Project M-II + Negi-5 launch vehicles

[Athena]

May i have permission to launch the first still-in-development satellite of the Philippine Space Agency on one of these?

Also, nice work on it, the colors make it look nice (Looks like Jarvis with a mix of the Delta's)

Are you planning to make a Super-Heavy version of it as well?

 

[Pipcard]

May i have permission to launch the first still-in-development satellite of the Philippine Space Agency on one of these?

Definitely.

Also, nice work on it, the colors make it look nice (Looks like Jarvis with a mix of the Delta's)

Thanks.

Are you planning to make a Super-Heavy version of it as well?

Not really. The interstage decals would be covered up if there were 5 common cores.

 

[Pipcard]

The initial release will use Velcro Rockets because of its autopilot (which works well even at x10 time acceleration, allowing for quicker testing of payload capacity).

 

[Pipcard]

Another reason why there isn't a "super-heavy M-II": the upper stage is too small for those payloads.

I also figured out how to properly simulate cross-feed:
-The central core stage burns for a certain amount of time.
-The strap-on booster cores will burn for two-thirds of that time.
-The fuel ratios will be: 2/3 : 1 + 2/3 : 2/3 (total of 3), and the central core will actually have 1 when the two boosters separate. The 2/3s will burn at the same rate.

---------- Post added 05-16-13 at 02:47 PM ---------- Previous post was 05-15-13 at 08:04 PM ----------

Maybe I shouldn't release this for others. Apparently an add-on is only worth releasing if it is .dll-based.

 

[Face]

Maybe I shouldn't release this for others. Apparently an add-on is only worth releasing if it is .dll-based.

This is your decision. Do it, or do it not.

If your sarcasm stems from this thread, then please be aware that a call for feedback like this:

If you rated this 1 or 2 DGs, please give a reason.

will also get you opinions that might not conform with your view of things.

If you continue to react this way to honest opinions about your work (that you even asked for), you will sooner or later get no feedback at all, resulting in lost opportunities to learn and improve your own skills. Do you want this to happen?

 

[Pipcard]

Okay then. It's just that, in that other thread, it was assumed that I already knew C++ when I didn't.

 

[Pipcard]

Decided to add plumbing to the second stage:

 

[Pipcard]

Dual Payload Append System (DPAS)

---------- Post added at 08:15 PM ---------- Previous post was at 05:37 PM ----------

The M-II Heavy is capable of carrying 12400 kg to GTO (compare with Ariane 5 ME, Falcon Heavy, or Jarvis-C).

(29700 kg to LEO)

edit: but it will be 12000 with DPAS.

---------- Post added 05-20-13 at 04:35 PM ---------- Previous post was 05-19-13 at 08:15 PM ----------

Just a promo/eye-candy shot:

 

[PhantomCruiser]

Looking good! :thumbup:

 

[Pipcard]

Longer fairing and DPAS (19 m > 15.8 m) to accommodate two 6000-kg satellites.
([ame="http://www.orbithangar.com/searchid.php?ID=3275"]DirecTV 10,11,12[/ame])

GTO scenarios will take place from Ascension Island (previous GTO figures were for a launch from Cape Canaveral). If I could get around to doing it, I want to make my own near-equatorial launch site on a fictitious island.

 

[dacamp66]

How about a RW launch location, such as Johnson Atoll (16°45′N 169°31′W)?

 

[Pipcard]

How about a RW launch location, such as Johnson Atoll (16°45′N 169°31′W)?

No, the launch site will be called Negishima Space Center. Hatsunia, the fictional country that owns this island, is based off Japan. So the southernmost parts of Hatsunia correspond to the southernmost parts of Japan.

Southermost island of Japan (uninhabited): [ame="http://en.wikipedia.org/wiki/Okinotorishima"]Okinotorishima[/ame] (20.4°N)

Southermost island of Japan (inhabited): [ame="http://en.wikipedia.org/wiki/Hateruma"]Hateruma[/ame] (24.1°N)

I want the island close to be enough to the equator (for the speed boost), but close enough to my Japan-analogue (for it to be plausible). I'm thinking 13.9 20°N.

 

[Pipcard]

SRB derived launch vehicle with LH2/LOX upperstage??

Negi-5 launch vehicle:

Payload capacity is about 2 tonnes to LEO; the upper stage is inspired by the H-I's cryogenic second stage.

Looks like it might be good for the booming smaller payloads market....

---------- Post added 12-23-13 at 12:25 AM ---------- Previous post was 12-22-13 at 09:41 PM ----------

On second thought, it might be an all-solid launcher just like Mu-V/Epsilon. Just like Uchinoura Space Center, the small satellite launchpad at Negishima was originally designed for launchers with solid propellant (not cryogenic), and I don't know how I can justify the spending of hypothetical money on hypothetical modifications on the pad. Although, the upper stage had existed before in Hatsunese canon (as the second stage of an H-I equivalent)

 

[Pipcard]

Negi-5 will feature two solid stages + one hypergolic stage (N₂O₄/Aerozine-50) inspired by the N-I second stage.

All-solid launch vehicles exist in real life because of their simple nature. But, if someone wants to launch a payload with this rocket in Orbiter, an all-solid rocket isn't very user friendly, because it cannot be stopped. So, a hypergolic stage was selected for its simplicity (storable, no fuel pumping at launch pad required) and controllability. It is also able to de-orbit itself to minimize the risk of space debris.

Payload capacity is still about 2 tonnes to LEO.

 

[Pablo49]

Question, why Yamaha?

 

[Pipcard]

Question, why Yamaha?

Because they made the Vocaloid software (Miku being a Vocaloid from Crypton Future Media).

 

[Loru]

Question, why Yamaha?

Well. In japan business model for big corporations is quite different. You don't expect for example Chevrolet to make cellphones or Ford to make pianos under single brand but that's common practice in Japan.

Yamaha: motorbikes, boat engines & boats, pianos, guitars, drums ...
Honda: motorbikes, cars, aircrafts, farming equipement, water pumps ...
Roland: musical instrumens & equipement, industrial scale printing machines, plotters...
Mitsubishi: aerospace components, air conditioners, aircraft, automotive components, forklift trucks, hydraulic equipment, machine tools, missiles, power generation equipment, ships, and space launch vehicles...

etc etc etc..

 

[orb]

etc etc etc..

With some exceptions, like for example Matsushi_.ta until 2003, but well, it's now only Panasonic (and isn't automatically censored anymore ).

 

[Pipcard]

Well. In japan business model for big corporations is quite different. You don't expect for example Chevrolet to make cellphones or Ford to make pianos under single brand but that's common practice in Japan.

Yamaha: motorbikes, boat engines & boats, pianos, guitars, drums ...
Honda: motorbikes, cars, aircrafts, farming equipement, water pumps ...
Roland: musical instrumens & equipement, industrial scale printing machines, plotters...
Mitsubishi: aerospace components, air conditioners, aircraft, automotive components, forklift trucks, hydraulic equipment, machine tools, missiles, power generation equipment, ships, and space launch vehicles...

etc etc etc..

There's a term for this: conglomerates.

 

[Pipcard]