SU672481A1 - Sextant - Google Patents

Sextant

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Publication number
SU672481A1
SU672481A1 SU782566435A SU2566435A SU672481A1 SU 672481 A1 SU672481 A1 SU 672481A1 SU 782566435 A SU782566435 A SU 782566435A SU 2566435 A SU2566435 A SU 2566435A SU 672481 A1 SU672481 A1 SU 672481A1
Authority
SU
USSR - Soviet Union
Prior art keywords
scale
angle
sextant
rotation
accuracy
Prior art date
Application number
SU782566435A
Other languages
Russian (ru)
Inventor
Виктор Иванович Бойко
Original Assignee
Bojko Viktor
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 Bojko Viktor filed Critical Bojko Viktor
Priority to SU782566435A priority Critical patent/SU672481A1/en
Application granted granted Critical
Publication of SU672481A1 publication Critical patent/SU672481A1/en

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Description

II

Изобретение относитс  к оптическим устройствам в области астронавигации и может быть использовано на судах морского флота дл  измерени  высот небесных светил.The invention relates to optical devices in the field of astronavigation and can be used on ships of the navy to measure the heights of celestial bodies.

Известны морские секстаны, предназначенные дл  измерени  высот небесных светил, основанные на принципе измерени  углов между плоскост ми двух зеркал , от которых двукратно отражаетс  светило и попадает в зрительную трубу 1. Измерение высот сводитс  к измерению угла поворота между зеркалами. Шкала морского секстана равна 45 в то врем , как на ней измер ютс  углы от нул  до 90. Значит, каждое деление на шкале вдвое меньше той величины дуги, ко торую оно обозначает. Шкала выполнена в уменьшенном масштабе. На такой сжатой шкале трудно установить угол с большой точностью, А так как угол.алиады Вдвое,меньше высоты светила, го ошибка Сн ти  отсчета со шкалы удваивает ошибку в измеренной высоте светила, что снижает точность инструмента.Sea sextants are known for measuring the heights of celestial bodies based on the principle of measuring the angles between the planes of two mirrors, from which the light is reflected twice and enters the telescope 1. The height measurement is reduced to measuring the angle of rotation between the mirrors. The scale of the marine sextant is 45 while the angles from zero to 90 are measured on it. Therefore, each division on the scale is half the size of the arc that it denotes. The scale is made on a reduced scale. On such a compressed scale, it is difficult to set the angle with great accuracy, and since the angle of the altitude is twice as small as the height of the body, the error of taking off the reference from the scale doubles the error in the measured height of the body, which reduces the accuracy of the tool.

Повышение ТОЧНОСТИ сн ти  показаний за счет удлинени  алиады и более удаленным расположением шкалы, что расширит рассто ни  Между делени ми на шкале и Increasing the ACCURACY of taking readings by lengthening the aliad and more distant positioning of the scale, which will increase the distance between the divisions on the scale and

. даст возможность точнее снимать отсчет, вызовет увеличение размеров секстана, что очень неудобно при его испольгювании. . will provide an opportunity to more accurately take a readout, will cause an increase in the size of the sextant, which is very inconvenient when using it.

Целью изобретени   вл етс  повьпцение точности секстана без увеличени  его размеров.The aim of the invention is to improve the accuracy of the sextant without increasing its size.

Цель достигаетс  тем, что подвижное относительно оптической оси инструмента заркало св зано с амплитудой через систему шестерен со сменным коэффициентом передачи, котора  уменьшает угол поворота подвижного зеркала относительно оптической оси инструмента по уравнению с углом поворота алидады.The goal is achieved by the fact that the zarokal, which is movable relative to the optical axis of the tool, is associated with amplitude through a gear system with a changeable transmission coefficient, which reduces the angle of rotation of the movable mirror relative to the optical axis of the tool according to the equation with the angle of rotation of the alidade.

Таким образом, зеркало может мен ть свой угол относительно алиады и угол поворота его относительно оптической осиThus, the mirror can change its angle relative to the aliad and its angle of rotation relative to the optical axis.

SU782566435A 1978-01-09 1978-01-09 Sextant SU672481A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782566435A SU672481A1 (en) 1978-01-09 1978-01-09 Sextant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782566435A SU672481A1 (en) 1978-01-09 1978-01-09 Sextant

Publications (1)

Publication Number Publication Date
SU672481A1 true SU672481A1 (en) 1979-07-05

Family

ID=20743094

Family Applications (1)

Application Number Title Priority Date Filing Date
SU782566435A SU672481A1 (en) 1978-01-09 1978-01-09 Sextant

Country Status (1)

Country Link
SU (1) SU672481A1 (en)

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