Contents

Russian Aeronautics

Vol. 69, No. 1, 2026

AIRCRAFT EQUIPMENT

Challenges in Gaganyaan Mission: an Analysis of India’s Human Spaceflight Endeavour

A.V. Santhana Babu p. 1  abstract

FLIGHT VEHICLE DESIGN

On the Algorithm for Designing the Required Thrust of Vertical Takeoff and Landing Aircraft Power Units

V. G. Gainutdinov, T. Yu. Gainutdinova, R. A. Sharifullin, N. A. Mysovskii, and L. A. Fazliev p. 19  abstract

Numerical-Stochastic Method of Modeling the Aircraft Wing Icing in Flight

V. N. Nikolaev and S. A. Gusev p. 30  abstract

STRUCTURAL MECHANICS AND STRENGTH OF FLIGHT VEHICLES

Computational Experiments in the Problem of Nonlinear Oscillations of a Rectangular Plate

S. D. Algazin p. 40  abstract

Analysis of the Load-Bearing Capacity of the Composite Structure of the Engine Compartment Cowlings of a Medium-Range Helicopter Engine Nacelle

R. R. Mirkhazov, R. R. Mirkhazov, S. A. Lukankin, and L. U. Sultanov p. 46  abstract

FLIGHT DYNAMICS AND CONTROL OF FLIGHT VEHICLES

Operational Features of Amphibious Aircraft during Firefighting

I. B. Abbasov, A. V. Pis’menov, and O. B. Spiridonov p. 57  abstract

Synthesis of an Optimal Digital Controller for Linear Time-Stationary Discrete Dynamic Systems

A. A. Baloev p. 78  abstract

A High-Order Integrator for Reconstructing the Local Path of an Unmanned Vehicle Using Signals from Inertial Sensors

V. A. Zvonarev and A. V. Leont’ev p. 87  abstract

Algorithm for Target and Attitude Indicator Recognition Based on Image Preprocessing for Lightweight Neural Networks

D. A. Zvonarev and T. Yu. Zhoraev p. 97  abstract

Synthesis of an Adaptive Noise-Immune Control System for a Gas Turbine Engine

V. I. Petunin p. 111  abstract

AIRCRAFT AND ROCKET ENGINE DESIGN AND DEVELOPMENT

Determination of the Smoke Opacity of Combustion Products in a Turbulent Flame

A. V. Baklanov, F. M. Valiev, and K. G. Ivanov p. 120  abstract

Dynamic Characteristics of the Flow Impact on the Elements of Thrust Reverser at the Switch-on Stage

V. L. Varsegov and L. A. Saukhin p. 127  abstract

Investigation of the Possibility of Using a Hydrogen Fuel Cell in the Power Plant of an Unmanned Aerial Vehicle

A. D. Mityushkin, A. M. Ermakov, R. R. Salakhov, and M. Mrshd p. 135  abstract

Influence of Swirl Vane Angle in a Two-Stage Swirler on Fuel-Air Mixing and Temperature Field Non-Uniformity Downstream from a Combustion Chamber

P. Zhang and B. G. Mingazov p. 143  abstract

AIRCRAFT AND ROCKET ENGINE THEORY

Fluctuation Theory of Thermal Autoignition

V. L. Varsegov, Ziwan Li, W. M. Yousef, and V. A. Shchukin p. 153  abstract

Estimation of Heat Transfer at the Edge of the Entrance Length in a Channel

I. A. Davletshin p. 162  abstract

AIRCRAFT PRODUCTION TECHNOLOGY

Intensive Molding Technologies in Production of Sandwich Structures with Epoxy Foam Core

K. A. Andrianova, A. Kuomalibieke, V. V. Batrakov, and L. M. Amirova p. 170  abstract

Plasma–Liquid Welding of Thin-Walled Aluminum Components for Aerospace Applications

E. R. Bel’gibaev, M. N. Semenov, R. R. Kayumov, and A. F. Gaisin p. 176  abstract

Development of a 3D Printed Combustion Chamber Prototype for a Liquid Rocket Engine with a Spike-Shaped Nozzle and Methods for Copper Deposition on the External Surface. Conducting the Hot-Fire Tests

Yu. E. Kapelyushin, A. O. Shul’ts, V. L. Salich, and E. A. Mikhailov p. 185  abstract

Technology for Manufacturing an Ultra-Low Areal Density Nonwoven Web

P. L. Lyudogovskii, N. A. Semin, R. R. Akhmetsharipov, and A. R. Kovtunova p. 194  abstract

RADIO ENGINEERING AND COMMUNICATION

Low-Frequency Interferometer for Estimation of Acoustic Performance of Liner Samples at High Sound Pressure Levels

O. Yu. Kustov, I. V. Khramtsov, V. V. Pal’chikovskii, V. V. Ershov, A. A. Kuznetsov, and I. A. Korin p. 199  abstract

Optimization of the Arrangement of Decoupling Capacitors on the Printed Circuit Board of an Electronic Device to Ensure Vibration Resistance

P. A. Makeev and S. F. Chermoshentsev p. 212  abstract

Loop Gain of a Pulsed Voltage Converter with Output Voltage Loop and Transistor Current Loop Negative Feedback

D. V. Shushpanov p. 220  abstract

FLIGHT VEHICLE DESIGN

Application of Variable-Span Wing for a Stratospheric Aircraft

I. D. Zverkov, A. V. Kryukov, R. I. Semukhin, A. A. Meshkov, and V. P. Chekhov p. 242  abstract

STRUCTURAL MECHANICS AND STRENGTH OF FLIGHT VEHICLES

Determination of Natural Frequencies of a Shell Element

M. E. Marchuk, S. I. Senashov, and A. I. Lykum p. 250  abstract

AIRCRAFT AND ROCKET ENGINE DESIGN AND DEVELOPMENT

Changing the Frequency Response of an Ejector Pulse Jet Engine as a Method for Obtaining Vibratory Combustion

K. A. Sidenko and V. V. Biryuk p. 256  abstract

Flow Field Characteristics of Single Expansion Nozzle

I. D. Murthy, P. Lovaraju, and V. R. Raju p. 263  abstract