Iran's new space launch vehicle "Simorgh IRILV"
 

Norbert Brügge, Germany


Update:
08.09.2010


TEHRAN, 2009, Oct. 13 --
Iran announces that a new telecommunications satellite is ready for launch. Iran's Minister of Communications and Information Technology, Reza Taqhipour, said the satellite has successfully completed pre-launch tests and is now ready for take off.

TEHRAN, 2009, Dec. 23 --
The Islamic Republic of Iran plans to launch satellites into orbit early in the new year, its defense minister told the semi-official Fars news agency. Iran will to launch a new generation of the country's national satellites called
Tolou. The first satellite will be unveiled during the "Ten Days" of an annual event that takes place between 1-11 February, marking the victory of the Islamic revolution.

THERAN, 2010, Jan. 20 -- Iran will unveil three new satellites in February, a report said.
ISNA news agency quoted Communications Minister Reza Taghipour as saying that one of the three home-built communications satellites is still under construction.
Taghipour named the three satellites as Tolou, Mesbah-2 and Ya Mahdi (Navide Elmo Sannat), but did not elaborate on exactly when they would be launched.
Ya Mahdi, Taghipour said as quoted by ISNA, was an "experimental satellite" and the launch would be for testing camera and telecommunications equipment.
Mesbah-2, which is under construction, "is a low-orbit telecommunication satellite for storing and sending messages," he said.
Iran's defence minister Ahmad Vahidi said that Tolou is a "reconnaissance satellite," ISNA reported.
Vahidi had previously said Tolou would be unveiled during celebrations in early February marking the 31st anniversary of the Islamic revolution.
He said last month that Tolou was designed by Sa Iran, also known as Iran Electronics Industries, an affiliate company of the defence ministry.

THERAN, 2010, Jan. 29 -- Iranian defense minister Ahmad Vahidi announced that the country plans to unveil a home-made engine for satellite carrier rockets within the next few days.
"Tolou and Mesbah satellites as well as
Simorgh satellite carrier engine will be unveiled in the ceremonies from February 1-11, celebrating the victory of the Islamic Revolution back in 1979," Vahidi added.

THERAN, 2010, Febr. 01 --
Iran will unveil five space projects at ceremonies to celebrate the victory of the Islamic Revolution of 1979, Fars news agency said.
On the third day of the festivities, Iranian authorities will hold a presentation of the Tolou satellite, the Mesbah-2 and Ya Mahdi research satellites, and the engine for the new
Simorgh booster rocket.
 

THERAN, 2010, Febr. 03 -- State television carried pictures of President Mahmoud Ahmadinejad unveiling the home-built satellite rocket dubbed the "Simorgh".
The milk-bottle shaped rocket, emblazoned in blue with the words "Satellite Carrier Simorgh," is equipped to carry a 100-kilogram satellite 500 kilometres into orbit, the television report said. The launch weight of the rocket is given with 85 tonnes.


                                 
Iran's new space launch vehicle Simorgh IRILV --- The similarity to the North Korean Unha-2 is only apparent


TEHRAN (FARS) --
Iran unveiled a new home-made satellite carrier. The satellite carrier named “Simorgh” utilizes a new generation of liquid-fuel engines to put satellites in orbit. The milk-bottle shaped rocket, emblazoned in blue with the words "Satellite Carrier Simorgh", is equipped to carry a 100-kilogram satellite 500 kilometers into orbit.
"The 27-meter tall multi-stage rocket weighs 85 tons and its liquid fuel propulsion system has a thrust of up to 143 tons. The rocket uses a cluster of four engines each having a thrust of 32 tons plus a control engine (*) with a thrust of 15 tons."
* meant are the second stage engines

TEHRAN (ISNA) - Tehran At a ceremony attended by Iran’s President Mahmoud Ahmadinejad in the country’s National Day of Aerospace Technology Tolou, Mesbah 2 and Ya Mahdi were unveiled. Tolou will be placed in low-earth orbit at about 500 kilometers above the Earth and will be charged by solar cells and secondary batteries. Mesbah 2 is a telecommunication satellite and Ya Mahdi is made by students that sends photos to the Earth.
The new Simorgh satellite carrier could take satellites with 100 kilograms weight at the height of 500 kilometers above the Earth. Also Simorgh satellite carrier engine can put up to 700 kilograms at orbit 1,000 kilometers above the Earth.

TEHRAN, 2010, Aug. 05 -- President Mahmoud Ahmadinejad said Iran is working on a three-stage rocket to carry a satellite 1,000 kilometres into space.
"Last time, we sent a satellite to 250 kilometres... Next year it will be sent to 700 kilometres, and the year after that to 1,000 kilometres," he said.

 


Second stage with shroud

 


Rear of Simorgh IRILV mock-up
Exaust exits are no shown






Future launch site Semnan-II for Simorgh IRILV ?
or only a Simorgh engine test stand

 ---  35.2586 °N   53.9540 °E  ---

 

  Propulsion


For driving the first stage of the Simorgh is used a cluster of four Nodong engines. That is the crucial difference to the North Korean Unha-2. The Unha-2 uses the Chinese YF-2 engines from the DF-3 missile. The proof of this is the arrangement of the exhaust-tubes. The Unha-2 exhaust-tubes like the DF-3 are visible on the side of the rocket. The exhaust tubes of Simorgh are placed on the bottom of the rocket beside the nozzles. The thrust of both engines are similar however.
   

        Simorgh: 1,255 kN (vac)    ------  Nodong engines (4)

 Unha-2:    1,132 kN (vac)    ------  YF-2 engine (4)
 

For the second stage of Simogh be used the same engines as in the Safir IRILV (the application of the Soviet R-27 SLBM technology is recognizable), or new engines. The thrust
 is 147 kN (vac). To achieve these thrust-level are needed four Safir-engines or two new engines - with twice thrust - like the second stage of the Unha-2.
Differences between the Unha-2 and the Simorgh IRILV are the amounts of fuel and the diameters. The first stage of Unha-2 with 2.25 m diameter has more amount of fuel as the Simorgh with 2.00 m diameter. Further, is the fuel in the second stage of Unha-2, with a larger diameter, significantly higher than in the Simorgh. The second stage of Simorgh has ~150 % more fuel as those of Safir IRILV.
The presented Simorgh IRILV has a length of ~ 24 m. The said length of 27 meters is not realistic. It is likely that future rocket has a additional solid-fuel motor of 3 m in length and 2 tons weight.
 

 

Cluster of four Nodong engines



Second stage engines with nozzle extension (Safir IRILV)



Second stage engine without nozzle extension (Safir IRILV)
  

 
Possible technical data

Stage

Engine

Thrust s.l.

Isp s.l.

Thrust vac

Isp vac

Propellant

Burn time

Flow rate

Total Imp

-

-

kN

N*s/kg

kN

N*s/kg

 

tons

s

t/s

MN*s

1

 Nodong (4) 1,135.2 2417 1,255.0 2672 UDMH/AK-27S 51.660 110 0.4696 138.0
2  n.n.n.    (2)     147.0 2844 UDMH/AK-27S 5.942 115 0.0517 16.9
(3)

 FG-28M (?)

        solid ~1.500 112 0.0134 ~3.7



Comparison between Safir and Simorgh second stages

 

 

 


go to: Simorgh main page

 



Safir second stage engine (left) and probably Simorgh new second stage engine (right)