Autor Thema: What if? ASTA A-31 Mk. 2 'Baza', RAAF, 2007 (Whif/Kitbashing)  (Gelesen 4209 mal)

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Online dizzyfugu

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What if? ASTA A-31 Mk. 2 'Baza', RAAF, 2007 (Whif/Kitbashing)
« am: 06. Juni 2014, 15:15:57 »
Sozusagen brühwarm, gestern fertig geworden. Sieht aus wie eine IFA Pucará, ist aber keine... Auch hier darf man raten, wer die Eltern sind.  ;)

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr


Some background:
The ASTA (Aerospace Technologies of Australia, formerly Government Aircraft Factories) Baza development was started in 1995 when the Royal Australian Air Force was searching for a two-seat training aircraft that would allow the transition from initial training on piston-engined aircraft to jets, and could also be used for weapon training and CAS/reconnaissance duties.

ASTA responded with a low-wing two-turboprop-engined all-metal monoplane with retractable landing gear, capable of operating from unprepared strips when operationally required. The aircraft, internally coded “A-31”, was of conventional, all-metal (mainly duralumin) construction. The unswept cantilever wings have 3° of dihedral and are fitted with slotted trailing-edge flaps.

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr


The A-31 had a tandem cockpit arrangement; the crew of two was seated under the upward opening clamshell canopy on Martin-Baker Mk 6AP6A zero/zero ejection seats and were provided with dual controls.

Armor plating was fitted to protect the crew and engines from hostile ground fire. The aircraft was powered by a pair of Garrett TPE 331 engines, driving sets of three-bladed propellers which were also capable of being used as air brakes.

The A-31 was designed for operations from short, rough airstrips.[The retractable tricycle landing gear, with a single nose wheel and twin main wheels retracting into the engine nacelles, is therefore fitted with low pressure tires to suit operations on rough ground, while the undercarriage legs are tall to give good clearance for underslung weapon loads. The undercarriage, flaps and brakes are operated hydraulically, with no pneumatic systems.

Two JATO rockets can be fitted under the fuselage to allow extra-short take-off.
Fuel is fed from two fuselage tanks of combined capacity of 800 L (180 imp gal; 210 US gal) and two self-sealing tanks of 460 L (100 imp gal; 120 US gal) in the wings.

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr


Fixed armament of the A-31 consisted of two 30mm Aden cannons mounted under the cockpits with 200 rounds each. A total of nine hardpoints were fitted for the carriage of external stores such as bombs, rockets or external fuel tanks, with one of 1,000 kg (2,200 lb) capacity mounted under the fuselage and the remaining two pairs of 500 kg (1,100 lb) capacity beneath the wing roots and wings inside of the engine nacelles, and two more pairs of hardpoints outside of the engines for another 500 kg and 227 kg, respectively. Total external weapons load was limited to 6,800 lb (3,085 kg) of weapons, though.
Onboard armaments were aimed by a simple reflector sight, since no all weather/night capabilities were called for – even though provisions were made that external sensors could be carried (e. g. a TISEO or a PAVE Spike pod).

Severe competition arose through the BAe Hawk, though: the Royal Australian Air Force ordered 33 Hawk 127 Lead-in Fighters (LIFs) in June 1997, 12 of which were produced in the UK and 21 in Australia – and this procurement severely hampered the A-31’s progress. The initial plan to build 66 aircraft for domestic use, with prospects for export, e. g. to Sri Lanka, Indonesia or Turkey, was cut down to a mere 32 aircraft which were to be used in conjunction with the Australian Army in the FAC role and against mobile ground targets.

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr


This extended role required an upgrade with additional avionics, an optional forward looking infrared (FLIR) sensor and a laser ranger in an extended nose section, which lead to the Mk. II configuration - effectively, only five machines were produced as Mk.I types, and they were updated to Mk. II configuration even before delivery to the RAAF in August 1999.

Since then, the ASTA A-31 has been used in concunction with RAAF's Pilatus PC-9 and BAe Hawk Mk. 127 trainers. Beyond educational duties the type is also employed for Fleet support to Navy operations and for close air support to Army operations.


1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr

The 'Baza' (christened by a small sized bird of prey found in the forests of South Asia and Southeast Asia) has even seen serious military duty and already fired in anger: since August 2007, a detachment of No. 114 Mobile Control and Reporting Unit RAAF has been on active service at Kandahar Airfield in southern Afghanistan, and a constant detachment of six A-31's from RAAF 76 Suqadron has been assigned to armed reconnaissance and protection of approximately 75 personnel deployed with the AN/TPS-77 radar, assigned the responsibility to co-ordinate coalition air operations.



General characteristics
    Crew: 2
    Length (incl. Pitot): 14.69 m (48 ft 1 ½ in)
    Wingspan: 14.97 m (49 ft)
    Height: 3, 75 m (12 ft 3 in)
    Wing area: 30.30 m2 (326.1 sq ft)
    Aspect ratio: 6.9:1
    Airfoil: NACA 642A215 at root, NACA641 at tip
    Empty weight: 4,020 kg (8,863 lb)
    Max takeoff weight: 6,800 kg (14,991 lb)
    Internal fuel capacity: 1,280 L (280 imp gal; 340 US gal)
   
Powerplant:
    2 × Garrett TPE 331-11U-601G turboprop engines, 820 kW (1.100 hp) each

Performance
    Maximum speed: 515 km/h (311 mph; 270 kn) at 4.570 m (15.000 ft)
    Cruising speed: 430 km/h (267 mph; 232 kn) at 2.500 m (8.200 ft)
    Stall speed: 143 km/h (89 mph; 77 kn) (flaps and undercarriage down)
    Never exceed speed: 750 km/h (466 mph; 405 kn)
    Range:1.611 km (1.000 mi; 868 nmi), clean and internal fuel only
    Ferry range: 3,710 km (2,305 mi; 2,003 nmi) max internal and external fuel
    Service ceiling: 10,000 m (32,808 ft)
    g limits: +6/-3 g
    Rate of climb: 6.5 m/s (1.276 ft/min)

Armament
   2× 30 mm ADEN cannons in the lower nose
   Up to 6,800 lb (3,085 kg) of weapons on nine external hardpoints



1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr

1:72 ASTA A-31 Mk. 2 'Baza', aircraft A31-06 of 79 Squadron, Royal Australian Air Force (RAAF); Williamtown AB, Australia, late 2007 (Whif/kitbashing) by dizzyfugu, on Flickr

« Letzte Änderung: 16. Juni 2017, 10:58:57 von dizzyfugu »

Offline LikkleLion

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Re:ASTA A-31 Mk. 2 'Baza', RAAF, 2007 (Whif/Kitbashing)
« Antwort #1 am: 06. Juni 2014, 15:42:34 »
Das Cockpit, oder wenigstens die Haube davon sieht nach BAE HAWK aus, der übergang zu "Schnauze" hat ja schon recht hohen Wiedererkennungswert ^^ Bei dem Rest muss ich passen ^^

Interessanter umbau von Jet auf 2-motorige Propellermaschine! :)

Offline Karotte

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Re:ASTA A-31 Mk. 2 'Baza', RAAF, 2007 (Whif/Kitbashing)
« Antwort #2 am: 06. Juni 2014, 15:53:56 »
Also ich rate nicht. Würde eh nix werden... sieht aber irgendwie helikoptermäßig aus...

Ansonsten: Schönes Ding geworden!  :thumbup:
Bernd

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Online dizzyfugu

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Re:ASTA A-31 Mk. 2 'Baza', RAAF, 2007 (Whif/Kitbashing)
« Antwort #3 am: 06. Juni 2014, 16:01:42 »
Das Cockpit, oder wenigstens die Haube davon sieht nach BAE HAWK aus, der übergang zu "Schnauze" hat ja schon recht hohen Wiedererkennungswert ^^ Bei dem Rest muss ich passen ^^

Interessanter umbau von Jet auf 2-motorige Propellermaschine! :)

Das stimmt, war aber auch nicht sooo schwer. ;) Ist inspiriert durch ein ähnliches projekt auf whatifmodelers.com, das unter dem Titel "COIN aircraft from a Hawk" lief/läuft. Der Kollege bastelt an einem sehr futuristischen Entenflügler, ich fand die Idee als solche aber charmant und habe mal meine Interpretation nachgeschoben - ist sehr viel konservativer ausgefallen, die Pucará war/ist da enge Benchmark, aber das Ergebnis überzeugt durchaus. War auch eine gute Entschuldigung, um endlich einmal ein SIOP-Schema (das ursprünglich von USAF-Bombern wie die späten B-52 und die FB-111 getragen wurde) umzusetzen - so sind nämlich australische C-130 lackiert, und das sieht durchaus chic aus! Daher ist das Modell dann auch in Australien "gelandet", alles sehr pragmatisch.

Bei Heck und Flügeln darf aber noch geraten werden!  :police:

Offline Gortona

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Re:ASTA A-31 Mk. 2 'Baza', RAAF, 2007 (Whif/Kitbashing)
« Antwort #4 am: 08. Juni 2014, 17:40:40 »
Kann es sein, dass das Heck von einem Heli kommt?

Online dizzyfugu

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Re:ASTA A-31 Mk. 2 'Baza', RAAF, 2007 (Whif/Kitbashing)
« Antwort #5 am: 08. Juni 2014, 18:49:42 »
Ah, ein Kandidat! Aber leider Null Punkte - da ist gar nichts Helikopterisches verwurstet.  ;)