VESTNIK of Samara University. Aerospace and Mechanical EngineeringVESTNIK of Samara University. Aerospace and Mechanical Engineering2542-04532541-7533Samara National Research University622210.18287/2541-7533-2018-17-2-91-99UnknownProblematic issues of assessing the strength of axisymmetric parachute systems by conducting breakdown tests in flight experimentsIvanovP. I.<p><span lang="EN-US">Doctor of Science (Engineering), </span><span lang="EN-US">Professor<br />Lead Flight-Test Specialist</span></p>niiaus@mail.ruKurinnyyS. M.<p><span lang="EN-US">Principal Flight-Test Engineer</span></p>niiaus@mail.ruKrivorotovM. M.<p><span lang="EN-US">Flight-Test Engineer</span></p>niiaus@mail.ruShmerovaG. V.<p><span lang="EN-US">Design Engineer</span></p>niiaus@mail.ruResearch Institute of Aeroelastic Systems0407201817291990407201804072018Copyright © 2018, VESTNIK of Samara University. Aerospace and Mechanical Engineering2018<p>The article deals with problematic issues of assessing the strength of axisymmetric parachute systems in flight tests. One of the main tasks in preparing for flight tests is the choice of conditions for carrying out an experiment. Variants of parachute system breakdown tests are considered. Loads occurring in parachute system inflation are analyzed. The specific character and peculiarities of parachute damages and failures are presented in the article. The problem of parachute system destruction under breaking loads considerably smaller than the parachute load bearing capacity is posed. We propose to use methods of experimental optimization and stochastic approximation to reduce the number of experiments. The conclusion is drawn on possible ways of solving the problem of assessing the breaking load and load bearing capacity obtained in assessing the strength of parachute systems in a flight experiment.</p>Парашютная системаиспытанияпрочностьнесущая способностьрежимыParachute systemtestsstrengthload bearing capacitymodes[1. Standard of the enterprise STP 604.20-78. Parachute systems. Terms, designations and definitions. Feodosiya: FF NII AU Publ., 1978. 25 p. (In Russ.)][2. GOST 16504-81. The state system of testing products. Product test and quality inspection. General terms and definitions. Moscow: Izdatel’stvo Standartov Publ., 1981. 24 p. (In Russ.)][3. Ivanov P.I. Letnye ispytaniya parashyutnykh system [Flight tests of parachute systems]. Feodosia: Grand-S Publ., 2001. 332 p.]