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PI-02 Protean Interceptor by Kodai-Okuda PI-02 Protean Interceptor by Kodai-Okuda


GOVERNMENT: Jovian Defense Forces/Neo-Hebrews of Saturn
TYPE: Protean Interceptor (PI)
MODEL: Iapetus Arms PI-02 Raven
             FIGHTER MODE
             LENGTH: 70.65 feet
             WIDTH: 50.4 feet
             HEIGHT: 13.5 feet

             ROBOT MODE
             DEPTH: 23.5 feet
             WIDTH: 39.6 feet
             HEIGHT: 79.2 feet

MATERIAL: Crystal Composite
POWER PLANT: Macrotechnologies IPFF-1200 Ion Plasma Fusion Furnace
OUTPUT: 1200 megawatts
ARMOR TYPE: Crystal Composite

CREW: 1 Pilot


             1x DængJäger RWE-160 robot walker engine
             SPEED: 40 mph

             2x Stellar Dynamics SD-FT-1.2 10-megawatt fusion thrusters
             SPEED:15,200 mph each (30,400 mph total)

             2x Macrotechnologies IPFE-80 80-megawatt ion plasma fusion engine
             SPEED: 30,400,000 mph each/.0454C each (60,800,000 mph/.09C combined)


             PRIMARY (OFFENSIVE):
             1x Titan Technologies TT-GP903AC triple-barrel 90-millimeter 3.5-ton gunpod unit; Effective Range: 12.5 miles; Payload: 600 rounds in a belt-fed autoloading detachable helical magazine; ROF: fires in bursts of 3, 12, or 30 rounds with a cyclic rate of up to 900 rounds per minute.

             PRIMARY (ASSAULT):
             2x Saturn Arms SA-RFE-05 5-megawatt rapid-fire electromagnetic particle accelerator cannon; Effective Range: 25 miles; Payload: unlimited with 250-megawatt nuclear battery clutch system; ROF: fires up to 50 blasts per ten seconds in bursts of 10 blasts each.

             SECONDARY (ASSAULT):
             32x Pallas Arms PA-MM105 5-shot mini-missile launcher with 10-pound fusion bolt (HEAP) or heavy fusion (nuclear) tipped warhead; Effective Range: 422 miles; Payload: 10 torpedoes; ROF: 1, 2, 3 or all 5 at once each for a total of sixty missiles from all 12 launchers at once in a single volley.

             TIRTIARY (DEFENSIVE):
             2x Pallas Arms PA-MM205 20-shot mini-missile launcher with 10-pound fusion bolt (HEAP) or heavy fusion (nuclear) tipped warhead; Effective Range: 422 miles; Payload: 40 mini-missiles each; ROF: 1 to 20 missiles per launcher per volley.  Up to thirty volleys can be launched per minute.

             2x Iapetus Arms IA-PC-01 1-megawatt rapid-fire PHELAC gun; Effective Range: 8 miles; Payload: unlimited with 150-megawatt nuclear battery clutch system; ROF: fires up to 150 blasts per ten seconds in bursts of 30 blasts each.

             (OUTSIDE ORDINANCE):
             The PI-02 Raven was able to carry bombs, missiles, gunpods, and armor upgrade systems on externally mounted hardpoints.  These hardpoints were located at strategic positions all over the craft.  There was one large hardpoint on the outer side of each leg.  Each of the leg hardpoints was able to carry up to ten tons of ordinance.  There were two “chest” section hardpoints designed for up to ten tons of payload each.  There was one arm hardpoint per arm, each of which was designed for up to five tons of additional armor/systems, and the top of the I-Field generator blisters on the trailing edge of each wing also had a 10-ton hardpoint for additional armor or booster systems.  This gave the craft a maximum payload of 70 tons.


             1x Microwave Radio Communications array with a 12,000-mile range.
             1x LADAR array with a range of 10,000 miles.
             1x Passive EMS array with a 100,000-mile range.
             1x Active EMS array with a range of 1000 miles.
             1x Laser Communications array with a 80,000-mile range.
             1x Multispectral video/optical array with a range of 1000 miles.
             1x Gravitational/Antigravity Control Unit; Effect: Provides artificial lift, g-force compensation, and enhanced maneuverability.


             2x Macrotechnologies IF-30 I-Field omnidirectional ion field generators; Range: 450 feet from hull; Power Requirement: 30 kilowatts; Output: absorbs up to 60 gigajoules of energy weapon damage.

             2x Pallas Arms PA-AM282 28-shot 2-pound anti-missile bomblets; Effective Range: 200 yards; Payload: 40 bomblets each; ROF: 1-28 bomblets per discharge.

             1x Titan-Industrial TI-HCS heavy combat shield; Weight:3 tons, Dimensions: 29 feet long x 22 feet wide x 1.65 feet thick; Armor Type: Crystal Composite; Armor Thickness: 4 inches.

         The Iapetus team originally conceived the PI-02 Raven Protean space interceptor as a light space bomber for the EFSM assault on Mars in 2076 AD.  They dubbed the initial design the PB-02 Protean bomber.  However, General Walsh had chosen to put off the Protean design in favor of the HBR-01 series of heavy battle robots.  The team shelved the PI-02 until the JDF formed in 2077 AD, and the Saturn Fleet called for the creation of a fighter that could intercept enemy units before they could enter the Saturn sphere.  This led Iapetus Industries (a newly formed Macrotechnologies company) to revisit the old PB-02 idea and rework it into a much smaller version of the 70-ton bomber design the EFSM engineers had originally created.  The Iapetus design team used the very successful Earth Federal Republic HSF-01 heavy space fighter as the basis for their new transformable interceptor.  The result was the PI-02 Raven.
         The Raven first saw action almost as soon as the initial production models had rolled off the assembly line in 2077.  The PI-02 was a key weapon used the during the Battle of the Vesta Atlas gap in 2077 when the JDF came to the aid of the fleeing EFSM fleet that was under assault by the Earth Federal Space Navy armada.  During this battle, the PI-02 destroyed enemy fighters, battle robots, and spacecraft with a high rate of success that even the PS-01A Archangel could not match.  The performance of this fighter ensured its continued production and use in the Saturn forces for many decades afterwards.  The only major drawback of this fighter was its price tag.
      The PI-02 used a DængJäger RWE-160 160-megawatt robot walker engine as its only ground propulsion system.  This walker engine propelled the large 50-ton Protean fighter at a modest 40 mph.
      The main interplanetary engines of the PI-02, and its claim to fame, were a pair of MacroTechnologies IPFE 80-megawatt ion plasma fusion engines capable of propelling the space interceptor at speeds of 8444.4 miles per second individually or 16,889 miles per second combined.  This gave the interceptor the ability to fly faster than most of its contemporaries and allowed it to be launched at great distance from its carrier, space station, or planetary base.
         The combat engines of the interceptor were a pair of Stellar Dynamics SD-ID-10 10-megawatt high yield ion engines.  Each of these engines produced enough thrust to propel the interceptor at speeds of up to 15,200 miles per hour or 30,400 miles per hour combined.  This pair of engines could be used in either mode of the fighter, but was normally only used in robot mode.
         The primary long-range offensive weaponry of the PI-02 was her combination of Pallas Arms PA-MM105 and Pallas Arms PA-MM205 mini-missile launchers.  The PA-MM105s were 5-shot launchers, while the PA-MM205 were 20-shot launcher racks.  These launchers were usually used in unison and their missiles fired in volleys of various numbers depending on the size and count of the enemies the pilot faced.  These missile launchers carried a combined total of 400 mini-missiles, enough for two full volleys of 200 from all the launchers.
         The medium-range weapons of the PI-02 were a pair of Saturn Arms SA-RFE-05 rapid-fire EMPAC guns mounted on the forearms of the Raven in battle robot mode or on either side of the cockpit of the interceptor in fighter mode.  This pair of electromagnetic particle accelerator cannons was rapid fire and could inflict devastating damage to other mecha and spacecraft.  Pilots of the PI-02 normally employed these cannons against other fighters during dogfights and against spacecraft in strafing attacks.
         The close-quarters weapon of the PI-02 was its Titan Technologies TT-GP903AC triple-barrel 90-millimeter gunpod unit.  This autocannon gunpod was originally intended to be the main weapon system of the space fighter, but by the time of the inception of the PI-02, the range of battle robot weaponry was already beginning to increase with the introduction of beam weaponry.  Although the TT-GP903A had a range on only 12.5 miles, it was still a very formidable weapon against other battle robots and up close against enemy spacecraft.  This gunpod was used in place of a proximal weapon for the interceptor whose mission it was believed would not require a battle robot-scale melee weapon.
         The weapon system originally intended for use as a proximal weapon was a pair of Iapetus Arms IA-PC-01 PHELAC guns mounted in the head of the machine in battle robot mode.  This deadly duo was more useful as an anti-missile defense weapon than a melee armament.  However, some pilots learned to employ the head PHELACs as a means of keeping an enemy mecha from closing in to use whatever handheld weaponry it had, which made the pair of phased energy laser cannons very desirable to have.
         The defense systems of the interceptor consisted of two Pallas Arms PA-AM282 28-shot missile launchers that fired 2-pound anti-missile bomblets.  These bomblets were a moderately effective defense against enemy missile weapons.  The PI-02 had a pair of Macrotechnologies IF-30 30-megawatt ion field omnidirectional generators mounted on the trailing edge of the wings of the Protean interceptor. These I-Field generators could each cover only one arc of the craft at a time allowing two arcs to be covered simultaneously, or both generators could be used to cover one arc with a dual layer of protection.  These I-Field generators were effective against nearly all types of battle robot-scale energy weaponry and light to medium spacecraft weaponry.
         The last line of defense of the PI-02 was its medium combat shield.  This shield provided excellent protection against autocannon and rail cannon rounds as well as beam weaponry.
         The PI-02 Raven Protean interceptor was built in large quantities despite its high cost for a space fighter.  The Saturn Forces produced 9000 of these fighters per year for fifty years starting in 2077 and ending in 2127 AD.  Most of these interceptors were launched with the colonial fleets that left Saturn at a rate of one per year starting in 2082 AD.

NOTES: This variable space fighter is from the science fiction novel series NEXUS ARCANA.  This work is protected by copyright, and all rights are reserved.  Please DO NOT copy, distribute or use this image without express permission of the creator of this work (Kodai Okuda).  Thank you.

Nexus Arcana Books.

Series 1
The Stygian Conspiracy Trilogy:

Shemyaza Awakens…

Ruins of the Ancients…

Children of Methuselah…
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4-X-S Featured By Owner Jul 21, 2016  Hobbyist Artist
Concepts of the Robotech / Macross are quite useful, more piratical than you think. A Valkyrie is a powerful all encompassing war machine, A jet that need no runway, a tank that fly at will, a spaceship that go anywhere it want. The number of support roles it cut down is just amazing. You have plane that don't have runway, you have air support that turn to street police at a button, large deployment of ground force without transport and its escort. This is an enormous advantage even in science fantasy. Macross was the first robo scifi that provide versatility as a strength, not just fire power as in the old shows. The ability to turn into jet mode also made the vehicle much easier to handle and storage friendly, unlike Gundam and other giant robo, Valkyie in jet mode only need a garage, it is stored conveniently in its responsible state.
Kodai-Okuda Featured By Owner Jul 21, 2016  Professional Digital Artist
This fighter is actually based more on the Zeta-Gundam concept where you have a spacecraft-oriented vehicle like the Gundam, but the added bonus of a space fighter due to its transformation capability.
Actually, Tetsujin 28 and some of the earlier Divine Robot shows (like Grandizer and Mazinger) had transformable robots.  In one episode of Tetsujin 28, there is a submarine that changes into a robot.  In Grandizer, you have the saucer-animals that change from flying saucer to robot.  Doctor Hell had a few transforming Machine Beasts in Mazinger Z as well.  Where Macross was innovative is making a triple-transformation that included a half-jet/half-robot mode (GERWALK).  No other anime had that prior to Macross.  I dislike that concept very much because it essentially would subject the arms, and legs to considerably g-force during flight and would also complicate the transformation sequence (as it does in the models and toys of Macross by Ban Dai) to where it is impractical for a mode that has little use.
Combining the real-world science to my own transforming machines was not easy.  Surprisingly enough, the transforming submarine of Tetsugin 28 is probably the most realistic machine of the lot. :D
4-X-S Featured By Owner Sep 9, 2016  Hobbyist Artist
Zeta Gundam had a neat design. It invented a new mech concept that is very popular these days. I like how it transformed into a ship that is reasonable in term of mechanic. However my favorite transformer robot is the Valkyrie from Marcross, they did a good job turn sleek robot into sleek jet, its very hard to achieve perfection in both mode. Mazinger is borderline fantasy I think, it invented the class of super robot where things can turn the tide with emotional energy, and that deeply reflected in the designs of just about "everything". Its the opposite of utilitarian style where things are meant to be mass produced with very little sense of personality. Everything in the super robot genre from hero to enemy are usually one of the kind, the mech beast are not organized like an army of repeating units, instead every one of them is different, unique. And the hero must face them off one at a time, it used t trouble me why both side don;t just throw everything they got, now I get the metaphysical implication was their true purpose.
Kodai-Okuda Featured By Owner Sep 10, 2016  Professional Digital Artist
Zeta was my inspiration for my variable fighters, as well as the Getter Robo fighters that can transform into three distinct robots.  My inspiration comes from a lot of the old Giant Robot series (both Divine/Super and Military) of the 1970s.
See I view the Macross jets as more fantasy than even Mazinger Z (in robot style, not power source, or capability).  While Mazinger Z is meant to be a fantasy (it is NOT SF in my opinion), Macross is supposed to be somewhat serious (like Gundam).  But the problem for Macross is that the fighters fly like jets in space which is silly.  I know they eventually got space-armor packs (which was a big plus for the show), but the idea that the Variable fighter of Macross can do all that they do with the design being used does not make sense to me.  I realize that Kawamori started to address this shortcoming of the show by introducing new designs that were more specialized (like the VF-4, which was a true aerospace fighter), but many of the designs after the VF-4 don't make sense in their application.  Like why are the VF-11s so numerous in the colony fleets when it is practically a pure atmospheric fighter?  Why aren't there more true space fighters or aerospace fighters like the VF-4 and VF-14?  Also, why have the GERWALK when it is a liability?  I understand that toy-sales play a role here, and that Macross (especially 7) really leans towards Fantasy unlike Gundam UC.  While I do like Macross designs, I am also critical of them and try to stay away from the temptation of creating fighters that look like jets if they're not going to be used as aerospace fighters.
That is why this PI-02 Interceptor looks like a spacecraft, because it is designed to fight in space, not a planet's atmosphere.
The major difference between the Super/Divine Robot shows and the military robot shows are the genre-based storyline.  Super/Divine robots are supernatural and so each mechanical beast has a demon/devil spirit within it.  Some even become sentient and independent (like Minerva in Mazinger Z).  Macross has a little bit of that in it (like with the ProtoDevlins), and the whole stupid "Singing Solution" to every conflict. 
Gundam has a wee bit of it with the Newtype concept.
I also use a combination of those concepts (minus the singing one) in my own SF because it was influenced by these 1970s shows.
4-X-S Featured By Owner Sep 10, 2016  Hobbyist Artist
I forgot to mention I do not consider Macross as SF too, I just enjoy its artistic aspect like all super robot class : )
Kodai-Okuda Featured By Owner Sep 10, 2016  Professional Digital Artist
I agree.
Macross is a beautifully done space opera in terms of its artwork. 
The Studio Nue team did a fantastic job and still do.
Chiletrek Featured By Owner May 8, 2016
 I applaud the engineering capabilities to make a variable fighter, because with so many pieces and anything could go wrong, that is always a total feat :D .

 From a 3d model point of view, I love all the details, shapes and colour you used for this new design you made :) . For some reason I think this one was first designed as a robot and then as a fighter (as opposed to most variable fighters we know), because of hoe the fighter-mode looks like... but maybe I am just crazy :D .
Kodai-Okuda Featured By Owner May 9, 2016  Professional Digital Artist
Hi ChileTrek,

Thank you.
This fighter was based on the YF-12A Interceptor of the United States Air Force and the VF-14 Vampire from Macross.


VF-14 Vampire…

The basic design idea is taken from the Gundam Delta fighter in that this design is robot-centric (as you pointed out) and thus the fighter form is secondary while the battle robot form is primary (it is actually a battle armor due to its size and strength).

The Raven is not intended for prolonged flight in an atmosphere. 
While it can fly in an Earth like environment, it's speed and maneuverability is greatly hampered.
This interceptor's main environment of operation is space or on planetoids, and moons that have either no atmosphere or a very thin one (like Ceres). 
Chiletrek Featured By Owner May 9, 2016
 Those two are very nice fighters, I am liking the YF-12A and I have seen pics of that one before :) . I bet most people will remember the VF-14 Vampire for the modified ones used by the Varauta (sp?) armies in Macross7, rather than it's appearance in one of the videogames (can't recall the name right now).

 Yay, so I am not that crazy :) . I suppose the fighter mode is just a quick means of transportation from A to B, but the use of the robot mode would be indeed the real objective.

 I can see, due to it's shapes, that it would not fare as well in a thick atmosphere, but I still think it would help in a pinch, specially if the pilot needs to go in or go out of a combat zone in a hurry.
Kodai-Okuda Featured By Owner May 9, 2016  Professional Digital Artist
Hi Chiltrek,

I like them both, and the VF-14 Vampire is based on the YF-12A/SR-71. 

The fighter mode is actually a space fighter/bomber mode, so it incorporates all the features that a space fighter/bomber would have.  This is why the missile launchers on the left forearm is covered by the combat shield (all four can still fire via the shield's hydraulic arms [not shown in the pic] that flip the shield out of the way in a clam-shell fashion).   The shoulder mounted 20-shot launchers are clam-shell style so they can be used in either mode, and the other 5-shot launchers can also be used in either mode.  However, the mode where the missiles were intended to be used was the space fighter/bomber mode.  The gunpod and shield were intended for use in robot mode more so than the space fighter/bomber.

Since the original PB-02 design was meant for space warfare against assault shuttles, space boats, corvettes, and escorts; the design did not lend itself well to thick atmospheres due to the fact that the mission of the fighter/bomber didn't call for it.

The Neo-Hebrews of Saturn do have atmospheric combat fighters, they are the next two that I am doing.

One is a high-performance defense fighter based on the Japan Defense Forces real world 5th generation jet-fighter (the Mitsubishi F-3) and it will have the designation of PA-03 Protean Aerospace fighter.

Mitsubishi F-3:…

The other fighter is an orbital "dive-bomber/fighter" that is primarily a space-marine fighter called the PF-04U CosmoCorsair. 
It is based on the World War II fighter/bomber F-04U Corsair of the US Navy.…
Chiletrek Featured By Owner May 9, 2016
 Those are nice features you have mentioned, the way that they are available by clamshell-like doors is useful as they could protect the weapons and ammo from unnecessary dangers (like pesky meteoroids).

 Yeah, There is not always the need for a jack-of-all-trades style of fighters, specially when most of the fight for these guys would not be on Earth to begin with.

 Atmospheric combat fighters? yeah, and since they are in Saturn, then they do have Titan to make tests in ;) .

 THe Mistubishi F-3 looks great! I specially look forward to see what will you come up with ;) .
Kodai-Okuda Featured By Owner May 10, 2016  Professional Digital Artist
Hi Chiletrek,

Thank you.
While I like the idea of the multi-role fighter like in Macross, Star Wars, Yamato, etc.; it is more of a fantasy-machine than a science-based one.  The reason is just how different combat in space is verses combat in an atmosphere.  In space you don't need large wings, or ailerons, or lifters, or tail-fins etc.  All you need are vernier thrusters and the CO2 or other propellant to move in Delta-V.   Whereas in an atmosphere the craft would need the opposite.  So for a space-based alliance power like the Jovian Defense Forces an aerospace fighter is going to be a specialized combat unit for planetary assault only.  It has no use in actual space combat save for maybe a surface-to-orbit defense unit.  
What I'm saying is that my PA-03 Mitsubishi built by Nippon Military Industries at Jupiter and Saturn will not require the high-speed (power hungry) ion engines that the space fighters use, it will also not need energy weapons (that don't work well in an atmosphere anyway due to refraction of the particles via air density). 
My vision of an aerospace fighter also has to have wings like the Gundam-Wing does (not exactly like it, but similar) in order to fly in an atmosphere.
This is why I find Macross so fantastical rather than scientifically based.  The Valkyrie of the first TV series could not reasonbly fly in an atmosphere in robot mode, hence it required GERWALK.  Having a third transformation form makes for an unnecessarily complex mechanism that would in all likelihood cost more to maintain, be more prone to break-down, and be more fragile in combat than a machine that changes into only two modes.
Another consideration is missile payload on the wings.  While my space-fighters can carry armor-upgrade-packs on specific hard-points, an aerospace fighter should be able to carry missiles on its wings, and transform with said missiles without having to fudge anything (like make the missile "disappear" in robot mode a la Macross). 
I do not copy from other sources that have come before, I try to learn from their mistakes and thus create an improved version of the basic idea.

I am currently working on the PA-03.  I've got the nose section, Cockpit, Canopy, chest, and arms done; but they are still naked (no textures).  I should have the wings done today, and get the legs done tomorrow.  This aerospace fighter will have a jet-pack (like the VF-21 or Zeta-Gundam, or any of the old Shogun Warrior robots like Mazinger-Z.)
Chiletrek Featured By Owner May 10, 2016
 Learning from your sources rather than copying is something very nice to do, and that not many would try themselves at all. So that is awesome to read from you :) .

 Since I still don't have a planned sci-fi setting on my own, I am working on known franchises as you know, and I have been tempted to try and make some corrections, but it leads to a kind of crossroads at times: to stay faithful to the franchise? or to make some changes that would make more sense?

 Keep it up! :D .
Kodai-Okuda Featured By Owner May 11, 2016  Professional Digital Artist
Hi Chiletrek,

It is difficult to do the research and develop ones own designs, but it is worth the effort in the end.
So far I've got the wings, legs, chest-sections, nose-cone/torso, and arms done for the PA-03.
I'm adding elements of the Dasalt Mirage 2000, and Eurofighter to it.

Keep working on it, Chiletrek, it will come to you as you research it and formulate what you want in your mind's eye. :)
I would absolutely make variants to franchises to help you stimulate your creativity and thus help build your own world in the future. 

Thank you.
You do the same.
I look forward to seeing your new models. :)
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May 8, 2016
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