Draft:Tsybin LL-3

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Last edited by Florpoid (talk | contribs) 0 seconds ago. (Update)

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The Tsybin LL-3 (Experimental glider № 3, flying laboratory 3) (Russian: ЛЛ-3, экспериментальный планер № 3, Ц-1 летная лаборатория 3), was a Soviet experimental rocket-powered glider developed in the late 1940s to investigate forward-swept wing aerodynamics at transonic speeds.^[1] Part of a series of “flying laboratories” designed by Pavel Tsybin, the LL-3 featured a highly forward-swept wing and was powered by a solid-fueled rocket engine. It completed over 100 test flights, reaching speeds up to Mach 0.97, providing valuable data on the performance and control of forward-swept wings at near-transonic velocities.

The LL-3's design and flight testing contributed significantly to the understanding of forward-swept wing aerodynamics^[2], influencing later aircraft such as the Sukhoi Su-47. Despite its promising results, the LL-3 remained an experimental platform and was never developed into an operational aircraft.

References

^ "Уголок неба ¦ BAC. Цыбин П.В." www.airwar.ru. Retrieved 2025-06-20.
^ Mann, Michael; Mercer, Charles (November 1986). Forward-Swept-Wing Configuration Designed for High Maneuverability by Use of a Transonic Computational Method (PDF) (Technical report). Nasa Technical Paper. Vol. 2628. Retrieved 1 July 2024.

[1] "Уголок неба ¦ BAC. Цыбин П.В." www.airwar.ru. Retrieved 2025-06-20.

[2] Mann, Michael; Mercer, Charles (November 1986). Forward-Swept-Wing Configuration Designed for High Maneuverability by Use of a Transonic Computational Method (PDF) (Technical report). Nasa Technical Paper. Vol. 2628. Retrieved 1 July 2024.

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