SM-27 MACHETE - COunter-INsurgency (COIN) military aircraft

Dutch-Lady

MACHETE is a single engine Close Air Support (CAS), COunter-INsurgency (COIN) and Advanced Trainer (AT) military aircraft

The SM-27S/T MACHETE is a single engine, turboprop aircraft which will be produced in two variants: The SM-27S and SM-27T. The SM-27S is a single seat, high performance light attack and COunter INsurgency (COIN) platform. The SM-27S is designed specifically for Close Air Support (CAS), and in addition to COIN, can satisfy a host of air missions including Light Attack (LA), Forward Air Control (FAC) and Armed Reconnaissance (AR). The SM-27T is a two place tandem weapon system which can not only satisfy the COIN, CAS, FAC and AR role, but also serve as an Advanced Trainer (AT).

Power for the SM-27S/T is provided by a 3,000 SHP class free turbine engine powerplant driving a contra-rotating propeller. Powerplant airflow is supplied by laterally mounted, bifurcated fuselage inlets. A three surface arrangement consisting of a high aspect ratio wing, low aspect ratio canard foreplanes and an all-moving horizontal tail is provided. Twin vertical stabilizers provide directional stability and yaw control.

A one piece bubble canopy and pressurized cockpit with zero-zero crew-member escape capability is provided. Flight controls are of manually actuated, aerodynamic force-feedback type with yaw dampening. Tricycle landing gear consisting of a forward retracting oleo-pneumatic nose strut and inboard wing/fuselage retracting oleopneumatic main gear is employed. A comprehensive integrated avionics suite, including Electronic Warfare/Electronic Counter Measures (EW/ECM) is featured. Stores and ordinance is carried on one fuselage and six wing hardpoints. Typical fixed internal armament includes a single port mounted 30mm cannon.

PowerPlant

The SM-27S/T is powered by one Pratt & Whitney Canada PW127G free turbine propulsion engine developing 2,920 SHP at maximum take-off with a shaft output of 1,200 RPM. Basic engine TBO is 6,000 hours. Self-start capability and electric power control with mechanical back-up is provided. PW127G mass flow is provided via two semi-flush mounted, bifurcated fuselage air inlets equipped with EESS deicing. Engine exhaust is ducted afterward and out through a 173 sq in annular exhaust pipe blended into the aircraft cowling to permit a net thrust increase.

The PW127G is orientated in a pusher configuration, mounted to the aircraft via Titanium engine mounts with the engine bay segregated from the fuselage by a Titanium firewall. The engine itself is enclosed in a clamshell armored cowling consisting of SPECTRA /polyimide and molecularly pure Chromium. Engine bay fire suppression is provided by an integrated KIDDIE detection and suppression system.

The PW127G drives two contra-rotating, six blade, 108 in diameter reversible-pitch, constant speed propfan blades of Scimitar form. Totalling twelve pusher blades, each blade is fitted with EESS for deicing.



The aircraft fuel system is of OBIGGS pressurized type, composed of five rigid self-sealing fuel tanks and one feeder tank. Four of the fuel tanks are located within the fuselage, while the remaining two tanks are located within the port and starboard wing respectively. The maximum useful internal fuel load for the SM-27S/T is 2,600 lbs, equivalent to approximately 388 gallons of JP-8 (at 6.7 lbs/gal) or 400 gallons of JP-4 (at 6.5 lbs/gal). SM-27S/T fuel tanks are sized for 400 usable gallons of JP-4, resulting in a total capacity of 426.7 gallons, including the volume necessary to accommodate self-sealing cells.

Fuel tanks are fitted with tear-resistant, self-sealing bladders lined with open cell reticulated foam. A single point refueling interface is located on the starboard fuselage, while gravity refueling may be accomplished through three filler locations including one on each wing and a single fuselage point. A probe-and drogue in-flight refueling system may be installed on the right forward fuselage as a customer, cost added option. All fuel lines are of Titanium construction, are of absolute minimum length and routed within fuel tanks to improve survivability whenever possible. Fuel tanks feature internal cross-feed capability with redundant feed flow. Fuel is initially consumed from the wing tanks to enhance survivability, with all fuel delivered to a self-sealing fuselage feeder tank prior to powerplant receipt. Closed cell foam is incorporated throughout all dry bays neighboring tanks.

Armament & Warload

SM-27S/T armament includes fixed internal and expendable, external carried weapons.

SM-27S/T fixed internal armament includes the carriage of one 30mm cannon within an streamlined, port fuselage fairing. 30mm cannon ammunition is fed through a link-less feed system supplied by and contained within a fuselage armored ammunition drum. Ammunition is loaded/serviced through a ventral fuselage loading hatch. The cannon provides anti-armor/anti-aircraft capability.

The standard SM-27S/T cannon is the single barrel Oerlikon-Burle KCA 30mm. The cannon is provided with 250 rounds and offers a rate of fire of 1,350 rounds per minute at a muzzle velocity of 3,379 ft/sec.

Ammunition types include AP, HEI, SAPHEI and TP and the KCA can deliver a total of 22.5 strikes/sec resulting in an impact mass of 0.6 slugs/sec. In the SM-27S, the cannon may be provided with over 625 rounds of additional ammunition contained within an expanded ammunition drum located aft of the forward cockpit.

A variety of alternate 30mm cannons may be fitted within the port fuselage cannon fairing. These cannons include the General Dynamics GAU-13/A 30mm. Furthermore, a variety of cannons and machine guns may be carried within the nose/radome of the MACHETE provided the aircraft is not fitted with optional radar/sensor systems. Carriage of machine guns and cannons within the MACHETE nose may significantly alter the standard avionics configuration due to volume constraints associated with weapon and ammunition drum packaging. Overall, the MACHETE offers a flexible weapons platform providing a variety of options.

Up to 5,250 lbs of expendable, external stores and ordinance are carried on a total of seven external hardpoints consisting of six wing mounted and one fuselage centerline mounted pylons equipped with NATO standard 14-inch and 28-inch lug suspension.

Of the seven hardpoints, three are rated to 1,000 lbs and four are rated to 2,500 lbs maximum external carriage capacity at a +7.5 g load factor. Four of the external wing hardpoints are plumbed for external fuel tanks.

The MACHETE is designed for air-to-ground missions, employing ordinance including the AGM-65, GBU-32, CBU-97, CBU-59, BLU-107 and additional stores. Air-to-Air capability is provided through the carriage of AIM-9 and similar passive homing/IR AAMs. The MACHETE is capable of LANTIRN, LITENING and ECM pod carriage and employs a MIL-STD-1760 Weapon Interface Data Bus. Weapons release is conducted through a control column gun trigger switch and weapon release button for air-to-air/air-to-ground.

http://www.stavatti.com/machete/m_homepage.html

IceMallet

Buatan negara mana ni?..Tak wujud turbulance ker pada area antara propeller dan 2 ekor(betoi ker) a/c tu?

Canaletto

Kalau tengok dalam web origin dari Canada dan masih berbentuk konsep aircraft lagi. Ala-Star Wars gitu but very radikal design. Boleh dikatakan 4th generation turboprop selepas Wright Brothers, WW1 dan WW2.

HangPC2

Originally posted by Canaletto at 11-9-2006 12:51 PM
Kalau tengok dalam web origin dari Canada dan masih berbentuk konsep aircraft lagi. Ala-Star Wars gitu but very radikal design. Boleh dikatakan 4th generation turboprop selepas Wright Brothers, WW1 ...

tengok macam sukhoi lah...

mmc

Originally posted by IceMallet at 11-9-2006 12:44 PM
Buatan negara mana ni?..Tak wujud turbulance ker pada area antara propeller dan 2 ekor(betoi ker) a/c tu?

well konsep propeller tractor (yang biasa skrg) dan pusher(macam yang ni) dah dicuba dari awal lagi....praktikal atau tidak utk design tak tauler

taiaha

U had to open a thread huh? Okay, concept's not new:

http://www.canit.se/~griffon/aviation/text/21saab.htm

alphawolf

Goes even older than that actually...IIRC, Wright Flyer I has pusher configuration

mmc

interesting references for pusher propeller concepts

pusher1

modenpusher

but please note that in real world, this concept is workable as you may not realise it but the predator UAV is actually driven by pusher propellers..



[ Last edited by  mmc at 12-9-2006 11:05 AM ]

Dutch-Lady

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Chile

taiaha

Hey, is this company for real or what?!

Originally posted by IceMallet at 11-9-2006 12:44 PM
Buatan negara mana ni?..Tak wujud turbulance ker pada area antara propeller dan 2 ekor(betoi ker) a/c tu?

empennage... tapi aku tak nampak gambar laaa... pc aku problem kot...

BeachBoys

aku suka diernye design......mmg palotak nak perang diorang ni...