Safir-2 (Simorgh) IRILV



The empty casing of a Simorgh rocket, shown on the museum grounds of the Defense Ministry, is now real. On new photos (Space Technology), numerous details are visible. It is clear now that the Simorgh is significantly different to the  North Korean Unha-2/3. The data on the poster are compatible to the presented vehicle. The first stage is about 1.5 m longer and the tank volume ratio O/F is about 1.4  (Unha-2/3 is 1.6 !). For driving the first stage of the Simorgh will used a cluster of four Nodong engines, arranged like the unrealized Unha-1. The second stage is a longer Safir upper stage with expanded diameter. It will used four combustors of the LRE-4 (4D10V) with two turbopumps. The first stage have four added steering engines (not identical to the Unha-2/3) with own turbopump. But, in this configuration, only with a third  stage the necessary final velocity will be achieved. A third stage can be a solid fuel motor Saman-1.


The integration of a fifth turbopump for the steering engines requires larger gaps between the main engines (unlike the Unha-2/3). It is remarkable that the combustors in the Simorgh are rotated arranged for 45 degrees in comparison to the Unha-2/3.  Due to the increased consumption of fuel by the strong steering engines, the first stage is longer. It imposes itself on the suspicion that the Simorgh rocket in reality is an earlier unrealized version of the North Korean Unha-1 !



The endless story (press statements) and so on

TEHRAN, 2021, Dec. 30 --
Iran has launched a Simorgh SLV. An official spokesman said that for the first time three payloads were placed at the same time at an altitude of 470 km. The final speed achieved is said to be 7350 m/s, which makes a successful mission questionable.

TEHRAN, 2020, Feb. 09 -- Iran space agency official says the rocket was launched on 19:18 (local time) successfully and could reach 541 km altitude. But unfortunately the required speed of 7,400 m/sec was not reached to put the satellite into orbit. The reported final speed of 6,533 m/sec was clearly too low for this.The video transmission abruptly stops at 19:21. The second stage seems to have exploded after 75 seconds of burning time.

TEHRAN, 2020, Jan. 18 --
Jahromi: Zafar 1 & 2 have succesfully passed tests and will be transferred
to the Space Launch Center today to undergo the process of being put into orbit, soon. Jahromi: Zafar-1 satellite will be launched before February 11. Mentions two copies of Zafar exist so that in case of failure the second one can be launched

TEHRAN, 2019, January 15 -- The Simorgh launch on this day was a failure. The Payam satellite did not reach enough speed for put into the orbit because the third stage "Saman-1" not functioned. In my Calculation only a final speed of 6,450 m/sec reached. Although the satellite (connected with Saman-1) is still reaching further altitude, it falls back to earth after losing of its speed (to zero).
The Iranian statement is nebulous: "Calculating the satellite's initial speed and fuel problems was one of the reasons why the satellite did not reach orbit".

TEHRAN, 2017, July 27 --
Iranian semi-official media are reporting that Iran has successfully launched the Simorgh  rocket. The semi-official Fars news agency, reported the launch and said it was successful. The Imam Khomeini Space Centre was officially opened with the test of the Simorgh space launch vehicle", state television said.

  • Shahrabi (Iranian offical) said in an interview: "The launch yesterday, did not put a satellite in orbit".

  • "The project was successful, and we reached our intended goals" Defense Minister Hossein Dehghan said.

  • Iranian President Hassan Rouhani has appriciated the successful test-launch of his country’s new satellite carrier.

Note: The (oxidizer ?) tank of the second stage of Simorgh is approximately 0.5 m longer in compared to the launch vehicle of 2016. But the Simorgh supposedly failed by problems with the "Saman-1" kick stage.

2016, April 21 -- The launch of the Simorgh space launch vehicle two days ago was judged by U.S. intelligence agencies to be (partly) successful but did not reach orbit, said defense officials familiar with reports of the test.
Russian Ministry of Defence has told that suborbital launch of unknown ballistic missile has been occured at 09:33 UTC on April 19th and, according to preliminary data, was successfull. The burned out rocket impacted in the southern part of Iran.Two radars, in Armavir and in Orsk (Russia), have the launch registered.
Comment: Only a test of the Simorgh first stage (?). Probably not (
according new images of this launcher on the pad). Even though it was announced so in 2015 (Aug.). Iran will not comment this launch because is suspected wrongly that the Simorgh is an ICBM. What nonsense is.

TEHRAN, 2016, April 19 -- Today arrived President Rohani in Semnan city !?

TEHRAN, 2016, March 15 -- Head of Iran’s National Space Center Manouchehr Manteqi announced that the country will launch the indigenous “Simorgh” satellite carrier for test in early spring. Manteqi told the Tasnim News Agency that the missile will be launched in three phases: two test launches, one of which will take place in the coming weeks and the other in late summer, and a third launch, which will most probably take place in early 2017.
According to Iran’s Space Agency officials, the first generation of the satellite carrier is capable of carrying communications and sensing satellites as heavy as 100 kg to orbits some 500 km above the earth.

2016, Feb. 18 -- US-Intelligence agencies watching preparations to test a Simorgh space launch vehicle in this month. A large liquid-fueled rocket was observed on the IKSLC launch pad.

TEHRAN, 2016, Feb. 12 --
Defense minister told a few days ago that the rocket (Simorgh) was transferred to the launch pad but the launch was postponed for some reason to a better time.

TEHRAN, 2016,  Feb. 02 --
Secretary of Iran’s Technology Development Manouchehr Manteghi says that within 2 months Simorghs first flight test will occur and also the inaugurations of the first phase of Imam Khomeini space center will be inaugurated. Toloo satellite will be launched, the Simorgh SLV test is successful, in August/September time frame.

TEHRAN, 2016, Jan. 25 --
Iran is due to launch a new satellite in February during ceremonies to mark the 37th victory anniversary of the Islamic Revolution, Minister of Defense Brigadier General Hossein Dehqan was quoted. The Simorgh (launcher) satellite will be put into orbit 500 km away from the earth.

TEHRAN, 2016, Jan. 20 --
Iran will unveil a new satellite carrier in early February and will launch a satellite into the space in next Iranian year (to start on March 20), Vice-President for Science and Technology Sorena Sattari said.
The new satellite launcher will be unveiled on the National Space Day (February 3). Information and specifications of the new satellite carrier will be announced later.

TEHRAN, 2015, Oct. 07
-- An agreement was signed by vice president for science and technology Sorena Sattari and Defense Minister Hossein Dehqn which sets the stage for the designing and manufacturing of Simorgh Satellite-carrier, Imam Khomeini Satellite, and Tolou-1 Satellite.
The Simorgh Satellite-carrier will be operational by the end of next calendar year, Manteqi said, adding that it will be able to carry objects of up to 100 kg of weight to 500 km above the earth surface.


TEHRAN, 2015, Aug. 23 -- Iranian Defence Minister: The space program was slowed because of the budget limits. The only slowing factor has been budget and nothing else. We will start testing different stages of Simorgh this year and it will be able to put 200 kg in higher orbits. ( Note: Only able with an upper stage !). The 1st stage of Simorgh will tested this year. The 2nd stage was previously tested.

TEHRAN, 2014, May 29
-- Iran plans to launch three home-made monitoring satellites into orbit in the next Iranian calendar year (March 2015-March 2016), a senior Iranian aerospace official announced.
"Zafar, Tolou and AUTSat will be sent into space onboard the Simorgh satellite carrier," Deputy Head of Iran Space Agency (ISA) Hamid Fazeli said.
Zafar will be sent into a geostationary orbit (this is nonsense !). Tolou satellite will also carry out remote sensing and topography missions, and will travel in an orbit of 500 kilometers above from the Earth’s equator. AUT Sat is a monitoring and telecommunications satellite, which weighs 100 kilograms.

TEHRAN, 2013, Okt. 28
-- Iran Space Agency (ISA) deputy head Hamid Fazeli said that Iran's home-made satellite carrier Simorgh is under construction and will be launched next year (started on March 21, 2014). He went on to say that Iranian Zafar, Tolou, Autsat and Amirkabir satellites scheduled to be carried by Simorgh.
Simorgh is an Iranian expendable small-capacity orbital carrier rocket, which has a length of 27 metres, and weight of 85 tons.
Its first stage is powered by four main engines, each generating up to 29,000 kilograms (284.4 kN s.l.) of thrust, plus a fifth which will be used for attitude control, which provides an additional 13,600 kilograms (133.4 kN s.l.) of thrust.
Note:  Now (2015)  it is clear that in fact the four steering engines with own turbopump are meant.
Simorgh is capable of putting a 60-kilogram payload into a 500-kilometre low Earth orbit. The engine could be used in future rockets capable of carrying 700-kilogram satellites into 1,000-kilometre orbits.

TEHRAN, 2013, Aug. 20
-- Fars News Agency in Persian reported that satellite carrier Simorgh has been upgraded to a speed of up to 7500 meter per second.
The report added that Simorgh is a "two-stage satellite carrier" and "is capable of carrying satellites having a maximum weight of 100 kilograms". It is also "capable of placing the satellites in 500-kilometer orbit at 55-degree angle." The report added that "the Simorgh satellite carrier can also place satellites weighing hundreds of kilograms in nearer orbits".
The report further said that the new generation of Simorgh satellite carrier, "Sepehr" will be launched in the future. Sepehr is capable of carrying satellites as heavy as 700 kilograms and could place them in 1000-kilometer orbit. According to the report, Simorgh satellite carrier was first launched
*) in 2010.
This must be a translation mistake. In 2010 was presented the first unfinished model.

TEHRAN, 2013, Feb.11
-- The Iranian Ministry of Science, Research and Technology Mahdinejad Nouri approved two major national projects in the fields of research and technology, which include designing and developing two new "engines" for the country’s satellite carrier rockets.
As regards the new rocket engines will participate Sharif, Amirkabir, Tabriz and Mashhad Ferdowsi University in the 5-year project.

TEHRAN, 2012, Dec. 19
-- Iranian Defense Minister Brigadier General Ahmad Vahidi said Wednesday that Iran was to unveil new space achievements soon, the official IRNA news agency reported.
Vahidi told reporters that the unveiling ceremony would take place on Feb. 02, Iran's Space Technology Day. Iran has gained many remarkable achievements in the space technology area, he was quoted as saying.

TEHRAN, 2012, Nov. 12/13 --
Chief Commander of Iran's Revolutionary Guard Corps (IRGC) Mohammad Ali Jafari announced that Iran will launch new satellite to GEO orbits in space by solid-fueled rocket. One year ago, IRGC General Hassan Tehrani got killed as a result of an explosion occured during the rocket test.
Jafari, said that the Islamic republic will test a new (Simorgh) satellite-carrier rocket in the near future. IRGC experts have completed the project of a solid fuel rocket, which can used to send satellites of 100 kg into geostationary orbits 35,786 km above the equator.

Note: The word "rocket" means "solid kick-motor".

TEHRAN, 2012, Aug. 31
-- The Iranian students news agency quoted a spatial expert Rezaei as saying that the Simorgh two-phased satellite carrier which is capable of carrying satellites with 100 kg to 500 km orbit, possesses 4 engines and final tests are implemented on it.
Rezaei stressed Tolou satellite built by Iran's electronic industry affiliated with defense ministry would be launched by Simorgh satellite carrier built by air and space industry of defense ministry.
He added Iran's next locally-made satellite would be Fajr satellite which is to be sent into space in the near future.

TEHRAN, 2012, Aug. 02
-- The director of Iran's aerospace technology development center has announced that the country will complete the building process of the indigenous satellite carrier Simorgh by the end of the current Iranian year (March 20, 2013).
In a press briefing at Amirkabir University of Technology in Tehran, was adding that the manufacturing work on the satellite that will be mounted on Simorgh is also underway.

TEHRAN, 2012, May 02 --
The Islamic Republic plans to send the Fajr satellite into space within a month, Director of Iran Space Agency Hamid Fazeli announced.
Fazeli said that Iran plans to send the satellite into space aboard the upgraded Safir carrier rocket.
Fazeli said that if the manufacture of Simorgh satellite carrier rocket is completed, the satellite Toloo and Zafar will be launched into space by March 20 (2013).

TEHRAN, 2012, March 05
-- Information by  Mehdi Farahi, Director of the Aerospace Industry Organization:
Safir-2A is the first version of Safir-2 with the name of Simorgh. Length of it is 26 m, diameter of it is around 2.5 m and weight of it is around 86 tons. Thrust of is around 143 tons. It can put 100 kg satellites into 500 km altitude orbits.

TEHRAN, 2012, Feb. 14
-- Iran will launch satellites with the Simorgh carrier from a new space port. There would be a new round of space progression in Iran by 2013. The country will launch Toloo and Fajr satellites and will improve its carriers by efforts by experts in this regard.
The Simorgh satellite carrier which is capable of carrying satellites with 100 kg to 500 km orbit, possesses 4 engines and final tests are implemented on it.
The Toloo satellite built by Iran's electronic industry affiliated with defense ministry will launched by Simorgh satellite carrier built by air and space industry of defense ministry. The Simorgh launcher also will be capable to put satellites into GTO orbits. Then thruster of satellite will put satellite into 36,000 km GEO. The satellite carrier Simorgh is built soon.

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.

-- At a ceremony attended by Iran’s President Mahmoud Ahmadinejad in the country’s National Day of Aerospace Technology Toloo, Mesbah -2 and Navid were unveiled. Toloo 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 Navid 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.

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."

 Note: * Now (2015)  it is clear that in fact the four steering engines are meant. For it is a own turbopump present !

TEHRAN, 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.

TEHRAN, 2010, Feb. 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 Toloo satellite, the Mesbah-2 and Navid research satellites, and the engine for the new
Simorgh booster rocket.

TEHRAN, 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.
"Toloo 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.