NationStates Jolt Archive


ASA-43 Hammerhead Fighter

Animarnia
11-09-2005, 03:33
Hammerhead Fighter MKI

http://www.animeonscifi.co.uk/images/hammerhead.jpg

Brief Summary:
The Hammerhead light fighter is the direct successor to the Startracker, taking all of its strengths and non of its weaknesses the Hammerhead delivers rapid response where its needed to quickly destroy enemies it encounters. However the Hammerhead is best suited for dogfights with other fighters rather than combat with capital vessels. The ASA-43 Hammerhead Fighter is truly a magnificent weapon system capable for both Atmospheric and Space flight

Aerodynamics
The Hammerhead got his name because of its resemblance to a hammerhead shark. Apart from the main wings, the hammerhead has two smaller wings (or fins) on both sides of the fuselage and in front of the cockpit. This makes the front of the ASA-43 look like the head of a hammerhead shark.

Both main wings and smaller wings point forward (which is the opposite of what you see when looking at more conventional wings). The foremost set of small wings are also known as "canard"-wings. This configuration is known to offer better aerodynamic efficiency, making higher manoeuvrability possible. Furthermore, a canard wing usually stalls earlier than the main wing, causing the craft to pitch down, which in turn causes an increase in speed when flying in a gravitational field. This increase in speed immediately counteracts the stall.

Also note that the leading edge of both main wings and canard are almost perpendicular to the fuselage, whereas the trailing edges still make up for the triangular shape of the wings, albeit that this triangle is reversed front-to-back, as compared to traditional wing designs. "Canard" is French term and means "duck".

Earlier canard configurations were found on the Israeli CFIR C7 and F-21A CFIR, Sukhoi Su-37 Flanker, Mikoyan Mi-1.42 (although this project was cancelled in 1997), SAAB JA-37 Vigen (and its recon complement SAAB SF-37 Vigen), SAAB Gripen, Dassault Rafale, Eurofighter 2000 Typhoon

Engines:
He3 fuelled scramjet (supersonic combusting ramjet). Enables the ASA-43 to fly from inside an atmospheric envelope to a Trans-orbital phase in the (almost complete) vacuum of space without having to rely on huge containers with liquid propellant.

The ASA-43 has a maximum exo-atmospheric Acceloration of 45 miles per second squared (45mp/s^2), and an atmospheric maximum speed of Mach 3.4.The ASA-43 has an atmospheric flight stall speed of 157 miles per hour. And a takeoff speed around 132 miles per hour.

Ramjet:
When air enters a jet engine its speed decreases and its pressure increases called the ram compression effect. At high speeds this process can be fairly effective, and can compress enough oxygen to efficiently burn the fuel for the engine all on its own. Typically the speed needed to make this process work effectively is above 600mph, and doesn't outperform traditional designs until supersonic.

Ramjets are built to utilise this compression effect through a careful inlet design. Beyond that the engine is largely nothing more than a well-designed tube. A ramjet thus contains no (major) moving parts and is particularly useful in cases where you need small and simple engine for high-speed use. On the downside they need to be flying at high speed to start with, making them less than useful for general tasks. As you might expect they have found use almost exclusively in missiles, where they are boosted to operating speeds by a rocket motor, or by being attached to another aircraft (typically a fighter). Today small turbofans or rockets have generally replaced ramjets.

Scramjet:
When the air inside a ramjet exceeds the speed of sound (meaning an aircraft speed of around Mach 5+) combustion fails to occur properly. This is overcome in a scramjet (supersonic combusting ramjet): the inlet is much wider (typically the entire underside of the craft) so the compression is less and the air remains at supersonic speeds. But conventional fuels are unusable at these speeds, so reactive chemicals or gases are used and the design of the jet is much more complex. Like a ramjet the scramjet must already be moving extremely fast before it will start working, but theoretically, speeds in excess of Mach 20 are possible.

Role
The ASA-43 is a multi-role and even a "swing role" spacecraft. This means it can carry out various roles equally well.
Whatever the role, the ASA-43 is capable of both Beyond-Visual-Range (BVR) attacks and Close-In-Combat (CIC) attacks.

]Primary roles:

- Air/Space superiority: obtained by the ASA-43's BVR and CIC capabilities. The goal is to obtain and maintain superiority by defending and securing sectors in (air) space. Air superiority will ensure and facilitate ground-based Ops.

- Fleet Air/Space Defence

- Air/Space combat manoeuvring, i.e. dog fighting (A/SCM), isn't a specific role. It's one of the capabilities of all fighters. The ASA-43 is well suited for SCM but requires a skilled pilot to get the most out of it.

- Combat Space Patrol (CSP)

- Recon

- Armed escort

Secondary roles:

- Interception of enemy fighters

- Anti Surface Forces Air Ops (ASFAO) (CAS in particular, possibly AI)

- Close Air Support (CAS): the ASA-43 can operate for longer periods of time. In order to execute CAS missions successfully, it has to be equipped with both air-to-air and air-to-surface weapons configurations (esp. the latter!)

- Battlefield Air Interdiction (BAI): requires enough resources and capabilities in order to cover long distances, day or night. Air Interdiction is also a secondary role. On top of that, the ASA-43 is well equipped to carry out missions for Interdiction of enemy LOC (logistics support lines)


Special Features
Modularity
The ASA-43 has various modular components, easily replaced in case of malfunction.

Detachable cockpit
The cockpits is detachable (not just the canopy), Enabling it to act as an escape pod should the craft be damaged irreparable this cockpit can be ejected for pilot safety

Armaments
- 1 x frontal forward facing, gimbal-mounted Vulcan Electro-magnetic Rail gun (capable of covering a 50° kill-zone) which fires 20mm depleted Urainium-238 round

- 1 x dual-barrel aft-mounted Rail Gun Turret, capable of automatic target seeking and tracking which fires 15mm depleted Urainium-238 round. This Turret is capable of covering the rear and front of the plane should it be needed in a dogfight.

6 x hard points, capable of carrying:
Missiles:
- SRAAM AIM-130 radar guided missile "Ripper" Missiles - The Ripper is aptly named, since that is exactly what they do, fighters and light ships such as bombers and light destroyers are especially vulnerable to these fast attack missiles

- AIM-139 Heat Seeking "Firestorm" Missiles – These are an Upgrade of the Ripper, with better guidance and a higher payload, however to accommodate this extra firepower they trade off speed and mobility

Bombs/Torpedoes:
- UGB-500 "Sun fury" Torpedo - Slow, big and dumb, the Sun Fury torpedoes are a high yield propelled weapon for use against battleships and carriers that cannot out manoeuvre the weapon, there lack of speed and guidance makes them useless against faster ships or fighters.

- UGB-1000 "Sun Slayer" Torpedo - Slow, Bigger and dumb; the Sun Slayer is the next generation of Torpedo, capable of delivering a powerful blow to a capital ship, the Sun Slayer like its predecessor has no guidance system relying on a "Point and shoot" system but delivers twice the payload.

- GAB-200lb-2000lb "Rabbit hole" Unguided Ground Attack Bomb - What it says on the tin, a Ground attack bomb of varying yield as required.

Pods: for carrying special electronic Equipment or instrument modules as required

Optronics and Electronics

- LIDAR: (Light Detection And Ranging) A long range, configurable, light-emission based piece of equipment. Can track and engage up to 100 independent targets. Being basically an active light source, LIDAR can be blocked and distorted. These characteristics make LIDAR vulnerable, as jamming a LIDAR is possible.

- HUD: Advanced Head-Up Display. Mainly used for displaying flight parameters, navigational information and overall combat intelligence as well as remaining ammunition.

- ODP: (Optical Disk Playback) Used for mission data recordings. Can be used for post-mission evaluation (mission debrief).

Controls
The ASA-43 utilises a series of chemical thrusters that serve to stabilise and control the pitch, yaw, roll, bank, and heading of the aircraft. These thrusters are at key locations on the nose, wingtips, centre, and rear of the aircraft, and are controlled by the ASA-43's "fly-by-wire" system. When the pilot inputs a control movement on the flight stick (or rudder as is in some earlier versions of the ASA-43), the computer calculates what the pilot's intent is, and delivers the commands for the thrusters to fire.

When the ASA-43 encounters an atmospheric envelope, the pilot switches the computer to Outer atmospheric mode, and several control surfaces become available, after the initial breaking and cooling of the craft upon its re-entry. The computer acts in the same way as before, except now it commands hydraulic motors to move the control surfaces. In theory, the ASA-43 could operate in an atmospheric envelope without the functionality of the control surfaces, but this has not tested, nor is it recommend practice, save emergency situations.

Technical Specifications
Type: Endo/Exo Trans-atmospheric attack jet
Length: 11.5 m
Height: 1.7 m
Wingspan: 12.5 m
Max Speed: Atmospheric (Mach 3.5) Space (650Mp/s ^2)
Max Range: N/A
Crew: 1

http://www.animeonscifi.co.uk/images/ham_scam.jpg

Price: $90 Million Per Unit.
Animarnia
14-09-2005, 02:54
Bump up my Post ^_^
SkyCapt
14-09-2005, 02:56
OOC: I guess this is PMT/FT?
The Serene Death
14-09-2005, 03:05
OOC: Awesomeness, loved Space: Above and Beyond. I'd probably buy a few hundred or thousand depending on the price.
Animarnia
14-09-2005, 03:20
OOC: Awesomeness, loved Space: Above and Beyond. I'd probably buy a few hundred or thousand depending on the price.

^^ Thanks, yup loved Space above and beyond too and I noticed a lack of SAAB stuff about so thought I'd create one.

SkyCapt: Yup PMT/FT :)
Clan Smoke Jaguar
14-09-2005, 04:07
OOC: Just a few things to note (and yes, I loved SAAB too):

70mm rail guns are a bit big, all things considered. Those are huge weapons for such a small aircraft, especially for multiple ones to be employed, and would certainly bigger than that turret appears to be. And a dual-barrel 70mm weapon is just ludicrous. 10-15mm rail guns will do, 20mm tops. In space, a single penetrating hit is all it takes, so you don't need to be overpowered.
For the record: though I never saw it actually mentioned officially, the gun looks like maybe a 15 or 20mm (no more than 7-10mm if multibarrel, as a few sources have suggested), judging from the official pics. The side-mounted, manned guns on the ISSAPC are 10mm Gauss units, if that helps in the referrence. I have found only a single source that lists the guns as 70mm weapons, and that makes it rather suspect.

Also, it is physically impossible to do Mach 10 in space. Since Mach numbers are based on the speed of sound at a given altitude, one cannot achieve Mach anything in a vacuum, where sound cannot travel. Additionally, there is no such thing as a top speed in space. Since there's no friction to slow things down, as long as you have engine power, you can keep increasing speed. Cutting engines only stops one from accelerating, allowing a constant speed to be maintained. "Speed" in space is usually (by those who know what they're talking about) measured by acceleration, and the closest thing to a "maximum" speed there would be is a maximum tactical speed, beyond which it is difficult to maneuver the aircraft effectively.
Animarnia
14-09-2005, 04:34
OOC: Just a few things to note (and yes, I loved SAAB too):

70mm rail guns are a bit big, all things considered. Those are huge weapons for such a small aircraft, especially for multiple ones to be employed, and would certainly bigger than that turret appears to be. And a dual-barrel 70mm weapon is just ludicrous. 10-15mm rail guns will do, 20mm tops. In space, a single penetrating hit is all it takes, so you don't need to be overpowered.
For the record: though I never saw it actually mentioned officially, the gun looks like maybe a 15 or 20mm (no more than 7-10mm if multibarrel, as a few sources have suggested), judging from the official pics. The side-mounted, manned guns on the ISSAPC are 10mm Gauss units, if that helps in the referrence. I have found only a single source that lists the guns as 70mm weapons, and that makes it rather suspect.

Also, it is physically impossible to do Mach 10 in space. Since Mach numbers are based on the speed of sound at a given altitude, one cannot achieve Mach anything in a vacuum, where sound cannot travel. Additionally, there is no such thing as a top speed in space. Since there's no friction to slow things down, as long as you have engine power, you can keep increasing speed. Cutting engines only stops one from accelerating, allowing a constant speed to be maintained. "Speed" in space is usually (by those who know what they're talking about) measured by acceleration, and the closest thing to a "maximum" speed there would be is a maximum tactical speed, beyond which it is difficult to maneuver the aircraft effectively.


Cheers for that, very very handy to know, thanks, I'll get working on the revisions tomorow. hmm just as note though with acceloration would it be fair to mesure it in Miles per second, there has to be a TOP speed for the aircraft or at least as far as engine output and Agility is concerned or I would think so but I'm no expert, your further input would be much appricated
Clan Smoke Jaguar
14-09-2005, 06:21
Well, the basics for acceleration formula can be found here (http://www.gmhsscience.com/problems/acceleration.htm)
Basically, miles per second is a velocity, miles per second squared would be an acceleration.

Regarding maximum speed. For an exoatmospheric aircraft with a limited fuel source, the maximum practical speed would be what can be achieved while still having enough fuel to bring it back to a complete stop (not necessarily half the fuel, but if that helps, it can be thought of that way). The maximum practical speed drops further if you require maneuvering, such as with a fighter. Such aircraft are likely not going to use more than 20-30% of their fuel accelerating. The rest is needed for maneuvering (remember, the only way to maneuver in space is with thrusters!) and deceleration, and there should be a reserve as well.
There might also be a "combat speed" decided by some paper pusher who determines what is acceptable maneuvering capability. This is based on the rate and radius of turns, as well as stopping distance and tolerance of the pilot and/or airframe. But remember that such things are merely imaginary lines, and, with the possible exception of tolerance issues, pilots will cross them.
Animarnia
14-09-2005, 23:15
Bump and Edits made, more comments?
Animarnia
15-09-2005, 23:56
bump
Animarnia
17-09-2005, 23:47
bump comments...bump
Clan Smoke Jaguar
18-09-2005, 03:05
OOC: Looks fine, except for one minor problem I caught going over it again:

I'm not entirely sure what Mp/s^2 is there (the only MP/s I know of pertains to computers). Off hand, if it's meters per second squared, either the "p" or the "/" should be removed, because those are just two different ways of denoting the same thing, and doubling them up might cause some confusion.
Khallosopia II
18-09-2005, 03:13
Wow, that sounds like an awsome fighter!

I represent the Empire of Khallosopia II and we are currently in need of a decent new military weapons platform. I'm wondering whether you'd be interested in selling a quantity of the aircraft to me. I assurre you we in the Empire of Khallosopia II will find this enhanced military hardware extremely useful in our bid to rule, erm, help to pacify the world. You will be paid for your services.

Think about it.
Animarnia
19-09-2005, 01:54
OOC: Looks fine, except for one minor problem I caught going over it again:

I'm not entirely sure what Mp/s^2 is there (the only MP/s I know of pertains to computers). Off hand, if it's meters per second squared, either the "p" or the "/" should be removed, because those are just two different ways of denoting the same thing, and doubling them up might cause some confusion.

Ah sorry for the confusion Miles per/Second ^2, thats just how I write it, I do the same with kp/h.
Solarian Space
19-09-2005, 02:05
im not familiar with SAAB or anything, but heck, ill add my 2 cents:

im fairly sure that there IS a top speed, even in space. im no expert on kinetics, but i thought there was a "terminal velocity" or something like that...been a while since that science class, im not sure.

at any rate, you could never go past light speed, i know that. thats just realitivity.

oh, yeah, thats a nice model. that gmax, or is that an official pic?
Clan Smoke Jaguar
19-09-2005, 02:56
The theoretical maximum speed, for a vessel such as this, is the maximum it can achieve from exhausting its entire fuel supply while accelerating. Once the fuel's gone, its speed will remain constant, until something stops it.
However, as I said, you realistically have to cap it to save fuel for maneuvering, and slowing down. Beyond that, the only thing that really has much effect is the structural tolerances of the aircraft, and the tolerances of the pilot, for maneuvering at a given speed. There may be a point where attempting a certain maneuver may damage the aircraft (air friction isn't the only force acting on aircraft, after all), or cause the pilot to black out. But this is a complex problem that has to factor desired agility and specific maneuvers, and can change depending on what those are.
Isselmere
19-09-2005, 03:02
Maximum speed in space is dependent on the limited friction from particles (space isn't a complete vaccuum), the maximum thrust potential of the engines, and the mass of the vehicle itself. The energy required to push the vehicle at higher and higher speeds, particularly when such speeds become relativistic, is immense and as one approaches 1c (the speed of light), such energy becomes infinite, hence science fiction's use of warp drives and the like.
Animarnia
19-09-2005, 07:20
Ok so now we have all the technical stuff sorted out, whats a fair price of this baby? Comments from respected shopfront owners on this would be appriciated (I'm terrible at pricing but think somwhere in the order or 70million per unit is quite fair but more or less you tell me?)
SkyCapt
19-09-2005, 14:22
Probably over $90 Million, what with all the features and weapons on it.
Animarnia
28-09-2005, 03:43
OOC: This is now up for sale :) at $90 USD Each.
SkyCapt
28-09-2005, 04:06
OOC: $90.00?! O.o
Animarnia
28-09-2005, 04:12
$90 Million Rather ^^;; *blush*