Board for selecting observation objects from orbital spacecraft

FIELD: physics.

SUBSTANCE: invention can be used to determine and select observation objects onboard an orbital spacecraft moving on a near-circular orbit. The board for selecting observation objects from an orbital spacecraft has a flexible tape with a map of the earth's surface, a semitransparent plate placed over said tape having an image of half the orbit pass of the spacecraft between ascending and descending nodes, and a device for moving the tape along the plate with two rollers spaced apart and mounted parallel to each other. The tape is stretched onto the rollers with possibility of movement thereof along the equator line. The map of the earth's surface is divided into two parts on the equator line. Part of the map with the image of the northern hemisphere and part of the map with the image of the southern hemisphere are arranged in series on the tape. The equator line of the part of the map with the image of the northern hemisphere is a continuation of the equator line of the part of the map with the image of the southern hemisphere. The device for moving the tape along the plate has processor rollers placed in parallel between the first and second rollers. The tape is stretched onto said rollers and the newly introduced process rollers. The size of the tape and the plates along the direction perpendicular to the equator is equal to the length of the latitude line of the map showing one of the hemispheres.

EFFECT: smaller size of the board.

3 dwg

The invention relates to the field of space technology and can be used to identify and select objects on Board an orbiting SPACECRAFT), moving in a near-circular orbit.

Known maps of the earth's surface (Votyakov A.A. Theoretical geography-3. Map of a flat earth. - M.: Sofia, 2002) and maps of the sky (celestial Map with the zodiac constellations. - M: DI EM BI, 2004), which can be used to identify and select geophysical and astronomical objects for observations performed with the AC. The lack of maps is that they do not have graphical information about the orbit of the SPACECRAFT.

The closest analogues adopted for the prototype, is the tablet to select the ground object observations from orbiting spacecraft (RF patent No. 2324898 from 26.01.2006. IPC G01C 21/24, B64G 1/22 - prototype)containing a flexible tape with a map of the earth's surface, installed over her translucent plate with the image of the two halves of the spiral orbit of the spacecraft, made with a combination of ascending node of the orbit starting the first half revolution of the orbit, and the descending node of the orbit starting the second half revolution of the orbit, and the device providing movement of the tape with the card along the plate with the image of the revolution orbit of the two raznesenii and bonded in parallel between the shafts, when this card is printed on the tape with a combination of start points and end the equator of the map, and the tape is made of a closed ring and stretched over the shaft with a circular movement along the equator line cards, and the distance between the axes of the shafts and the size of the plate with the image of the spiral orbit along the equator is made equal to the value (L-d)/2, where L is the length of the equator of the map; d is the absolute value of the inter-turn distance, measured in linear units along the equator of the map, and the radius of the shaft is made equal to the value of d/(2π).

When using the tablet moves the tape with the card along the plate, in turn combine point of the ascending and descending node of the orbit points of the equator of the map corresponding to the longitude of the ascending and descending nodes of the considered loop. Applied to the plate line orbit show on the map the route of the considered loop that allows you to identify and select objects on the earth's surface to be monitored from the SPACECRAFT.

Tablet, taken as the prototype, has the disadvantage tablet size is large enough and can create difficulties during its operational use (for example, aboard manned SPACECRAFT).

The task of the proposed device is improved ergonomic characteristics of the tablet to select objects on earth observations orbital is about the SPACECRAFT by reducing the size of the tablet.

The technical result is achieved by the fact that in the tablet to select objects on earth observations from orbiting spacecraft, including a flexible tape with a map of the earth's surface, installed over it semi-transparent plate with a picture of a half revolution of the orbit of the spacecraft between the ascending and descending nodes of the orbit and the device providing movement of the tape across the plate with two spaced and bonded in parallel between the shafts, while the tape is tight on the shaft can move along the line of the equator, optionally map the earth's surface is divided by the equator into two parts, and on the tape sequentially placed part of the map depicting the Northern hemisphere and part of a map depicting the southern hemisphere, the equator line of the map depicting the Northern hemisphere continues the line of the equator of the map with the image of the southern hemisphere, with the device providing movement of the tape along the plate introduced technological shafts placed in parallel between the first and second shafts, and the tape is stretched to the above-mentioned shafts and the newly introduced technological shafts, and the size of the tape and the plate along the direction perpendicular to the equator, equal to the length of the lines of latitude of the map, showing one of the hemispheres.

In figure 1, 2, 3 indicated:

1 - ribbon;

2 - part map of the Northern hemisphere;

3 - part cards with the image of the southern hemisphere;

4 - line of the equator of the map depicting the Northern hemisphere;

5 - the equator line of the card with the image of the southern hemisphere;

6 - the starting point of the line of the equator of the map depicting the Northern hemisphere;

7 is an end point of the line of the equator of the map depicting the Northern hemisphere;

8 - the starting point of the line of the equator of the map with the image of the southern hemisphere;

9 is an end point of the line of the equator of the map with the image of the southern hemisphere;

10 is a semi - transparent plate;

11 - line orbit;

12 - point ascending node of the orbit;

13 - point of the descending node of the orbit;

14, the first and second shafts;

15 technological shafts;

16 is a structural member that connects the axis of the shafts;

17 - element design, the locking position of the plate over the shaft.

Map the earth's surface is divided by the equator into two parts: on one side of the map shows the Northern hemisphere of the earth surface on the other side of the map shows the southern hemisphere the earth's surface. On a flexible tape 1 sequentially placed part of the map depicting the Northern hemisphere 2 and the part of the map with the image of the southern hemisphere 3.

Figure 1 presents an example of possible placement on the ribbon 1 two parts of a map with images of the southern and Northern hemispheres, 2 and 3. In the present example, each of the card 2 and 3, placed the image of the corresponding hemisphere with long continuous image of the hemisphere along the line of longitude expressed in degrees, is equal to 360°÷180°=540°. In this case, the card with the image of each hemisphere contains the image of one full hemisphere (for example, the image in the range of longitudes of 0°÷360°) and the image of the half hemisphere (e.g., in the range of longitudes of 0°÷180°or in the range of longitudes "-180°÷360°"-which are continuous with one another. Namely, the image in the range of longitudes of 0°÷360°" continues the image in the range of longitudes of 0°÷180°, forming a total continuous image in the range of longitudes of 0°÷540°". The image in the range of longitudes "-180°÷0°" continues the image in the range of longitudes of 0°÷360°, forming a total continuous image in the range of longitudes "-180°÷360°". As an example, figure 1 shows the case when part of the map depicting the Northern hemisphere 2 contains an image of the Northern hemisphere in the range of longitudes of 0°÷540°", and some cards with the image the receiving of the southern hemisphere 3 contains an image of the southern hemisphere in the range of longitudes"-180°÷360°".

The equator line of the map depicting the Northern hemisphere 4 and the equator line of the card with the image of the southern hemisphere 5 continue one another (lie on the same line, which line placement equatoral two parts of the map). Thus, for example, the end point of the line of the equator of the map depicting the Northern hemisphere 7 combined end point of the line of the equator of the map with the image of the southern hemisphere 9.

Above the ribbon 1 is set to semi-transparent plate 10.

The plate 10 is placed on line orbit 11 between adjacent ascending node of the orbit 12 and the descending node of the orbit 13.

The tablet contains a device providing movement of the tape 1 along the plate 10 which has mounted parallel to the first and second shafts 14 and technological shaft 15, mounted in parallel between the first and second shafts 14. The belt 1 is stretched to the shafts 14, 15 can move along the lines of equatoral cards 4, 5.

The size of the plate 10 along the lines of equatoral cards 4, 5 is equal to the length of the projection line of the orbit 11 on the equator and is calculated by the formula

where L is the length of the line of the equator in the longitude interval of 0°÷360°", measured in linear units; d is the absolute value of the inter-turn distance, measured in linear units along the line of the equator.

The size of the tape 1 and the plate 10 along the direction of the Department, perpendicular to the equator, equal to the length S of the line of latitude of the map, showing one hemisphere.

The device providing movement of the tape 1 along the plate 10 may include a structural member connecting the axis of the shafts 16 and the structural member, the locking position of the plate on the shaft, 17.

A structural member that connects the axis of the shafts 16, connects the axes of the shafts 14, 15 between itself and fixes the relative distance between the axes of the shafts 14, 15.

The structural member, the locking position of the plate on the shaft, 17, fixation of the position of the plate 10 above the shaft 14.

Figure 2 presents the realization of a device for providing movement of the tape 1 along the plate 10, in which the shafts 14, 15 tight tape 1 made of closed. Figure 3 presents the realization of a device for providing movement of the tape 1 along the plate 10, in which the shafts 14, 15 tight tape 1, the ends of which are fixed on technological shafts 15.

Working with the tablet as follows.

We believe that the coils of the orbit, count (start) from the ascending node of the orbit.

Rotation of the shafts 14, 15 and moves the tape 1 with respect to the plate 10 until the setting point of the line of the equator of the map depicting the Northern hemisphere 4, the longitude of which is equal to the value of the longitude of the ascending node of the considered orbits about the bits, with the point of the ascending node of the orbit 12. Line orbit 11 will show on the side of the map depicting the Northern hemisphere 2 the first half of the considered orbits orbits (solid line 11 in figure 1).

Rotation of the shafts 14, 15 and moves the tape 1 with respect to the plate 10 until the setting point of the line of the equator of the map with the image of the southern hemisphere 5, the longitude of which is equal to the value of the longitude of ascending node of the loop, the next question turn orbit, with the point of the ascending node of the orbit 12. Line orbit 11 will show on the map with the image of the southern hemisphere 3 route the second half of the considered orbits orbits (dotted line 11 in figure 1).

Thus, the line of the orbit 11 shows two parts of a map with images of the Northern and southern hemispheres 2 and 3 both parts of the route in question orbits orbit.

In the example images hemispheres intervals of longitude images hemispheres selected so that when both of the above builds, runs halves of orbits orbit, the user can directly use the values of the longitudes of the ascending nodes of the orbits of the orbit, defined in the interval"0°÷360°".

In General, images of the Northern and southern hemispheres can be performed in any interval of longitude, covering a full hemisphere, i.e. the distance between the end points of the intervals in the and longitude is equal to or more than 360°. For example, the minimum image of each hemisphere can be done in one of two intervals of longitude: "0°÷360°or -180°÷180°corresponding to the two common scales of reference longitude. Presented in the example in figure 1 image of the hemispheres, each of which contains the image of one and a half full hemisphere, can be regarded as the maximum meaningful picture of the hemispheres: the use of larger images hemispheres does not give any new features to the tablet, thus complicating the tablet due to the elongation of the tape.

Describe the technical effect of the invention.

The size of the tablet in the direction perpendicular to the equator, characterized by the size in the direction of the tape and the plate with the image of the orbit. In the tablet-prototype this is the length of the lines of latitude maps of the earth's surface equal to the value of 2*S. In the proposed tablet size tape 1 and the plate 10 in the direction perpendicular to the equator, equal to the value of S, i.e. twice less than in the tablet prototype. Thus, the proposed device improves ergonomics of the tablet to select objects on earth observations from orbiting SPACECRAFT by reducing the size of the tablet on the tablet prototype in two times.

The technical result is achieved accounts the proposed local images of the Northern and southern hemispheres on a flexible tape 1, and also due to the introduction of the device providing movement of the tape 1 along the plate 10 technological shafts 15, which stretched the tape 1, and the proposed size of the tape 1 and the plate 10.

The tablet to select objects observations from orbiting spacecraft, including a flexible tape with a map of the earth's surface, installed over it semi-transparent plate with a picture of a half revolution of the orbit of the spacecraft between the ascending and descending nodes of the orbit and the device providing movement of the tape across the plate with two spaced and bonded in parallel between the shafts, while the tape is tight on the shaft can move along the line of the equator, characterized in that map the earth's surface is divided by the equator into two parts and on the tape sequentially placed part of the map depicting the Northern hemisphere and part of the card with the image of the southern hemisphere while the equator line of the map depicting the Northern hemisphere is a continuation of the line of the equator of the map with the image of the southern hemisphere, with the device providing movement of the tape along the plate introduced technological shafts placed in parallel between the first and second shafts, and the tape is stretched to the above-mentioned shafts and the newly introduced technology is Aly, and the size of the tape and the plate along the direction perpendicular to the equator, equal to the length of the lines of latitude of the map, showing one of the hemispheres.