Major milestone: Cryogenic engine for Gaganyaan missions now human-rated, says ISRO
Bengaluru (PTI): ISRO has accomplished a major milestone in the human rating of its CE20 cryogenic engine that powers the cryogenic stage of the human-rated LVM3 launch vehicle for Gaganyaan human spaceflight missions, with the completion of the final round of ground qualification tests.
"ISRO's CE20 cryogenic engine is now human-rated for Gaganyaan missions," the space agency said on 'X" on Wednesday.
Rigorous testing demonstrates the engine's mettle, it said, adding the CE20 engine identified for the first uncrewed flight LVM3 G1 also went through acceptance tests.
The February 13 final test was the seventh of a series of vacuum ignition tests carried out at the High Altitude Test Facility at ISRO Propulsion Complex, Mahendragiri, to simulate flight conditions, it said.
The ground qualification tests for the human rating of the CE20 engine involved life demonstration tests, endurance tests and performance assessment under nominal operating conditions as well as off-nominal conditions with respect to thrust, mixture ratio and propellant tank pressure, it said.
All the ground qualification tests of the CE20 engine for the Gaganyaan programme have been successfully completed, ISRO said.
In order to qualify the CE20 engine for human rating standards, four engines have undergone 39 hot firing tests under different operating conditions for a cumulative duration of 8,810 seconds against the minimum human rating qualification standard requirement of 6,350 seconds, according to ISRO.
ISRO has also successfully completed the acceptance tests of the flight engine identified for the first unmanned Gaganyaan (G1) mission tentatively scheduled for second quarter of 2024.
This engine will power the upper stage of the human-rated LVM3 vehicle and has a thrust capability of 19 to 22 tonnes with a specific impulse of 442.5 seconds, it was noted.
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Rupee falls 32 paise to all-time low of 95.20 against US dollar
Mumbai, Apr 30 (PTI): The rupee depreciated 32 paise to an all-time low of 95.20 against the US dollar in early trade on Thursday, weighed down by elevated Brent crude oil prices, hovering around USD 122 per barrel, and strong American currency.
Forex traders said the USD/INR pair may see further downside, as rising crude oil prices are likely to sharply impact India's import costs, while concerns over potential wider conflict in West Asia are fuelling investor anxiety.
Meanwhile, the US dollar added to gains after the US FED Reserve kept rates unchanged. Safe-haven demand was also boosted by another diplomatic setback between Washington and Tehran.
At the interbank foreign exchange market, the rupee opened at 95.01 against the US dollar, then lost some ground and touched an all-time low of 95.20 against the US dollar in initial trade, registering a fall of 32 paise over its previous close.
On Wednesday, the rupee depreciated 20 paise to close at an all-time low of 94.88 against the US dollar.
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"The main effect on the rupee has been from the rising oil prices, which touched USD 120 per barrel and looked headed for further upside as the US continues with its blockade of Iranian ports, while Iran does not allow any ship/tanker to pass through the Strait of Hormuz," said Anil Kumar Bhansali, Head of Treasury and Executive Director Finrex Treasury Advisors LLP.
Meanwhile, the dollar index, which gauges the greenback's strength against a basket of six currencies, was trading 0.01 per cent higher at 98.96.
Brent crude, the global oil benchmark, was trading higher by 3.16 per cent at USD 121.76 per barrel in futures trade.
On the domestic equity market front, Sensex tumbled 821.79 points to 76,674.57 in early trade, while the Nifty dived 287.3 points to 23,890.35.
Foreign Institutional Investors offloaded equities worth Rs 2,468.42 crore on Wednesday, according to exchange data.
"FPIs continue with their sale of Indian Equities and debt (the yield touched 7 per cent on Wednesday) and are also dollar buyers consistently," Bhansali added.
