MISSILE PROPELLER

• Main Authors: TAKAHASHI KENICHI, NAMBA MASAFUMI
• Format: Patent
• Language: English; Japanese
• Published: 26.09.2022
• Subjects: AEROPLANES; AIRCRAFT; AVIATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COSMONAUTICS; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; HELICOPTERS; PERFORMING OPERATIONS; TRANSPORTING

To reduce a contra-rotating propeller type missile propeller in size and weight.SOLUTION: There is provided a missile propeller having: a stator 3 obtained by winding three-phase coils 33 around a plurality of cores 32 arranged apart from each other in a circumferential direction; a first rotor 4 arranged on an inner side in a radial direction of the stator 3 via an air gap; a second rotor 5 arranged on an outer side in the radial direction of the stator 3 via an air gap; a first propeller 1 connected to the first rotor 4; and a second propeller 2 connected to the second rotor 5. The sum of the number of pole pairs of the first rotor 4 and the number of pole pairs of the second rotor 5 is identical to the number of the cores 32. The number of pole pairs produced by the three-phase coils 33 is identical to the number of pole pairs of the first rotor 4 or the number of pole pairs of the second rotor 5. The first rotor 4 and the second rotor 5 rotate to each other in a reverse direction.SELECTED DRAWING: Figure 1 【課題】二重反転プロペラ型の飛翔体用推進器を小型軽量化する。【解決手段】周方向に離間して配置された複数のコア３２に三相コイル３３が巻回されたステータ３と、ステータ３の径方向内側にエアギャップを介して配置された第１ロータ４と、ステータ３の径方向外側にエアギャップを介して配置された第２ロータ５と、第１ロータ４に連結する第１プロペラ１と、第２ロータ５に連結する第２プロペラ２と、を備え、第１ロータ４の極対数と第２ロータ５の極対数との和がコア３２の数と同一であって、三相コイル３３の作る極対数は、第１ロータ４の極対数又は第２ロータ５の極対数と同一であって、第１ロータ４及び第２ロータ５は互いに逆方向へ回転する。【選択図】図１