Airdrop missions occur most commonly under conditions of gusty wind. To avoid payload canting over or drifting away from landing site the automatic parachute release is necessary. In this work, the development is considered and operation principle and algorithm are described of the device for automatic payload system separation at load landing. The algorithm is based on the device inclination tracking during the airdrop. When a certain device inclination angle is reached, the payload is automatically separated using the 3-ring release system. It has been proposed to use a triaxial accelerometer based inclinometer for inclination angles determination. However, at the significant lateral accelerations the inclination angle calculated that way differs markedly from true angle. The complementary filter based on the accelerometer and angular rate sensor data combination was used to solve this problem. The developed device is designed for loads weighing up to 200 kg, has a mass of about 1 kg and uses inertial MEMS-sensors based feedback system. Complex testing was carried out including the evaluation of inclination angle accuracy determination and the device algorithm operation, as well as flight testing of device airdrop with payload. Tests have confirmed the full device performance.
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Key words:
MEMS, angular rate sensor, accelerometer, complementary filter, payload airdrop
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Published in:
MICRO- AND NANOSYSTEM TECHNOLOGY
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Bibliography link:
Galkin А. А., Erkin P. V., Zaharov V. P., Solomkina N. A., Timoshenkov A. S., Timoshenkov S. P. Automatic payload system separation device based on inertial MEMS. Proc. Univ. Electronics, 2023, vol. 28, no. 4, pp. 489–499. https://doi.org/10.24151/1561-5405-2023-28-4-489-499. – EDN: BQUFVF.
Alexander A. Galkin
National Research University of Electronic Technology, Russia, 124498, Moscow, Zelenograd, Shokin sq., 1; “Laboratory of Microdevices” LLC, Russia, 124527, Moscow, Zelenograd, Solnechnaya alley, 6
Pavel V. Erkin
National Research University of Electronic Technology, Russia, 124498, Moscow, Zelenograd, Shokin sq., 1; “Laboratory of Microdevices” LLC, Russia, 124527, Moscow, Zelenograd, Solnechnaya alley, 6
Valerii P. Zaharov
National Research University of Electronic Technology, Russia, 124498, Moscow, Zelenograd, Shokin sq., 1; “Laboratory of Microdevices” LLC, Russia, 124527, Moscow, Zelenograd, Solnechnaya alley, 6
Nadezhda A. Solomkina
National Research University of Electronic Technology, Russia, 124498, Moscow, Zelenograd, Shokin sq., 1; “Laboratory of Microdevices” LLC, Russia, 124527, Moscow, Zelenograd, Solnechnaya alley, 6
Alexey S. Timoshenkov
“Laboratory of Microdevices” LLC, Russia, 124527, Moscow, Zelenograd, Solnechnaya alley, 6
Sergey P. Timoshenkov
National Research University of Electronic Technology, Russia, 124498, Moscow, Zelenograd, Shokin sq., 1
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