ISRO successfully commences testing of semi-cryogenic engine
Bengaluru (PTI): The Indian Space Research Organisation has sucessfully commenced testing of its semi-cryogenic engines that would power future launch vehicles.
The very first integrated test on an intermediate configuration of the 2000 kN (Kilonewton)
semi-cryogenic engine carried out at the newly-commissioned Semicryogenic Integrated Engine & Stage Test facility at ISRO Propulsion Complex (IPRC) at Mahendragiri in Tamil Nadu on Wednesday was successful, the Bengaluru-headquartered national space agency said.
The test is a step towards developing a 2000 kN thrust engine, which works on Liquid Oxygen (LOX)-Kerosene propellant combination, for future launch vehicles, an ISRO statement said.
The intermediate configuration, designated as Power Head Test Article (PHTA), comprises all the engine systems except the thrust chamber.
It was the first of a series of tests planned to validate the design of the propellant feed system, including the low-pressure and high-pressure turbo-pumps, the gas generator, and control components.
The Liquid Propulsion Systems Centre (LPSC) of ISRO has undertaken the design & development of a semi-cryogenic engine with 2000 kN thrust with Indian industry participation, and it will power the booster stages of future launch vehicles.
Wednesday's test is a major milestone before integrating the complete engine and its qualification, ISRO said.
"This test demonstrated the complex chill-down operations spanning about 15 hours duration that was conducted successfully, meeting all the required conditions for engine start. After the chill down of the LOX circuit, the feed circuit of kerosene was filled, and LOX was admitted into the gas generator by opening the injection valve. Successful performance of the test article helps derive the sequence of operations for further tests," it said.
The new facility at IPRC with a state-of-the-art Programmable Logic Controllers-based control system and data acquisition system, is capable of testing semi-cryogenic engines up to 2600 kN thrust and will support the subsequent testing and qualification of the fully integrated semi-cryogenic engine and stage, ISRO said.
This test, the space agency said, has demonstrated the successful performance of the test facility and PHTA in the first attempt itself.
According to ISRO, the Semi Cryogenic Propulsion System Project envisages the design and development of a 2000 kN semi-cryogenic engine and 'SC120 stage' that will enable the development of a heavy-lift capability for future Indian space transportation systems.
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NATO, others turn down US call for help in Hormuz: Trump
Washington (PTI): President Donald Trump on Tuesday said NATO and most of US' other allies have rejected his calls to help secure the Strait of Hormuz as the war with Iran entered the third week.
In a social media post, Trump asserted that Iran’s military has been “decimated” and he no longer felt the need for assistance from NATO countries or anyone else.
Last week, Trump had sought help from European nations and others who depend on oil supplies transiting from the Hormuz Strait to safeguard the critical waterway.
“The United States has been informed by most of our NATO “Allies” that they don’t want to get involved with our Military Operation against the Terrorist Regime of Iran, in the Middle East, this, despite the fact that almost every Country strongly agreed with what we are doing, and that Iran cannot, in any way, shape, or form, be allowed to have a Nuclear Weapon,” the US President said in a post on Truth Social.
Iran's attacks on Gulf nations and its grip on the Strait of Hormuz, through which a fifth of the world's oil is transported, have sparked increasing concerns of a global energy crisis and are unnerving the world economy.
“I am not surprised by their action, however, because I always considered NATO, where we spend Hundreds of Billions of Dollars per year protecting these same Countries, to be a one-way street — We will protect them, but they will do nothing for us, in particular, in a time of need,” Trump said.
He said Australia, Japan and South Korea too have turned down his call for help.
“Fortunately, we have decimated Iran’s Military – Their Navy is gone, their Air Force is gone, their Anti-Aircraft and Radar is gone and perhaps, most importantly, their Leaders, at virtually every level, are gone, never to threaten us, our Middle Eastern Allies, or the World, again,” Trump said.
He said that given the scale of recent military successes, the US no longer "need" or desires assistance from NATO countries, adding that it never relied on such support in the first place.
Speaking as President of the United States, the "most powerful" country in the world, "we do not need" help from anyone, Trump said.
The West Asia conflict began on February 28 when the US-Israeli combine conducted airstrikes on Iran.
The Strait of Hormuz, the narrow waterway that connects the Persian Gulf to the open ocean, has effectively been shut following the US and Israel attack on Iran and Tehran's sweeping retaliation.
However, Iranian Foreign Minister Abbas Araghchi had said that from Tehran's "perspective", the strait is "open". "It is only closed to Iran's enemies, to those who carried out unjust aggression against our country and to their allies.”
Earlier in the day, a second Indian-flagged LPG tanker, Nanda Devi, reached the country after safely sailing from the war-hit Strait of Hormuz. On Monday, the first ship, Shivalik, reached Mundra port in Gujarat.
As of now, 22 Indian vessels remain on the west side and two on the east side of the strait.
Indian authorities are in constant touch with all the relevant stakeholders in the region to secure the safe passage of the remaining ships, officials said.
