On the issue of hydrodynamic braking efficiency dur-ing high-velocity tests on a rocket-rail track

On the issue of hydrodynamic braking efficiency dur-ing high-velocity tests on a rocket-rail track

Автор: Astakhov S.A., Biryukov V.I., Kataev A.V.

Журнал: Siberian Aerospace Journal @vestnik-sibsau-en

Рубрика: Aviation and spacecraft engineering

Статья в выпуске: 4 vol.23, 2022 года.

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At present, the creation of high-velocity aircraft is a promising direction in the development of aircraft and armament both in Russia and abroad. The increase in velocity characteristics of newly developed sam-ples imposes new requirements on test bench equipment, including rocket-rail tracks. The requirements are growing both for the acceleration and braking means, which ensure the tested materiel safety. The proposed work deals with a hydrodynamic braking method used in high-velocity dynamic tests on a rocket-rail track at the Federal State Enterprise “State Governmental Scientific-Testing Area of Aircraft Systems named after L.K. Safronov". The paper gives the description of the braking devices, presents the dependencies determining the calculated values of the braking force developed by them, and describes the braking intensity control methods, which increase the efficiency and safety of braking as well as expand the permissible speed range of the hydrodynamic braking device application. The method of increasing the efficiency of the braking devices functioning by using a special form of its working part profile is presented. The corresponding examples of the braking modes are given for a comparative assessment of the braking efficiency parameters when using braking devices with special and triangular profiles. The working part profile of the hydrodynamic braking device calculated according to the proposed method provides more efficient and safe braking compared with the previously used triangular profile, by maintaining a constant stopping force in a wide velocity range.

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Rocket-rail track, rocket sled, ground tests, dynamic tests, braking, hydrodynamic braking

Короткий адрес: https://sciup.org/148329658

IDR: 148329658   |   DOI: 10.31772/2712-8970-2022-23-4-641-656

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