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AE Orbital Mechanics Assessment (Part 3)

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Last updated 20 days ago
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Question 1
1.

Question 2
2.

What is the projection of a satellite's orbit onto the earth, represented in a 2D map called?

Question 3
3.

A satellite designed to take images to monitor the polar ice caps would have an inclination of ___ degrees.

Question 4
4.

Question 5
5.
Draggable itemarrow_right_altCorresponding Item
The point in the orbit of an object (such as a satellite) orbiting the earth that is at the greatest distance from the center of the earth.
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Inclination
The measure of how circular or elliptical an orbit is.
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Eccentricity
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Question 6
6.

Which orbital parameter must use a reference point in space, because an earth based reference point will move as the earth rotates?

Question 7
7.

Question 8
8.

An orbit with an inclination of 0 degrees is called:

Question 9
9.

An argument of perigee would be easiest to see in a picture of an orbit with which eccentricity?

Question 10
10.

This philosopher was the first to propose heliocentric theory.

Question 11
11.

This philosopher believed that everything rotates around the Earth.

Question 12
12.

To make the pictured ellipse more circular, you should move foci A and B _________.

Question 13
13.

Many of Kepler's theories were based on the documentation of this philosopher that he worked with for a short time.

Question 14
14.

Both size (semi-major axis and/or altitude) and eccentricity play an important role in determining the period of the orbit.

Question 15
15.

Question 16
16.

Label each ellipse with the correct eccentricities.

Draggable itemarrow_right_altCorresponding Item
A
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0
B
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0.7
C
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0.4
Question 17
17.

Who developed the Keplerian Element Set which describes the orbital parameters of satellites' orbits?

Question 18
18.

Question 19
19.

A circular orbit has an apogee roughly twice the altitude of its perigee.

Question 20
20.

Question 21
21.

Kepler has two different sets of laws of orbital motion. One set applies to planets orbiting the Sun, and the other set applies to man-made satellites orbiting the Earth.

Question 22
22.

Question 23
23.

All circles are ellipses and all ellipses are circles.

Question 24
24.

Question 25
25.

Question 26
26.

An object is moving slowest at apogee.

Question 27
27.

The Voyager 1 spacecraft was launched in 1977 to explore the solar system and beyond. In 2008, it was entering the region between our solar system and interstellar space known as the heliosheath. It is the furthest manmade object from the Eatch and it continuing its journey into the unknown. Based on what you have learned about orbital elements, the eccentricity of Voyager is greater than 1.

Question 28
28.

This scientist was the first to use a telescope to help prove heliocentric theory.

Question 29
29.

Which of the following missions would probably use a polar orbit?

Question 30
30.

A geostationary satellite is called such because it is a satellite that doesn't move.

Question 31
31.

There is only one specified altitude for LEO (low earth orbit) satellites.

Question 32
32.

Why is there a ring of satellites around the Earth's equator roughly 22,000 miles away form the Earth?

Question 33
33.

You have recently moved to Australia. You took your satellite TV dish with you. When you mount it to your new house, in which direction should it face?

Question 34
34.

The lunar missions were LEO orbits.

Question 35
35.

Russia uses the Molniya orbit frequently. Which of the following countries could also benefit from this type of orbit?

Question 36
36.

The country of Ecuador rests on the equator. Why would a geostationary satellite not be a good choice for a satellite to take images of Ecuador?

Question 37
37.

Groups of satellites in various orbits that work together to accomplish a mission are called constellations.

Question 38
38.
Draggable itemarrow_right_altCorresponding Item
Low Earth Orbit
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Short orbital period of approx 90 minutes
Geostationary
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Period equals one day
Molniya
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Highly inclined AND highly elliptical orbit
Polar
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Question 39
39.

A Sun-synchronous orbit is a special type of polar orbit.

Question 40
40.

Which of the following men was responsible for the Laws of motion and gravitation?

Question 41
41.

A satellite is: (Select all that apply)

Question 42
42.

This is the ONLY PARAMETER that determines the orbital period.

Question 43
43.

An orbit with an inclination of 90 degrees is called:

Question 44
44.

Kepler's First Law states that:

Question 45
45.

Kepler's Second Law of Planetary Motion states that "A line joining a planet and its star sweeps out equal areas during equal intervals of time." Using this information, if a satellite's orbit is not circular, which of the following are true?

The point in an orbit that is closest to the Earth.
semi-major axis
eccentricity
focal point
apogee
semi-minor axis
perigee
major axis
inclination
Right ascension of the ascending node
Eccentricity
Inclination
Ascending Projection
Ground trace
Projected orbit
75
10
A satellite crosses the equator in a northerly direction at 0 degrees longitude. On its next northerly pass over the equator it crosses at 23 degrees west longitude. How many minutes did it take this satellite to complete one orbit?
184
48
63
92
115
23
5.75
The "tilt" of the orbit relative to the equator.
Semi-Major Axis
Describes the size of an orbit. For circular orbits, altitude is often used in place of this term.
Apogee
The point in the orbit of an object (such as a satellite) orbiting the earth that is the closest to the center of the earth.
Perigee
Argument of Apogee
True Anomaly
Right ascension of the ascending node
Eccentricity
Inclination
Argument of Perigee
_________________ is the angle between the Earth’s equatorial plane and the
plane of the orbit. It describes the tilt of the orbit.
Eccentricity
Inclination
Angle of Apogee
Angle of Perigee
Sublimation
Eccentric Angle
Inclined Plane
Low Earth Orbit
Latitude
Geostationary Orbit
Equatorial Orbit
Polar Orbit
Ground trace
Nicolaus Copernicus
Tycho Brahe
Galileo
Copernicus
Kepler
Aristotle
Brahe
Newton
Tycho Brahe
Galileo Galilei
Which of the following orbital parameters describes the size and shape of the orbit?
Argument of Apogee
Argument of Perigee
Eccentricity
Point of Origin
True Anomaly
Right Ascension of the Ascending Node
Semi-Major Axis
Inclination
Focal Transference
Sir Isaac Newton
Aristotle
Label the position indicated with the A in the pictured orbit.

minor axis
focal point
eccentricity
perigee
major axis
inclination
apogee
center
What two details of a satellite's orbit can be determined from examining a ground trace?
Inclination
Eccentricity
Semi-Minor Axis
Perigee
Period
Semi-Major Axis

Apogee
Right Ascension of the Ascending Node
The value of which orbital parameter is 0 when the satellite is at its perigee point and 180 when the satellite is at apogee?
Argument of Apogee
Focal Transference
Semi-Major Axis
Eccentricity
Argument of Perigee
Right Ascension of the Ascending Node
Inclination
Point of Origin
True Anomaly
Which is NOT one of the six elements of the Keplerian element set?
Argument of Apogee
Eccentricity
Inclination
True Anomaly
Semi-Major Axis
Right Ascension of the Ascending Node
Argument of Perigee
What is the name of the "radii" labelled A in the pictured ellipse?

focal point
apogee
eccentricity
perigee
inclination
semi-minor axis
semi-major axis
Galileo Galilei
Sir Isaac Newton
Inclination of 90 degrees
Newton
Aristotle
Any lighter than air aircraft that leaves Earth's gravitational pull
A sun, moon, spacecraft or ISS
Any object in orbital motion
Eccentricity
Inclination
True anomaly
Semi-major axis
Argument of Perigee
RAAN
Ground trace
Equatorial Orbit
Low Earth Orbit
Geostationary Orbit
Polar Orbit
Latitude
the orbits of planets are ellipses with the sun at the center
the orbits of planets is a game of tag divided into ringed and unringed teams
the orbits of planets are ellipses with no set focal point
It travels faster the further it is from Earth
It travels faster at night
it is traveling at a uniform speed
It travels slower the closer it is to Earth
It travels slower the closer it is to the Sun
It travels faster the closer it is to Earth