29-Nov-2021: Indian Bio-Jet Fuel Technology Receives Formal Military Certification
CSIR-IIP Dehradun’s home-grown technology to produce bio-jet fuel has been formally approved for use on military aircraft of the Indian Air Force (IAF). The provisional clearance (PC) certificate was handed over by Shri R. Kamalakannan, Group Director(AT&FOL), Centre for Military Airworthiness and Certification (CEMILAC) to Mr. Saleem Akhtar Farooqui, Principal Scientist from CSIR-IIP in the presence of Group Captain Asheesh Shrivastava and Wing Commander A Sachan of the IAF and Mr. R Shanumgavel of CEMILAC. This certification represents India’s growing confidence in aviation biofuel sector and another step towards ‘Atmanirbhar Bharat’.
The technology, developed by the Indian Institute of Petroleum (CSIR-IIP), a constituent laboratory of the Council of Scientific and Industrial Research, has undergone evaluation tests and trials over the last three years. The testing of airborne items is a complex and meticulous process involving intricate checks while ensuring the highest levels of flight safety. International aviation standards define the scope of these rigorous assessments. Fuel being the lifeline of aircraft requires thorough analysis before being filled into manned flying machines. The certification received by the lab today is an acknowledgment of the satisfactory results obtained from various ground and inflight tests performed on the indigenous bio-jet fuel by various test agencies supported by the IAF.
Earlier on 26 Jan 19, an AN-32 aircraft, filled with blended bio-jet fuel, had flown over Raj Path at New Delhi during the Republic Day celebrations. Thereafter, the performance and reliability of the Indian technology were also tested when the Russian military aircraft safely landed and took off from Leh airport on 30 Jan 20 at high altitudes under severe winter conditions. The fuel was also used on a civil, commercial demonstration flight operated by SpiceJet on 27 Aug 18 from Dehradun to Delhi. These test flights with green fuel underscored the capabilities and commitment of Indian scientists and airmanship of IAF to serve a national cause.
Today’s approval by CEMILAC is a culmination of many years of intensive research and active support of many agencies, including the test facilities of Indian Oil Corporation (IOCL) Panipat Refinery and Hindustan Aeronautics Ltd. (HAL). This clearance will enable Indian armed forces to use bio-jet fuel produced using indigenous technology across all its operational aircraft. This will also enable early commercialization of the technology and its mass production. Indian bio-jet fuel can be produced from used cooking oil, tree-borne oils, short gestation oilseed crops grown off-season by farmers, and waste extracts from edible oil processing units. It will reduce air pollution by virtue of its ultralow sulphur content compared with conventional jet fuel and contribute to India’s Net-Zero greenhouse gas emissions targets. It will also enhance the livelihoods of farmers and tribals engaged in producing, collecting, and extracting non-edible oils.
31-Jan-2020: IAF’S AN-32 Lands at LEH with Indigenous Bio-Jet Fuel
On 31 Jan 2020, IAF achieved another milestone, when an AN-32 aircraft of the Indian Air Force, powered with a 10% blend of Indian bio-jet fuel took-off from Kushok Bakula Rimpochee Airport, Leh. This is the first time that both engines of the aircraft were powered by the bio-jet indigenous fuel. The aircraft was flight tested and its performance was validated at Chandigarh Air Base prior to undertaking the operational flight to Leh.
Leh at an altitude of 10,682 ft above mean sea level, is amongst one of world’s highest and most difficult operational airfield, it is prone to extreme weather conditions. Even during clear weather conditions, landing and taking-off an aircraft at Leh, is challenging due to reduced power output of the aircraft engines in the rarefied atmosphere, turbulent wind conditions and proximity of mountainous terrain. Evaluating the performance of bio-jet fuel under these conditions is important from operational perspectives. It validates the capability of the aero-engine to operate smoothly with bio-jet fuel at the extremities of the operational envelope. The tests were conducted by a team comprising of test pilots from the Aircraft and Systems Testing Establishment, Bengaluru and pilots from the operational squadrons.
This successful test flight also demonstrates IAF’s capabilities to absorb newer technology, while sponsoring indigenization. The technology to produce this fuel was developed by CSIR-IIP in 2013, but could not be tested and certified for commercial use due to lack of concurrent aviation test facilities in the country. In 2018, the IAF sponsored this project and channelized its human and material resources for the complete range of fuel testing.
Bio-jet fuel is produced from non-edible ‘Tree Borne Oils’, grown and procured from the tribal areas of Chhattisgarh state. IAF’s efforts would assist in reducing carbon footprint and India’s dependence on crude imports.