The article considers the slipping process of friction clutches in gearboxes of cars and tractors during gear shifting without interruption of power flow. It is proved that the gear shifting process in gearbox without power flow interruption occurs when clutch friction discs of engaged gear are slipping and discs of disengaging gear are closed. At this, the value of torque transmitted by disengaging friction clutch in gearbox depends on a value of frictional moment of engaging friction clutch. The results of this article also apply to composite gearboxes such as DSG (Direct Shift Gearbox).

The article considers ways to improve the quality of habitability of crew workplaces of armored vehicles during operation. The analysis performed for different ways to remove powder gases from the crew compartment of combat vehicles. It is proposed the new original methods of cleaning of habitable compartments of combat vehicles from the powder gases.

The development of engineering and technology makes it possible to exclude direct human work in hazardous conditions, replacing it with remote control of robotic complexes. Moreover, mobile robotic systems (MRS) of the ultralight weight category, weighing up to 30 kg, are becoming more widespread. Due to their compactness and ease of transfer from one facility to another, they have become indispensable in the urban environment, for example, when it is necessary to work after man-made accidents or terrorist attacks, for mine clearance, to eliminate the consequences of the release of toxic substances, etc. However, for ultralight MRS the process of overcoming obstacles, encountered in an urban environment and easily overcomed by people or larger machinery, can be an insurmountable task. In this regard, an urgent issue is the choice of rational design parameters of the mover. This article is devoted to the study of MRS with variable mover geometry in overcoming typical urban obstacles - curbs and stairs. At the beginning of the article, traffic conditions are described and a classification of city obstacles is given for the reasons for their occurrence and the difficulty to overcome. Further, the article presents the options for mover used in super-light weight category of MRS. The analysis of mover, that is more suitable for urban conditions and requirements for the dimensions of the chassis of MRS are given. In the main part of the article, a study of the dynamics of the movement of MRS weighing 25 kg in the “Universal Mechanism” software for overcoming a vertical step of 0.11 m high (as a typical example of entering a curb) and a staircase with five steps and dimensions for one step are 0.330x0.145 m is presented. Based on the results of the simulation, the conclusions were drawn and the relationship between the recorded overloads acting on the MRS body and the linear dimensions of MRS chassis were shown.

General optimization scheme for suspension system of high-speed tracked vehicle is presented. On its basis, a method for selection of rational parameters of suspension system is developed.

 íàñòîÿùåå âðåìÿ ïîëó÷àþò ðàñïðîñòðàíåíèå ìàøèíû, â êîòîðûõ íå ïðåäóñìîòðåíî íàëè÷èå âîäèòåëÿ èëè ýêèïàaeà. Óïðàâëÿþòñÿ îíè äèñòàíöèîííî èëè ñïîñîáíû äâèãàòüñÿ ñàìîñòîÿòåëüíî. Äàííûå ìàøèíû îòíîñÿòñÿ ê êëàññó áåçýêèïàaeíûõ. Àíàëèç ýòàïîâ ðàçðàáîòêè õîäîâîé ÷àñòè äëÿ òðàäèöèîííîé ýêèïàaeíîé ìàøèíû ïîêàçûâàåò, ÷òî îñíîâíûå òðåáîâàíèÿ, ïðåäúÿâëÿåìûå ê ñèñòåìàì ïîäðåññîðèâàíèÿ, çàêëþ÷àþòñÿ â òîì, ÷òî âåðòèêàëüíûå óñêîðåíèÿ, äåéñòâóþùèå íà âîäèòåëÿ è ýêèïàae, íå äîëaeíû ïðåâûøàòü îïðåäåëåííûõ çíà÷åíèé. Îäíàêî äëÿ áåçýêèïàaeíûõ ìàøèí äàííûå òðåáîâàíèÿ íåïðèìåíèìû ââèäó îòñóòñòâèÿ ëþäåé â êîðïóñå òðàíñïîðòíîãî ñðåäñòâà. Ó÷èòûâàÿ, ÷òî áåçýêèïàaeíûå ìàøèíû äîëaeíû ïåðåäâèãàòüñÿ â òåõ aeå óñëîâèÿõ, ÷òî è òðàäèöèîííûå, â òîì ÷èñëå ïî ïåðåñå÷åííîé ìåñòíîñòè, â íåêîòîðûõ ñëó÷àÿõ ïî òðàññàì ãàðìîíè÷åñêîãî ïðîôèëÿ, ñóùåñòâóåò àêòóàëüíàÿ çàäà÷à ïî ðàçðàáîòêå ñïåöèàëüíûõ òðåáîâàíèé, êîòîðûå äîëaeíû áûòü ó÷òåíû ïðè ïðîåêòèðîâàíèè õîäîâûõ ÷àñòåé äëÿ áåçýêèïàaeíûõ ìàøèí êàê îòäåëüíîãî êëàññà òðàíñïîðòíîé òåõíèêè.  ñòàòüå ïðåäëàãàþòñÿ ê ðàññìîòðåíèþ íåêîòîðûå ïîäõîäû ê îïðåäåëåíèþ òàêèõ òðåáîâàíèé.  ÷àñòíîñòè, ïðè èçìåíåíèè íàãðóçêè íà ýëåìåíòû õîäîâîé ÷àñòè ïðåäëàãàåòñÿ èñõîäèòü èç óñëîâèÿ, ñîãëàñíî êîòîðîìó â ìàøèíå äîëaeíà áûòü ïðåäóñìîòðåíà âîçìîaeíîñòü äëÿ òðàíñïîðòèðîâàíèÿ ïîëåçíîé íàãðóçêè, ÷òî, êàê ïðàâèëî, óêàçûâàåòñÿ â òåõíè÷åñêîì çàäàíèè.  ñîîòâåòñòâèè ñ ýòèì óòâåðaeäåíèåì îáîñíîâàíà íåîáõîäèìîñòü èññëåäîâàíèÿ íàèáîëåå íàãðóaeåííûõ ýëåìåíòîâ ïîäâåñêè, â ðåçóëüòàòå êîòîðîãî âîçìîaeíî ñïðîãíîçèðîâàòü ìàññîâûå õàðàêòåðèñòèêè ïðîåêòèðóåìîé õîäîâîé ÷àñòè.  äàííîé ðàáîòå îáîçíà÷åíû êëþ÷åâûå ïðîáëåìû è ïðåäëîaeåíû íåêîòîðûå ïóòè èõ ðåøåíèÿ. Íà îñíîâàíèè ïðèâåäåííîãî ìàòåðèàëà ñäåëàíû íåêîòîðûå âûâîäû, êîòîðûå âîçìîaeíî èñïîëüçîâàòü â äàëüíåéøåé ðàáîòå ïðè ðåøåíèè ïðàêòè÷åñêèõ çàäà÷ â äàííîé îáëàñòè.