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US Space Force reveals first look at secretive X-37B space plane in orbit

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Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#51
post #22
post #7

Earlier quoted context omitted.

a pretty good satire of the whole thing: https://en.wikipedia.org/wiki/Space_Force_(TV_series)

Space Force song written just after the announcement: https://www.youtube.com/watch?v=_AUXpnB065o

schmoyoho are incredible at making these songs, and so quickly after each event. I'm amazed they usually only get 10s of thousands of views, with the odd exception over 1m.

Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#52

Interestingly since Space Force was created by Trump who sees it as a prestige project and it depends on Musk's SpaceX for launches this is probably one of the most secure agencies in the current administration.

*Financially secure.

Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#53
post #30

Earlier quoted context omitted.

How big is the payload bay on this thing? The whole craft is only 29 feet long, so it's not carrying a Hubble in to orbit.

The NRO doesn't need this thing to lift its birds into orbit. Keyhole satellites have gotten rides on Deltas and Titans, so probably going to be sticking their thumbs out in the direction of SpaceX pretty soon.

Already have, SpaceX have been doing a few NRO launches. Delta and Titan are retired, and Atlas is down to its last few.

Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#54
post #8

Why might it be desirable to have an observation craft so far away from the earth? I'm having a hard time imagining the advantage compared to being a bit closer, unless it's a more energy-efficient parking situation while the vehicle isn't in active use.

"Why might it be desirable to have an observation craft so far away from the earth?"

more range the merrier in case there is alien invasion. you would need aircraft that allow travel interplanetary system

Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#55
post #8

Why might it be desirable to have an observation craft so far away from the earth? I'm having a hard time imagining the advantage compared to being a bit closer, unless it's a more energy-efficient parking situation while the vehicle isn't in active use.

Less predictable orbit.

Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#57
post #8

Why might it be desirable to have an observation craft so far away from the earth? I'm having a hard time imagining the advantage compared to being a bit closer, unless it's a more energy-efficient parking situation while the vehicle isn't in active use.

My understanding is it’s on an offset elliptical orbit. This is essentially the farthest point away from earth with the other end of orbit being very close to Earth. From a tactical perspective, that means this can interact with basically any other satellite.

Interact as in fly-by repair? Or interact as in interfere/tamper/destroy?

Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#58

Interestingly since Space Force was created by Trump who sees it as a prestige project and it depends on Musk's SpaceX for launches this is probably one of the most secure agencies in the current administration.

*Financially secure.

(until "let's deorbit and go to mars")

Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#59

Earlier quoted context omitted.

My understanding is it’s on an offset elliptical orbit. This is essentially the farthest point away from earth with the other end of orbit being very close to Earth. From a tactical perspective, that means this can interact with basically any other satellite.

As well as change orbital characteristics (apogee, perigee, inclination) at reasonably low cost, enabling closer observation of specific portions of Earth, or of objects in space. Burns at closest approach (perigee) have the largest influence on total orbital characteristics. Burns at furthest approach (apogee) can raise the entire orbit if desired. (Or so I understand.)

Could another benefit be the ability to change payloads? If there was a desire to change the orbits and payloads, then could these serve a function as a more responsive version of existing satellites?

Re: US Space Force reveals first look at secretive X-37B space plane in orbit

#60
post #44

How does it have enough Delta-V to get into that distant of an orbit? Is it able to maneuver to different orbits and inclination? Is it able to return to earth? Or, is it more of a satellite than a “plane”? This is my first time learning about this space plane, so apologies if my questions are naive.

This flight was launched with a Falcon Heavy, that is why it has more energy to reach high orbit than the previous launches with an Atlas V booster.

When you are in a highly eccentric orbit (meaning the point in the orbit farthest from Earth (apogee) is much higher than the lowest point (perigee)) like this one there are several maneuvers you can do to significantly change your orbit with relatively little energy. The article describes some of the things they are testing.

A small breaking burn at apogee will lower the perigee into the upper atmosphere and they can then do aerobreaking (use atmospheric drag to lose energy) to slow down enough to land.

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