Tuesday, August 29, 2006

Compostite-part 1

In The Name Of God


As all know aircrafts must be made by some specific materials. Therefore the knowledge and science of materials and material mechanic is of great importance and consideration. By looking very briefly to the aircraft history you can see how engineers tend to change the materials of various parts of aircrafts or ant air vehicle. There are many factors to choose or make an aircraft materials. Very importance ones are strength, weight, flexibility, low cost and be easy to mass production. So at the first days of aircraft production wood was used. Wood is cheap, very easy to reshape and change, very light and easy to obtain. That was the main reason it was involved in manufacturing many parts of aircraft until the end of WWI. Since aircraft designers tend to make faster, heavier and bigger aircrafts, wood was found very in-effective. Therefore engineers tend to use metallic materials like steel, Aluminium and titanium.
These materials are much heavier and are more expensive than wood. Also they need very complex machinery equipments to make and on top of all these they brought a special knowledge and course of aeronautical and mechanical engineering which is called ‘‘Structure and Stress analysis’’, which is the scientific way of testing and designing materials for use of mechanical purposes.

Tuesday, August 22, 2006

Smiths Aerospace

In The Name Of God

Indeed Smiths Aerospace company is one of the most famous Aero -Technology companies in the world. In 1851 Samuel Smith established his familiy watch and clock company in London city and after him i hte period of 1917 to 1929 Smiths group found itself as fully mechanical engineering company specialy in regard of aircraft which was very new technology on that time. Smiths aerospace company like many of the other worldwide and succesful Aero companies has many other sub division parts which are not related to aerospace technology directly but are indeed very neccessary like Electrical and Mechanical parts.
For more usefull information you can go to its official website which is mounted in my weblog link.

Monday, August 21, 2006

New Iranian Made Weapon

In The Name Of God

It is really good to see Iranian Aeonautic innovation every day!. Doosh which means shoulder in Persian, is another Iranian weapon which made purely by an Iranian engineers in Iran. You can see its related picture below.


Sunday, August 20, 2006

Iranian missile test

In The Name Of God

Well, as you know these days our world is little bit free of killing and violence! i mean no more killing between Hizballah and Israeli Army. To be honest Hizballah has done a great job so far, i mean fighting with 4th strongest classical army in hte world which has best technology in the world (American) and also very professional special forces who are experienced in un-organised wars is very very hard. Now add to it very limited millitary equipments of Hizballah you will understand that how bravely Lebanis had fought. Disigard of all this, i do not think Israeli army used all what they have. I mean they really did not want to fuck up hizballah! yes they did not, no becuase they did not want, but becasue they were not allowed to used what ever they have due of some important political considerations. I do not mean bull shits like human right but indeed, its Arab neibours!!!. just look at what American army have done so far at Fallujah in Iraq and Tora-Bura in Afhanistan. Massive and huge range of distruction in country with size of Lebanon which is very small indeed and has not a long distance from its other neibours will highly cost for Israel and America. That is why you did not see B-52s and oversize Israeli missiles. Israeli army becasue of all that i have mntioned so far had been forced to use its special forces and armours like Mirkavi tanks and artillary power. so they pushed their men in groud of Lebanon and this was what hizballah fancy! means asymmetric war. but after this bloody dirty war Iranian Army decided to do a massive Army show which is called ''Zolfaghar''. They managed to test one of Iranian most modern Short range missiles. For more information click here.

Vs

Friday, August 18, 2006

Me and my freinds!!

In The Name Of God












Sunday, August 13, 2006

Iranian Aircraft

In The Name Of God

Does Iran make Aircraft?

Fortunately, the answer is yes!!

we make an Aircraft. this is right that it is not purely Iranian but for start it was great acheivement. Definately one day in futur you will see Iran-140 as first iranian made aircraft at iranian aerospace musem!

One airline alone, Iran Air, the national airline of Iran, has under way a massive fleet renewal and expansion plan and is expected to expend an estimated $7 Billion on aircraft purchases. In light of such demand, local manufacturers, by capitalizing upon technological incentives offered by international manufacturers to win sales, have been able to formulate production outsourcing and joint partnering ventures. The outcome of these steps have led to the launch of a joint venture for the manufacture of the Antonov 140, a 60-70 seat passenger aircraft.

HESA, the center of excellence in Aeronautics in Iran is responsible for manufacture, co-production, export and managing the marketing, sales and support of IRAN- 140 Aircraft (Original ANTONOV- 140) advanced technology, superior design features, excellent reliability and performance combine to make IRAN-140 the most successful regional prop-jet in the world today and tomorrow. IRAN -140 is a pressurized, twin turbo prop, high wing aircraft, which combines a rapid transit speed (310Kts, 575 Km/h) with outstanding performance in " HOT & HIGH " climates. Its added ability to operate from unprepared airfields makes it an ideal aircraft for any regional network.

IRAN-140 fuselage provides for an excellent passenger/cargo loading capability, which along with high wing, permits ample clearance for ground servicing vehicles. Other features :Exceptional pilot visibility from the cockpit, very good low speed handling, aregged fuselage structure with an economic life of 20000 landings, carefully placed passenger and service doors, plus a range of gross weights to meet operator requirements.

A six bladed swept back advance technology propellers is composed of a metallic spar embedded in a composite sheath. IRAN-140 power plant, with millions of flying is the most reliable engine that integrates the propeller and engine controls into a propulsion system that is ideally suited to the IRAN-140 Aircraft.

The first Hesa-produced Iran-140 was completed in 2001, but company has yet to find a domestic customer for the aircraft, which is being seen with scepticism by Iranian civilian operators.

On 22 December 2002 an Antonov 140 departed Kharkov at 11:23 for a flight to Isfahan, Iran via Trabzon. The passengers, aerospace scientists and executives, were to visit the test flight of the Iran-140, an Antonov 140 built under license in Iran. At 13:45 the flight landed at Trabzon, Turkey for refueling. About one hour later, at 14:51, the plane took off heading for Isfahan. While descending towards Isfahan in an area of poor visibility, the aircraft collided with a mountain. Iran's civil aviation authority announced that a pilot's failure to correctly use a cockpit global positioning system (GPS) caused the crash.

Maritime patrol, including roles such as electronic warfare, anti-ship missile firing and long range missile guidance relay, emphasizes a need for at least 7 hours endurance. An-140 does not have such a capability yet, but some modifications are being planned to enlarge aircraft's fuel tanks, and by adding additional tanks to the outboard wing section. The Iranian Navy has expressed its willingness to operate the An-140 in offensive and patrol roles, equipping it with a 360-deg surface search radar. Other equipment options will include an infrared/ultra-violet line scanner (IR/UVLS), forward looking airborne radar (FLAR), side looking airborne radar (SLAR), laser fluorescent sensor (LFS), microwave radiometer (MWR), forward looking Infra-red (FLIR), magnetic anomaly detector (MAD), electronic support measures/radar warning receiver (ESMRWR), antisurface weapons and a video camera with data annotation.

Antonov An-140 military AEW version will be equipped with a rotodome and a yet to be determined surveillance radar. Iran has an urgent requirement for at least a dozen of such aircraft due to its diverse topography.

Specifications

Aircraft length

22.605 m

Wing span

24.505(25.505) m

Empty aircraft overall height at rest

8.232 m

Landing gear track

3.18 m

Wheel base

8.162 m

Wheels of nose landing gear

0.6 x 0.22 m

Wheels of main landing gear

0.81 x 0.32 m

Uner floor baggage volume

3 m³

Transport compartment length

14.51 m

Rear baggage /carg compartment volume

6.1 m³

Length 22.46 m 73.67 ft
Fuselage Diameter 2.82 m 9.25 ft
Length 11.6 m 38.05 ft
Height 1.9 m 6.23 ft
Width 2.6 m 8.54 ft
Max. Take-off Weight 21,000 ( 21,500 ) kg 46,200 ( 47,300 ) lb
Max. Landing Weight 21,000kg 46,200 lb
Max. zero fuel weight 19,100 ( 19,200 ) kg 42,020 ( 42,240 ) lb
Max. Payload 6,000 kg 13,200 lb
Max. Fuel 4,370 kg 9,614 lb
Take-off Run (1-engine)* 1,350m 4,415 ft
Take-off Distance(1-engine)* 1,750 (1,925) m 5,740 (6,314) ft
Landing Distance* 1,360 m 4,460 ft
Climb,2 engine* 410 m/min 1,345 ft/min
Max. Cruise Speed (18,000 ft)* 533 km/hr 285 KTAS
Range (Cruise Speed)** 2,100 km 1,134 NM

For more information about origin of this aircraft and its manufacturs and company click here.

Friday, August 04, 2006

Iranian F-5 story, Part 2

In The Name Of God

Other indigenous modifications implemented on the Iranian F-5s include installation of wing pylon mounted chaff flare dispensers and replacement of the RF-5A’s film based still image camera with a new high resolution EO video system. In a separate projects Iranian aircraft manufacturing industry (HESA), near Esfahan has so far modified nine retired F-5As to the F-5B Simorgh configuration with help of Pakistani engineers. This modifications which adds a second cockpit, is to fulfil an IRIAF requirement for more fast jet trainers. All the aircraft serve with the training unit based at Shiraz. Other noteworthy F-5 modifications in Iranian service include the integration of the Russian R-60M and Chinese PL-7 heat seeking air-to-air missiles, as well as AGM-65 Maverick missiles. The APQ-159 radar was also tweaked to increase its detection range from 20 miles to 40 miles (32 to 64Km), it’s tracking range from 10 miles to 23 and is tracking performance. Since the mid-1980s the IRIAF has been rebuilding or manufacturing thousands of F-5 parts, including parts for its GE J85 engine. Building on this experience the IRIAF’s Owj industrial complex then started reverse engineering the F-5E’s airframe, which flew in the late 1990s as the Owj Azarakhsh. The Azarakhsh is an F-5E copy, with only minor changes, which are mostly internal. the only external difference is a slight lengthening of the nose to make room for a new radar unit which Iranian and Russian engineers are developing jointly. After building a single prototype, the Owj moved ahead with a more radical endeavour, in the form of replacing the F-‘s original single vertical tail configuration with a twin outward canted vertical tail design to improve performance. The new aircraft named Saegheh is currently under going a slow paced test program. The Owj complex is also reportedly working on the separate new design which includes a major works of the original F-5. There are currently eight squadrons of F5E/Fs based at three facilities, three squadron based TFB.2 at Tabriz; three with TFB.4 at Dezful, Ardestani; a squadron with Omideyeh TFB.5 at there near Ahwaz and a sold unit residing at Babaie TFB.8 near Isfahan. A detachment of RF-5As soldier on at TFB.7, Shiraz, as do a mix of F-5B and F-5B Simorgh which serve the based training unit.

Wednesday, August 02, 2006

Iranian F-5 story, Part 1

In The Name Of God

Iran was the first country to receive the Northrop F-5 Freedom fighter. The initial bath of F-5A/Bs arrives Tehran in February 1965, and the first Imperial Iranian Air Force unit became operational four months later. Eventually, Iran took delivery of 104 F-5As and 23 F-Bs, as well as up to 20 of the RF-5A reconnaissance version. However, form January 1974 the Freedom fighters were replaced by 141 F-5E and 28 F-5F Tiger2s, and during the 1980s, when Iran was at war with Iraq, further F-5A/Es were acquired from Ethiopia and Vietnam.

The F-5 Tiger served as the workhorse of the Islamic republic of Iran Air Force during war with Iraq, especially on close Air support missions, and this active participation cost Iran at least 110 F-5s to enemy and friendly fire, mostly leading to death of their pilots. However the 17 air to air kills attributed to the tiger include a mig-25PD already damaged by an F-14, two Su-20s and six helicopters.

After the end of war Iran started rebuilding many damaged aircraft. the IRIF also completed as effort to equip a few of its F-5E/Fs with detachable in-flight refuelling equipment, for training purposes.

the above information is obtained by www.airforcesmonthly.com