PC1

Question 1

Newton’s First Law states that an object either remains at rest or continues to move at a constant velocity unless?

Acted upon by an external force

Question 2

Newton’s Second Law states that the rate of change of momentum is proportional to the (Force) impressed and is in the (Same) direction as that force

Question 3

Newton’s Third Law states that to every action there is a/an (opposed) and (Equal) reaction

Question 4

newton’s law of universal gravitation states that any two bodies attract one another with a force proportional to the product of their masses and inversely proportional to the square of what?

Distance between them

Question 5

What is the most commonly used orbital regime?

LEO

Question 6

What orbit has a near polar inclination, has a retrograde motion, and allows a satellite to pass over a target at the same time a day?

SSO

Question 7

Which reference frame is used to describe orbits, defined classical orbital elements, and is considered “non-rotating?

ECI

Question 8

Which reference frame is used to describe ground tracks, the path of satellite travels relative to the Earth’s surface, and is considered “rotating” with earth?

ECEF

Question 9

The RIC reference frame is best use so we can describe what?

Motion from an individual satellite perspective

Question 10

Which reference frame is used to describe motion from an individual satellites perspective?

RIC

Question 11

With Kepler‘s second law being applied to the picture in the document, if a satellite takes six hours to travel arc A, how long does it take to travel arc B, given that areas A and B are equal?

Exactly 6 hours

Question 12

Kepler’s second law states that the radius vector sweeps out equal areas and equal time, why does this happen?

Satellites travel faster at Perigee and slower at Apogee

Question 13

Kepler’s third law states (The period of the orbit square is proportional to the semi major axis cubed)

Question 14

Semi – major axis (a), describes, which characteristic of an orbit?

Size

Question 15

The greater the energy of an orbit, the larger the ( Semi-Major Axis)

Question 16

Which type of orbit has eccentricity >1?

Hyperbole

Question 17

The inclination of a satellite orbiting earth is measured off of what?

Equatorial Plane

Question 18

Which characteristic of an orbit is described by its eccentricity?

SHAPE

Question 19

Which COE describes the twist of an orbit?

RAAN

Question 20

0 degrees less than or equal to i < 90 degrees describes which type of orbit?

PROGRADE

Question 21

Argument of perigee is measured from the (ascending Node) to (Perigee)

Question 22

RAAN is measured from (Vernal Equinox) to (Ascending Node)

Question 23

Which COE describes location of a satellite in an orbit?

True Anomoly

Question 24

Which COE describes the orientation of an orbit within the orbital plane?

Argument of Perigee

Question 25

What is the true anomaly of a satellite describing? Location

Question 26

The largest perturbing force present for near Earth objects is the mass and shape of the? Earth

Question 27

Which two COE’s are affected by the J2 effect? RAAN & Argument of Perigee

Question 28

Which statement about Nodal Regression is true? Retrograde will precess East

Question 29

Aspidal Rotation causes which COE to change overtime? Argument of Perigee

Question 30

Which statement about Nodal Regression is true? The Larger the Semi Major Axis, the smaller the effects of Nodal Regression

Question 31

Satellites in HEO orbit inclined at 63.4° will not experience what? Aspidal Rotation, keeping the Argument of Perigee stationary

Question 32

Gravity Wells will have the greatest effect on satellites in which orbit? GEO

Question 33

Overtime GEO satellites will be pulled towards longitudinal sub-points due to Mass asymmetry of the Earth

Question 34

Third body effects allow for the existence of what? Lagrange points

Question 35

Third body effects have the greatest effect on satellites in which orbit? GEO

Question 36

Atmospheric drag will affect what two COE’s Semi Major Axis & Eccentricity

Question 37

Atmospheric drag will have the greatest effect on satellites with which characteristics? Low mass high surface area

Question 38

For a direct launch, a space launch complex latitude must be (Less than or equal to) the desired orbit inclination?

Question 39

earths rotation provides an initial velocity to any satellite launched into what type of orbit? Prograde

Question 40

Launch time will determine the (RAAN) of the final orbit

Question 41

For a launch site with a latitude greater than the satellites desired orbit, inclination there are (zero) direct launch opportunities?