Designing a Spacecraft any tips?

[HellRanger2558]

I've been working on this passion project for a couple of years now and was wondering if you guys have any tips all I can say right now is.Its lunar capable,going to carry 8-10 crew and 2 landers or cargo,reusable,and easily modifiable for Earth orbit operations.

 

[berkeman]

I've been working on this passion project for a couple of years now and was wondering if you guys have any tips all I can say right now is.Its lunar capable,going to carry 8-10 crew and 2 landers or cargo,reusable,and easily modifiable for Earth orbit operations.

Welcome to the PF.

What's a Passion Project?

Since you have been working on it for a copule of years, can you post a summary of your work so far? That would be the best way to start out your thread asking for comments...

 

[HellRanger2558]

It's a project I do just because I enjoy it and I'm pretty much still in the designing phase I finished gathering information I needed I'm having a issue making a LOx/LH2 fuel system fit into a 15 by 30 ft space.

Btw I'm still in high school so there is still a lot I don't know so don't expect it to be perfect

 

[berkeman]

Do you have a rocketry club at your school or in the nearby area? If not, maybe try to start one.

 

[HellRanger2558]

Do you have a rocketry club at your school or in the nearby area? If not, maybe try to start one.

I live in a small farming town and most of my classmates look at me like I'm a nutjob when I start getting into talking about rocket engines so I don't think that's going to happen

 

[Noisy Rhysling]

Define the mission(s), design to meet the mission requirements. Space horse before space cart.

 

[sandy stone]

If you intend to launch from the Earth's surface, then it sounds like you are designing your own Saturn V. They were quite a bit bigger than 15 x 30 feet, IIRC. It takes a lot of energy, IOW fuel, to get up to orbit, and chemical propellants are rather bulky. It might be more doable if you were willing to launch from low Earth orbit.

 

[Noisy Rhysling]

The laser-launching system would be nice if it should actually ever work. Lasers stay on Earth while the ship goes up.

 

[HellRanger2558]

Basically it's going to be a shuttle type craft mounted to a SLS type rocket the missions would be space station construction in LEO or lunar orbit also lunar lander deployment the Shuttle-SLS idea is just a baseline of what I'm thinking.And for Leo operations the core stage would be replaced with a ET and SRB's

 

[sandy stone]

You intend to use the same type of vehicle to ascend to orbit and to do lunar missions? Obviously getting up to orbit, and particularly returning using atmospheric braking, puts stringent aerodynamic demands on the vehicle that would not apply to LEO-lunar missions. And sorry, what's an ET?

 

[donpacino]

I've been working on this passion project for a couple of years now and was wondering if you guys have any tips all I can say right now is.Its lunar capable,going to carry 8-10 crew and 2 landers or cargo,reusable,and easily modifiable for Earth orbit operations.

That's all well and good, but you won't be able to actually create (fully build a working model) a lunar capable rocket carrying 8-10 crew members by yourself. Designing for theory is all well and good, but there will be things you have overlooked.

If you are passionate about rocketry and space, as I think you are, then maybe try designing your own model rocket. Call it a small scale prototype. One must walk before they can run. By building a rocket and evaluating its usage, you will likely learn some things that you can incorporate into your passion project. :)

 

[Vitro]

@HellRanger2558, apply for an internship at SpaceX and impress Elon Musk!

 

[HellRanger2558]

You intend to use the same type of vehicle to ascend to orbit and to do lunar missions? Obviously getting up to orbit, and particularly returning using atmospheric braking, puts stringent aerodynamic demands on the vehicle that would not apply to LEO-lunar missions. And sorry, what's an ET?

A external tank and SLS SRB's similar to the space shuttle design for LEO missions and some kind of first stage rocket for lunar operations like the SLS core stage.

 

[HellRanger2558]

If you intend to launch from the Earth's surface, then it sounds like you are designing your own Saturn V. They were quite a bit bigger than 15 x 30 feet, IIRC. It takes a lot of energy, IOW fuel, to get up to orbit, and chemical propellants are rather bulky. It might be more doable if you were willing to launch from low Earth orbit.

The 15 by 30 system is for transearth injection and maybe lunar orbit circulation.I'm wondering if that's enough space to power the 3 SSME's for a worthwhile burn or do i need a different design?

 

[HellRanger2558]

@HellRanger2558, apply for an internship at SpaceX and impress Elon Musk!

A high school student with a 2.0 gpa? I would get laughed out of the room i appreciate the confidence though! My plan is to enlist in the army,get my aerospace degree with my gi bill,and try to join NASA hopefully.

 

[donpacino]

The 15 by 30 system is for transearth injection and maybe lunar orbit circulation.I'm wondering if that's enough space to power the 3 SSME's for a worthwhile burn or do i need a different design?

You arent giving us nearly enough information. what's your end goal with "designing" this

 

[HellRanger2558]

In really dumbed down terms?I basically trying to make a lunar capable space shuttle and have it available to do LEO missions as well with easy modifications.For the lunar configuration think of a space shuttle slapped onto the slide of a SLS for now.

 

[donpacino]

In really dumbed down terms?I basically trying to make a lunar capable space shuttle and have it available to do LEO missions as well with easy modifications.For the lunar configuration think of a space shuttle slapped onto the slide of a SLS for now.

youve said that...
are you just doing high level conceptual. are you trying to build a model, are you trying to build a full scale working version

 

[HellRanger2558]

Trying for a full scale version but I'm still in the very early stages such as aerodynamic testing and the such mainly I came here because I couldn't find the fuel consumption stats for the SSME's and was wondering if the 15ft fuel system would even be worth it or not enough for a good burn.i apologize for being very vague.

 

[dmac257]

Full scale you say? Do you have a LOT of money for materials and to hire peeps to help build it? Agree with Noisy, baby steps, horse before the cart.

dmac257