The Akaflieg München Mü-27 is a two-seat research aircraft intended to explore the performance characteristics of slotted Fowler flaps when used on a high-performance Sailplane. The Mü-27 is a large glider. The empennage and fuselage are constructed of glassfibre re-inforced plastic with conticell foam sandwich cores throughout. The wings have aluminium alloy spars and webs.