Exhaust nozzle, aero-engine and aircraft

• Main Authors: SHI TONGCHENG, CHAI XIANGHAI, HOU LIANG, JIN CHANGFEI, WANG SHAOHUI, GONG CONGYANG
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; JET-PROPULSION PLANTS; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; SPRING, WEIGHT, INERTIA OR LIKE MOTORS; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The invention discloses an exhaust nozzle, an aero-engine and an aircraft, the exhaust nozzle comprises a plurality of fragmentation parts, the fragmentation parts enclose to form an exhaust port of the exhaust nozzle, the exhaust nozzle is characterized in that a shape memory alloy net is formed on the outer side of each fragmentation part, the shape memory alloy net comprises shape memory alloy wires, the shape memory alloy wires are arranged on the outer side of each fragmentation part, and the shape memory alloy wires are arranged on the outer side of each fragmentation part. The shape memory alloy net extends in the circumferential direction to cover all the fragment parts, the length of the shape memory alloy net is changed at the phase change temperature so that the fragment parts can be driven, and the size of an exhaust port of the exhaust nozzle can be changed. The shape memory alloy is adopted as an actuating mechanism, and the area of a nozzle of the exhaust nozzle is changed and controlled at dif