport America, new Mexico is now doing “regular” sub-orbital test launches with exit velocities over 1,000 mph.

> Up to 200 kg.

Wow. I missed that.

The limitation is air drag. If you start out with a velocity fast enough to get into orbit then air drag reduces that velocity exceedingly rapidly, limiting the attained altitude.

BUT.

Firing an active rocket out of a spin-launch system actually gives the best of both worlds. The spin-launch completely substitutes for the rocket’s first stage. So a three stage rocket is exactly equivalent to a two stage rocket with a spin-launch start. This reduces the total rocket mass by about 2/3. It also reduces the required spin-launch speed by something like 90%.

> Not all launches – nobody’s suggesting astronauts should sit in a capsule enduring 10,000 G on the end of that long carbon-fiber arm as it spins up to extraordinary speed, then releases it skyward at more than six times the speed of sound (8,000 km/h).

That’s way faster than needed for substituting SpinLaunch for first stage of a multiple stage rocket. For a space shuttle launch, replacing the first stage with a spin launch would require a spin launch speed near 433 m/s which is near 1,500 km/h.

As drag is proportional to velocity squared, the drop from 8,000 to 1,500 km/h reduces the air drag by a factor of nearly thirty.
Centrifugal force is m V^2 / r, so that drops from 10,000 G to a “mere” 350 G. Which is much easier to handle.

Reply Quote