Lockheed Martin unveils Space Shuttle replacement

Vegan Bob writes "Lockheed Martin released its proposal for the Crew Exploration Vehicle (CEV) in a recent Popular Mechanics article. NASA will choose this vehicle scematic or opt for the yet-released Northrop Grumman design in 2008. The CEV will replace the Space Shuttle program, and will eventually go to the moon (between 2015 and 2020)."

Comments

One or two questions related to these articles:

[Skyshadow]

Wait, what?

Why add an orbital rendezvous requirement to all missions? Why use a shape like this which, I presume, requires the use of failure-prone ceramic tiles for reentry protection instead of a tried-and-proven heat sheild when you're planning to use parachutes to land the thing anyhow? What's the advantage to using this thing over just a regular capsule if it's not necessarily reusable?

How does it possibly make sense to use the same vehicle for LEO missions as for moon and Mars missions? What happened to the important ideas behind Mars Direct or Semi-Direct (aka, having a seperate hab module that you can leave for future missions and making your fuel on Mars instead of hauling it with)? Does this signal that NASA is planning for Mars as just a set of "footprints and flagpoles" missions? Why are they planning a fly-by of Mars at all when the most dangerous part of a well-planned mission would be the part in transit rather than the part on the planet?

And perhaps most of all, why is it going to take us fifteen years to get back to the moon when we got there from scratch in less than ten the first time around? Heck, what's our goal in going back to the moon in the first place instead of concentrating on the much-more-promising Mars? Did we miss something the last time around?

In short: Just what, exactly, is going on here?

Re:One or two questions related to these articles:

[macpeep]

The benefit of a lifting body (or winged vehicle) is that you have more cross-track navigation control. Also, the g-loads on people inside the craft are much lower that way, which is good when they are coming back from a two year trip to Mars in zero gravity (or very low gravity while on Mars). Even for a long trip to the moon, it will be very helpful.

Orbital rendezvous is good for a number of things. It allows you to have modularity so you can assembler larger crafts, add special modules later on that you haven't even thought of now (as more advanced technology becomes available 10 years down the road), use it to dock with the International Space Station, use it to dock with possible rescue crafts, etc.

This is a vehicle for carrying people. It's not the full set of technologies needed to get to and land on Mars.

And it's taking 15 years because there's no Soviet Union that's making everyone piss in their pants in fear.

X-33!?!? VentureStar!?!?

[jzarling]

What about the X-33 and the VentureStar? Couldn't we just restart that program? The design is already worked out and the protoype of the X-33 was well on it way to completion.