MRAeS" Member of Royal Aeronautical Society, United Kingdom. World’s most prestigious society of Aviation Professionals (Since 1866). The Society is the world’s only professional body dedicated to the entire aerospace community. Established in 1866 to further the ‘art, science and engineering for Aeronautics’, the Society has been at the forefront of developments in aerospace ever since. There are approximately 20,000 members in over 100 countries, an international network of 70 branches and in the region of 4,000 young members worldwide.