Supersonic flight without afterburners is referred to as supercruise. Supercruise requirements called for prolonged supersonic flight without the use of afterburners. Low-bypass turbofans can reach supersonic speeds, though normally only when fitted with afterburners. The Typhoon is capable of supersonic cruise without using afterburners (referred to as supercruise). Boom wants to use moderate bypass turbofans without afterburners, unlike Concorde's Rolls-Royce/Snecma Olympus. The Salt Shooter Hovertank was upgradeable with different weapons, thrusters, afterburners, and other upgrades. The Lightning's optimum climb profile required the use of afterburners during takeoff. These engines each produced thrust with afterburners. It was used to start each engine and to ignite the afterburners. Further design refinements included using two Westinghouse J34 engines with afterburners. Engines intended for extended use with afterburners often have variable nozzles and other details. Afterburners are often considered another type of combustor. On take-off aircraft accelerate toward and up the ski-jump using their afterburners. Specific Fuel Consumption (SFC) of the engines is 1.12 in cruise and 2.45 with afterburners. Fuel consumption was greatly increased by use of the afterburners, however, reducing the range.