SU134140A1 - Method of measuring stresses in aircraft propellers with coaxial switching scheme - Google Patents

Method of measuring stresses in aircraft propellers with coaxial switching scheme

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Publication number
SU134140A1
SU134140A1 SU652790A SU652790A SU134140A1 SU 134140 A1 SU134140 A1 SU 134140A1 SU 652790 A SU652790 A SU 652790A SU 652790 A SU652790 A SU 652790A SU 134140 A1 SU134140 A1 SU 134140A1
Authority
SU
USSR - Soviet Union
Prior art keywords
bridges
switching scheme
measuring
coaxial switching
aircraft propellers
Prior art date
Application number
SU652790A
Other languages
Russian (ru)
Inventor
Н.И. Морозов
Original Assignee
Н.И. Морозов
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Н.И. Морозов filed Critical Н.И. Морозов
Priority to SU652790A priority Critical patent/SU134140A1/en
Application granted granted Critical
Publication of SU134140A1 publication Critical patent/SU134140A1/en

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  • Measurement Of Resistance Or Impedance (AREA)

Description

Известны способы измерени  напр жений в авиационных винтах при СООСНОЙ схеме их включени  ири помощи тензометрической аппаратуры , когда датчики включаютс  в измерительные мосты с общим полумостом, при этом большое вли ние на результат измерени  оказывает иереходное сопротивление контактов.Methods are known for measuring stresses in aircraft propellers with an XOO scheme for switching them on using strain gauge instrumentation when the sensors are connected to measuring bridges with a common half-bridge, and the current resistance of the contacts has a large effect on the measurement result.

Описываемый способ уменьшает вли ние иереходиого сопротивлени  контактов токосъемника на баланс измерительных мостов.The described method reduces the influence of the current resistance of the current collector contacts on the balance of the measuring bridges.

Это достигаетс  тем, что питание мостов первого винта осуществл етс  непосредственным присоединением их к проводам питани  аппаратуры , а питание мостов второго винта осуществ.л етс  через трансформатор и средние точки вспомогательных полумостов обоих винтов присоедин ютс  к обихему проводу.This is achieved by supplying the bridges of the first screw with their direct connection to the equipment supply wires, and supplying the bridges of the second screw through a transformer and the middle points of the auxiliary half bridges of both screws are connected to the common wire.

На чертеже изображена электрическа  схема включени  датчиков дл  измерени  напр жени  на двух винтах при соосиом их включении .The drawing shows an electrical circuit for switching sensors for measuring the voltage on two screws with their coaxial switching on.

На соосно включенных воздушных винтах / и 2 установлены тензометрические датчики 3, включенные в измерительные мосты с общим полумостом, лредстазл юшим собой два стабильных омических сопротивлени  4 и 5. Средние точки 6 и 7 вспомогательных полумостов обоих винтов присоедин ютс  к общему проводу 8. Питание мостов винта 1 осуществл етс  их непосредственным присоединением к проводам питани  9 и 10 аппаратуры. Питание мостов винта 2 осуществл етс  через трансформатор // Вследствие отсутстви  св зи между проводами мостов винтов / и 2 вли ние переходного сопротивлени  многоканальных коммутирующих токосъемников 12, 13 на баланс схемы исключаетс .The coaxially connected air screws / and 2 are equipped with strain gauge sensors 3, included in measuring bridges with a common half-bridge, two other stable ohmic resistances 4 and 5 are connected. The mid-points 6 and 7 of the auxiliary half-bridges of both screws are connected to the common wire 8. Power supply for bridges screw 1 is carried out by their direct connection to the power supply wires 9 and 10 of the apparatus. The power supply of the screw bridges 2 is carried out through a transformer // Due to the lack of connection between the wires of the screw bridges / and 2, the influence of the transient resistance of the multichannel switching current collectors 12, 13 on the balance of the circuit is excluded.

Общий источник питани  9, 10 па все датчики 3 и схема включени  датчиков с общим полумостом обеспечивают измерение напр жени  в винтах одним комплекто.м аппаратуры, подключаемым к токосъемнику 12.A common power source of 9, 10 pas. All sensors 3 and a circuit for switching on sensors with a common half-bridge provide a voltage measurement in screws with one set of equipment connected to the current collector 12.

Предмет изобретени Subject invention

Способ измерени  напр жений в авиационных винтах при сооснон схеме их включени , отличающийс  тем, что, с целью уменьшени  вли ни  переходного сопротивлени  контактов токосъемника на баланс измерительных мостов, питание мостов первого винта осуществл етс  непосредственным присоединением к проводам питани  аппаратуры , а питание мостов второго винта осуществл етс  через трансформатор и средние точки вспомогательных полумостов обоих винтов присоедин ютс  к общему проводу.A method of measuring voltages in aircraft screws with a coaxial switching circuit, characterized in that, in order to reduce the effect of the current collector contact resistance on the balance of the measuring bridges, the bridges of the first screw are directly connected to the supply wires of the equipment, and the bridges of the second screw are powered made through the transformer and the midpoints of the auxiliary half bridges of both screws are connected to the common wire.

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SU652790A 1960-02-01 1960-02-01 Method of measuring stresses in aircraft propellers with coaxial switching scheme SU134140A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU652790A SU134140A1 (en) 1960-02-01 1960-02-01 Method of measuring stresses in aircraft propellers with coaxial switching scheme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU652790A SU134140A1 (en) 1960-02-01 1960-02-01 Method of measuring stresses in aircraft propellers with coaxial switching scheme

Publications (1)

Publication Number Publication Date
SU134140A1 true SU134140A1 (en) 1960-11-30

Family

ID=48405120

Family Applications (1)

Application Number Title Priority Date Filing Date
SU652790A SU134140A1 (en) 1960-02-01 1960-02-01 Method of measuring stresses in aircraft propellers with coaxial switching scheme

Country Status (1)

Country Link
SU (1) SU134140A1 (en)

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