A supercruising aircraft is able to maintain supersonic speeds in level flight without the use of afterburners. Advantages Afterburners, which most military aircraft use to travel at supersonic speeds, are very inefficient compared to conventional jet engine operation due to the low pressures typically found in the exhaust section. Therefore, in general, an aircraft which can supercruise has greater endurance at supersonic speeds than one which cannot. Furthermore, without a requirement to carry… (More on Supercruise)