ASH 25E

The ASH 25E is a high‑performance two‑seat self‑launching glider produced by Alexander Schleicher GmbH & Co., one of the world’s oldest sailplane manufacturers. Introduced in 2004 as the motor‑driven evolution of the successful ASH 25 prototype, the “E” version incorporated a compact, retractable Rotax 535 E3E two‑stroke engine that delivers 37 kW (50 hp) for independent take‑off, eliminating the need for a tow plane. Structurally, the aircraft retains the ASH 25’s 25‑meter wingspan, built from carbon‑fiber composites and equipped with winglets that improve glide ratio to an impressive 53:1. Advanced avionics, a digital flight‑data system, and a variable‑geometry flap system give pilots precise control across a broad speed envelope.

Historically, the ASH 25E marked a shift toward self‑sufficient soaring, expanding operational flexibility for clubs and competition pilots alike. Its sleek aerodynamics and reliable powerplant have made it a benchmark in the Open‑Class segment, influencing subsequent self‑launching designs from other manufacturers. The glider’s blend of performance, convenience, and modern materials underscores Alexander Schleicher’s ongoing impact on high‑performance sailplane development and the broader evolution of powered‑assisted flight.