Dynamometer for a test stand for an aircraft turbomachine

A test stand for an engine with a rotating shaft, said test stand comprising:

• a zone for receiving an engine to be tested:
• and
• a dynamometer intended to be linked to the engine to be tested, wherein the dynamometer includes a rotating electric machine, the rotating electric machine comprises:
• a stator;
• and
• a rotor intended to be driven by the engine's rotating shaft, the rotor comprising a circular row of resultant magnetic poles of which the polarities form an alternation of opposed magnetic poles, each resultant pole comprising a pair of permanent magnets, each magnet comprising two opposed faces and two opposed poles (N, S), each pole located on one of the opposed faces of the magnet, wherein:
• in each resultant pole the magnets are disposed so as to have faces having poles (N, S) of identical polarities oriented radially outwardly and facing towards one another, the combination of the poles determining the polarity of the resultant pole;
• and
• in each resultant pole the outwardly oriented faces of magnets of identical polarities form, therebetween, an angle β between 90° and 110°.

A motor vehicle, said vehicle comprising:

• an electric motor, the electric motor comprising:
• a rotating electric machine configured to propel the vehicle, the rotating electric machine comprising:
• a stator;
• and
• a rotor comprising a circular row of resultant magnetic poles of which the polarities form an alternation of opposed magnetic poles, each resultant pole comprising a pair of permanent magnets, each magnet comprising two opposed faces and two opposed poles (N, S) each pole located on one of the opposed faces of the magnet, wherein:
• in each resultant pole the magnets are disposed so as to have faces having poles (N, S) of identical polarities oriented radially outwardly and facing towards one another, the combination of the poles determining the polarity of the resultant pole;
• and
• in each resultant pole the outwardly oriented faces of magnets of identical polarities form, therebetween, an angle β between 90° and 110°.