SAC Take Home Test

1.

1 point

In what situation would a single command sequence be valid for weeks to a few months.

Lengthy cruises/ Quiescent periods

Empty Space areas

Stall

Never

2.

1 point

When does DSN begin tracking the spacecraft?

Immediately after space craft landing

Immediately after space craft launch

Immediately before space craft launch

Immediately after space craft abort

3.

1 point

What is the biggest factor that affect's a Spaceship's trajectory?

Gravity

Trajectory

Acceleration

Momentum

4.

1 point

Newton's First Law

The chage of motion (linear momentum) is proportional to the force impressed and is made in the firection of the straight line in which that force is impressed.

Every body continues in a state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.

Inertia

To every action there is always an equal and opposite reaction; or, the mutual actions of two bodies upon each other are always directions.

5.

1 point

What determines the availability of emergency landing sites?

Mission itself

Weather

Political Situtations within certain regions

All of the above

6.

1 point

What is the best method of space travel available to us now?

Nuclear propulsion

Nuclear Rockets

Nuclear Fusion

Nuclear Fission

7.

1 point

What is a major advantage of using solar sails for transportation?

It would eject ions, gas or plasma to accelerate the craft

They can reach very high speeds

The craft will not accelerate once it is too far away from The sun

It would require little fuel compared to chemical engines

8.

1 point

How does the Far Encounter Phase begin?

It begins when the (NE) phase has finished and the spacecraft is leaving.

When you encounter the Far

It begins when the full disc of a planet can no longer fit within the field of view of the instruments.

This is the period of closest approach. It's when there are intensely active observations w/all of the spacecraft's science experiments including on-board instruments and radio science investigations.

9.

1 point

Which mission required an Abort to Orbit (ATO)?

STS-49-F

STS-51-D

STS-31-S

STS-51-F

10.

1 point

What For what reasons are we unlikely to use chemical rockets in the future?

Do not work

Too dangerous

Because they are inefficient, expensive and there is not enough fuel on earth

Because Katie said so

11.

1 point

Which is inherently more risky? Planned sequences or real-time commands.

Real time commands because there is no practice or simulations to test out the sequence beforehand.

Neither

Planned Sequences

Both

12.

1 point

Why would we not be able to use nuclear propulsion in outer space for travel?

Jay's Treaty

The Partial Test Ban Treaty from 1963, which banned nuclear detonation in space

Common Safety Act of UN

Treaty of Paris 1763

13.

1 point

What should teams focus on when practicing dealing with an emergency?

Mission Abort

Behavior while handling the emergency

Main engine failure before/during launch

Mission Control

14.

1 point

Who flew the first liquid-powered rocket?

England

Robert Goddard

Germany

Werner Von Braun

15.

1 point

What is the Current epoch, and what was the last epoch?
(current epoch, previous epoch)

B1950.0 ; J2000.0

J2000.0 ; B1950.0

J2016.0 ; B2000.0

B2000.0 ; J2016.0

16.

1 point

Where would the C-130 aircraft carrying medical personnel and supplies go in preparation for a Transoceanic Abort Landing (TAL)?

Zarazoga

Zarazoga, Istres, or both sites

Istres

Atlantic

17.

1 point

What are the benefits of using a warp drive for space travel?

None

It would allow us to ride on a wave of space-time

We would not be limited by the speed of light

Impossible

18.

1 point

What is Kepler's Second Law?

The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit

orbit of every planet is an ellipse with the sun at one of the two foci

sum of its distance from two fixed points (foci) is constant

a line joining a planet and the Sun sweeps out equal areas during equal intervals of a time

19.

1 point

What are the three types of boosters for launch vehicles?

Hydrogen, Nitrogen, Nuclear

Hydrogen, Liquid, Solid

Solid, Liquid, Chemical

Solid, Liquid, and Hybrid

20.

1 point

What is the most famous American flyby operation?

Apollo 12

The Voyager

Apollo 13

Saturn IV

21.

1 point

How many instances has the RSLS been required?

None

1

3

5

22.

1 point

What mode of transportation could allow us to go faster than the speed of light?

God's Blessing

Loopholes

Black Holes

Jump Continiums

23.

1 point

Who first used gunpowder?

Sumerians

Chinese

Babylonians

Japanese

24.

1 point

Which European nation was the first to use rockets in their military?

England

France

USA

Germany

25.

1 point

Highest point of altitude in an elliptical orbit

perihelion

apogee

aphelion

perigee

26.

1 point

What is the fourth type of navigational data?

distance

range

optical navigation

spacial

27.

1 point

Which one of Newton's law describes why planets stay in motion

First

Third

Fourth

Second

28.

1 point

Which launch vehicle has proven to be one of the most reliable launch vehicle to date in terms of how many times it has been used?

Soyuz ELV

Apollo Series

Saturn Series

Voyager

29.

1 point

What is telemetry?

Analyzing a spacecraft to determine its health.

Real time commands because there is no practice or simulations to test out the sequence beforehand.

It stands for Trajectory Correction Maneuvers used to fine tune their trajectory.

It is a list given to the Ace, so he knows what is going to happen, that way if something happens he is able to figure out if it was planned or not.

30.

1 point

What is the Chandler wobble?

caused by fluid motions in Earth's mantle and on the surface.

free nutation with a period of about 435 days

refers to mean equator and equinox of year 2000, nominally January 1st 12:00 hours (UT)

a small nodding motion with a period of 18.6 years and an amplitude of 9.2 arc seconds

31.

1 point

Was the Return to Launch Site (RTLS) mission abort ever required? If so, with which mission?

Yes, Apollo 13

Katie

Maybe

No

32.

1 point

What was used as the original fuel for rockets?

Gunpowder

CO2

Coal

Ethanol

33.

1 point

What does an Ace do when an anomaly presents itself?

He has to clear up any false- flags then follow the pre-planned anomaly response program for the situation.

It stands for Beginning of Track, Dss's transmitter comes on, and red rotating beacons illuminate to show that microwaves are present.

When the DSS14 Connection Controller sends directions over SPC LAN directly

It is a list given to the Ace, so he knows what is going to happen, that way if something happens he is able to figure out if it was planned or no

34.

1 point

What is considered mission completion?

The mission is completed when mission is completed bruh

Flight members don't take off

Flight members have gathered enough data to meet or exceed primary objective

Flight members return safely

35.

1 point

How would an ion drive work?

Nuclear bombs are dropped out the back and detonated, pushing a pusher plate, moving the craft forwards

It would eject ions, gas or plasma to accelerate the craft

It would only work in the vacuum of space and it would not be very fast

It would require little fuel compared to chemical engines

36.

1 point

What is eccentricity of a circle?

0

none

1

Constant

37.

1 point

Should I study harder and make sure we get to states?

Studying....what's that?

Of course Jens! I need to read the manuel once a week like you said!

Nah, I'm good at studying I can do it the final week

I have homework and projects Jens, I can't priortize SAC

38.

1 point

What is the Ace, and generally what are their qualifications.

He/She is the single point of contact between entire flight team. They're usually seasoned pilot or astronaut.

They are analyzing a spacecraft to determine its health.

Mission Control, communication and control the team from Earth

The Connection

39.

1 point

What type of engine would be the most efficient?

The antimatter engine

Nuclear Propulsion

It would provide long-term acceleration and would not require a large fuel supply to be carried

Break Caliper

40.

1 point

What are some drawbacks to nuclear propulsion?

It would provide long-term acceleration and would not require a large fuel supply to be carried

It is relatively cheap and proven, and a craft could reach 12% the speed of light

Nuclear fallout and having lots of niclear bombs on the spacecraft, as well as erosion to the pusher plate

Nuclear bombs are dropped out the back and detonated, pushing a pusher plate, moving the craft forwards

41.

1 point

What is the common center of mass that two objects revolve around?

Singularity

Katie

Centripetal Center

Barycenter

42.

1 point

What was the launch vehicle that was used in the Apollo program?

Apollo 12

Apollo 13

Saturn V

Voyager

43.

1 point

What is an occultation?

Unique opportunities to conduct scientific experiments.

The time where ground systems upgrades and tests may be conducted.

It comes from the engineers responsible for spacecraft subsystems.

It helps provide a coherent downlink when the uplink from DSN passes behind a planet.

44.

1 point

What is the most important element of orbital flight?

Gravity

Centripetal Acceleration

Inertia

Momentum

45.

1 point

What was the original goal of Voyager 2? How was the mission extended?

Observe Jupiter and Saturn, but later collected data on Uranus and Neptune

Flight members have gathered enough data to meet or exceed primary objective

Continue mapping the surface of Venus to over 99% OR Apply aerobraking to attain Venusian orbit and complete low-latitude gravity survey

Sun sensors can no longer detect the sun OR RTGs fall below a usable level OR hydrazine is depleted and three-axis stabilization fails

46.

1 point

Who wrote the first paper to take the warp drive seriously?

Albert Einstein

Miguel Alcubierre

Robert Goddard

Robert Millikan

47.

1 point

What is the time window for a RSLS abort?

T-10.0 seconds to T-0 seconds

T-0 seconds to T-10.0 seconds

T-0 seconds to T-6.6 seconds

T-6.6 seconds to T-0 seconds

48.

1 point

How far in advance do the DSN negotiate tracking requirements and schedules?

years or even centuries

Weeks or even days

Months or even Months

Months or even years.

49.

1 point

What simple "machine" was invented in Newton's Principia Mathematica

Gravitation Cannon

Free Fall

Newton's Cannon

Newton's Machine

50.

1 point

Who is credited with the development of the A-4, A.K.A the V-2 rocket?

Albert Einstein

Confuscious

Werner Von Braun

Robert Goddard