SU276616A1

SU276616A1 - Tunnel sprayer

Info

Publication number: SU276616A1
Application number: SU1307684A
Authority: SU
Inventors: Ю.Г. Логачев; Н.А. Демидов; Е.С. Барышев
Original assignee: Рижский Краснознаменный Институт Инженеров Гражданской Авиации Им.Ленинского Комсомола
Priority date: 1969-02-18
Filing date: 1969-02-18
Publication date: 1976-02-25

Description

Изобретение относитс к распылитель- ной аппаратуре дл авиационно-химических работ в сельском хоз йстве и может найти применение в тех област х, где требуетс рассеивать различные вещества с летательного аппарата.The invention relates to spray equipment for aerial chemical work in agriculture and may find application in areas where it is required to disperse various substances from an aircraft.

Дл рассеивани и распыливани сыпучих веществ с летательного аппарата широкое распространение получили туннельные распылители. Обычно на самолете тун нельный распылитель устанавливаетс под фюзел жем. Транспортирювка распыливае- мого вещества в туннельном распылителе осуществл етс внутренним воздущным потоком .Tunnel diffusers are widely used to disperse and atomize bulk materials from an aircraft. Typically, a tunnel sprayer is installed under the fuselage on an airplane. The transport of the sprayed substance in the tunnel sprayer is carried out by an internal air flow.

С увеличением расхода распыливае мого вещества, подаваемого в распылитель, возрастает сопротивление его каналов потоку и, соответственно, уменьшаютс скорости внутреннего воздушного потока.With an increase in the flow rate of the sprayed substance supplied to the sprayer, the resistance of its channels to the flow increases and, accordingly, the speeds of the internal air flow decrease.

Когда скорости воздуха во внутренних каналах падают до некоторого предельно допустимого значени , по вл етс остаточное осаждение вещества. Поэтому дл обеспечении заданного расхода каналы должны When the air velocity in the internal channels falls to a certain maximum permissible value, residual sedimentation of the substance appears. Therefore, to ensure a given flow rate, the channels must

иметь достаточно болыиие прохопные сече- ни , чтобы скорости внутреннего возпуишого потока не пацали ниже предельно аопустимых значений. При увели .ении расхода распыливаемого вещества растут габау)иты каналов, это сопровождаетс ростом лобовой площади и лобового сопротивлени туннельного распылител .to have enough large flow sections so that the speed of the internal flow is not lower than the maximum allowable values. When increasing the consumption of the sprayed substance, the gaba channels and channels grow, this is accompanied by an increase in the frontal area and frontal resistance of the tunnel sprayer.

Продолмсительность полета с работающим распылителем в 10-15 раз меньше времени остального полета. С увеличение 1 расхода распыливаемого вещества относительна величина рабочего врек:ени уменьшаетс , а лобовое сопротивление распылител и затраты мощности на его транспо|- тировку растут. Ширина рабочего покрыти обрабатываемой поверхности при прочих parvных услови х зависит от размаха туннел,ного распылител .The duration of the flight with a working sprayer is 10-15 times less than the rest of the flight. With an increase in the flow rate of the sprayed substance, the relative magnitude of the operating law decreases, and the frontal resistance of the sprayer and the cost of power required to transport it increase. The width of the working surface of the treated surface, with other parv conditions, depends on the scope of the tunnel sprayer.

Claims

Currently used tunne sprays have fixed geometry, with the result that their drag is large both {time and work, and in the rest of the flight. The aim of the invention is to create a tunnel sprayer, which allows the symbol to increase the flow rate of the sprayed substance and the width of the working coating of the surface to be treated and su 1nvs1gviym & to reduce in non-working flight its lot resistance, and therefore the power for transportation. . ; The QprnQcHd of the invention is good for co-GIsHenIy1Kygyyy7 | OV tunnels and ample scans. By crossing the edge, flat screens are installed that can be rotated; .a also rotate them BOKpyi: its longitudinal axis. ; Coitsev screens in the working position yBteaHiHBaraT is the vacuum at the exit of the channels, as a result of which the performance of the tunnel sprayer is increased (the maximum flow rate in the process flow increases). At the same time, the width of the working coating of the treated surface increases. With the sprayer inoperative, end screens are installed downstream, which contributes to a significant reduction in drag coefficient and frontal area. . Taken together, the efficiency of the proposed sprayer, as compared to the existing sprayer, is increased. FIG. 1 schematically shows the proposed sprayer in the working position; in fig. 2 - spray with channels closed with end screens (not, working position); Fig. 3 shows the proposed sprayer with end screens rotated around its longitudinal axis (non-operating position). The tunnel sprayer consists of air intake port 1, channels 2, along which tr. the sprayed substance is transported by a renn air flow, loading of version 3, through which the sprayed substance is dispensed by the sprayer, the end screens 4. The sprayed sprayed into the channels of the sprayer sprayer is transported through them to the air flow through the air flow to the spray outlet and the supply line. , to provide an operational width of working pokrti. Psav {filing feeders sprayed 4 ego eJTJBftMi nebulizers from its screens 4 iiCTeija aHfilu tcsf along the flow and close :: cut out the cial sections (figure 2) or rotate i okpyr of its axis (figl and 3), you can draw it. the frontal resistance of the carrier and the cost of its transport. The ability to control the frontal resistance of a tunnel sprayer by folding screens or turning it downstream can also be used to improve the take-off and landing characteristics of an aircraft, and for airplanes with engines that have a slow acceleration (for example, HPV) cases x Claims of the invention 1. A tunnel sprayer comprising an air intake and channels with feed openings, characterized in that, in order to increase the consumption of the sprayed material, end screens are installed at the exit sections of the channels.

2. Sprayer pop. 1, characterized in that, in order to reduce the drag of the sprayer in the inoperative position, the end shields are made rotatable about the vertical axis of their attachment to the channels.

3. Sprayer according to PP.1 and 2 ,, about the fact that the end screens are made rotatable around their longitudinal axis.

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FIG. 2