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Iranian government sources, the F-313 Qaher was designed and is indigenously produced in Iran by the Aviation Industries Organization (AIO), a division of the Ministry of Defense, and IRIAF. The project manager is Hassan Parvaneh.
The aircraft design is a canard configuration. It is described as a stealth fighter built with advanced materials, a very low radar signature and with low-altitude operations capability. It was also claimed that the Qaher can take off and land on short runways and has "easy maintenance". Qaher has a payload capacity of carrying two 2000 pound bombs, or greater number of smaller smart guided missiles, or at least 6 air-to-air missiles in the category of the PL-12.
It features a downward wingtip device which Flightglobal.com noted vaguely resembles the Boeing Bird of Prey prototype, but with a more faceted design similar to the 1970s-era Lockheed Have Blue that was developed into the now retired F-117 Nighthawk. Flight Global also said, "given the apparent small size of the aircraft and its single engine design, the Qaher 313 could be powered by reverse engineered variants of the General Electric J85 turbojet that Iran is known to have in its possession." Iran has General Electric J85s as well as a dozen other jet engines as a result of old Northrop F-5s and other American aircraft in its inventory from pre-1979 as well as newer engines from Russia and China. Iran also builds various turbo fan engines like the Toloue-4 and Toloue-5 for its UAVs. Iran claims they have designed the aircraft using CATIA three-dimensional interactive design software and tested it using simulation software including Gambit numerical grid generation software, fluent flow analysis and simulation software, CFD models and that they have additionally tested the aerodynamics using small sized jet and propeller flying models.
Two days after the unveiling ceremony, Mehr News Agency published the top ten features of the fighter jet project.
The aircraft was reportedly designed with extra stability and so does not need a fly-by-wire (FBW) system.
A prototype version of the Qaher-313 was portrayed to have test-flown at some point before the presentation. According to the head of the design team, two sub-sized models have been created and tested. One of the models uses a propeller engine while the other uses a small micro jet engine. The models were shown in a video clip (along with descriptions by the head of the design team) the same day. The "blurry video published by the Iranians purporting to show the Qaher 313 in flight seems to show not a manned fighter jet but a small radio-operated drone " which agrees with what the designers said about the videos at the Qaher-313 introduction ceremony.
On 10 February 2013, the Iranian Minister of Defense said the claims made by the foreign media about the project are inaccurate and that the engine used by the design had been successfully tested. He also confirmed that the aircraft had not yet been flown, but that taxi and flight tests will occur in the near future.
Qaher-313 - Wikipedia, the free encyclopedia
The top 10 technical characteristics of the F-313 fighter jet and some of the related data on its features and appearance:
1- Using Two inlets and inlet ducts make up the air induction system to deliver air to the engine. Due to an indirect angle of the engine to the air inlets, the radar reflectivity is reduced, and it makes angled design of inlet ducts to the surface to get radar energy wave, just like in F35.
2- The hot exhaust gas mixes with cold air through the inlet ducts, and gets cooler before it gets out of the exhaust system, to reduce heat effects on the surface of the aircraft.
3- Use of radar-absorbent materials in the body, to absorb wave energy and reduce radar reflection, for greater stealth effect of Qaher F-313 fighter.
4- Considering the estimated length and height of the aircraft is less than 16 and 4 meter, the two compartments with payload capacity of carrying two 2000 pound bombs, or greater number of smaller smart guided missiles, or at least 6 air-to-air missiles in the category of R-17 or PL-12.
5- Relatively large vertical tail surface has created favorable directional stability and with canted vertical tails create aerodynamic benefits as well specific appropriate lateral maneuvering capabilities.
6- The very large canopy gives a 360 degree visibility, which is essential for low altitude fly-by flights, especially helps ground mission attacks, and it is also very useful in close dog-fights.
7- The angled wings is perfect example of indigenous design for aircrafts, which gives a side profile like M, and similar to a W profile, is the best form to use in aircrafts.
8- Single-cycle landing gear is another proof that F-313 is a light weight aircraft, with minimum flying weight of 12 to 14 ton, and maximum flying weight of 20 ton.
9- There are 8 analog displays in the cockpit, which shows Multi-Function Display (MFD) technology has more room to improve in F-313, Qaher fighter jet.
10- Considering F-313 normal steering lever, the control systems, with the wing movable surfaces, rudder, and vertical stabilizer are hydraulics, and not fly-by-wire (FBW) system, since many todays aircraft use side-steering lever control.
The advance computer designing software (CATIA) were used for designing F-313, and aerodynamic analysis methods such as computational fluid dynamics (CFD) also were used, with the help of numerical grid generation software (GAMBIT), flow analysis software (FLUENT) and other design computation software, which shows a complete scientific work in various areas of indigenous scientific and technology was used for F-313.
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