FTT 122 Week 6 Quiz

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School

Coastal Carolina Community College *

*We aren’t endorsed by this school

Course

122

Subject

Aerospace Engineering

Date

Apr 3, 2024

Type

docx

Pages

Uploaded by Maddogmedina

Question at position 1 1 5 points Question 1 is unpinned. Click to pin. Question at position 1 The "transonic problem" refers to the moment when a projectile spins too fast and catastrophically separates into the individual base materials. The "transonic problem" refers to the moment when a projectile spins too fast and catastrophically separates into the individual base materials. True False Question at position 2 2 5 points Question 2 is unpinned. Click to pin. Question at position 2 Of all of the forces acting upon the projectile’s flight, _______________ and _______________are the greatest variables. Of all of the forces acting upon the projectile’s flight, _______________ and _______________are the greatest variables. Mass and Gravity The Earth's Rotation and Altitude Air and Wind Humidity and Temperature Question at position 3 3 5 points Question 3 is unpinned. Click to pin. Question at position 3

Regardless if you are shooting uphill or downhill, you will always want to hold _____________ for the correct point of impact. Regardless if you are shooting uphill or downhill, you will always want to hold _____________ for the correct point of impact. High Low Question at position 4 4 5 points Question 4 is unpinned. Click to pin. Question at position 4 Gravity acts upon all things at a rate of ________________________. Gravity acts upon all things at a rate of ________________________. 3.2174 Fps/S 16.08 Fps/S 32.174 Fps/S 321.74 Fps/S Question at position 5 5 5 points Question 5 is unpinned. Click to pin. Question at position 5 Humid air is __________________ dense than dry air. Humid air is __________________ dense than dry air. Greater Substantial More Less Question at position 6 6

5 points Question 6 is unpinned. Click to pin. Question at position 6 Air at sea level is __________________ dense than air at 5,000 feet above sea level. Air at sea level is __________________ dense than air at 5,000 feet above sea level. Less More Question at position 7 7 5 points Question 7 is unpinned. Click to pin. Question at position 7 The drift caused by the rotation of the projectile is also known as _____________________. The drift caused by the rotation of the projectile is also known as _____________________. Spin drift Snow drift Coriolis drift Eotvos drift Question at position 8 8 5 points Question 8 is unpinned. Click to pin. Question at position 8 Two projectiles, one dropped and one fired (level with the Earth’s surface) from the same height, will both hit the ground at the exact same time.

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Two projectiles, one dropped and one fired (level with the Earth’s surface) from the same height, will both hit the ground at the exact same time. True False Question at position 9 9 5 points Question 9 is unpinned. Click to pin. Question at position 9 Transitional ballistics is the study of___________________________. Transitional ballistics is the study of___________________________. The projectile impacting the target. The projectile's path from the end of the muzzle blast until it impacts the target. The projectile's path from muzzle until it clears the "muzzle blast". The projectile's path from ignition until it leaves the barrel. Question at position 10 10 5 points Question 10 is unpinned. Click to pin. Question at position 10 A headwind: A headwind: Blows against the roof of the projectile, slowing it. Blows against the nose of the projectile, slowing it. Blows against the tail of the projectile, accelerating it. Blows against the side of the projectile, accelerating it. Question at position 11 11

5 points Question 11 is unpinned. Click to pin. Question at position 11 A full value wind means: A full value wind means: The wind is working parallel to the projectile's path. The wind is working at an angle to the projectile's path. The wind is working 90 degrees directly to the projectile's path. Question at position 12 12 5 points Question 12 is unpinned. Click to pin. Question at position 12 A flash hider mitigates flash by _______________________. A flash hider mitigates flash by _______________________. Sealing the muzzle once the bullet leaves. Redirecting the flash away from the enemy's eye. Encasing the flash in a chamber. Rapidly mixing the gas exiting the muzzle with the surrounding atmosphere. Question at position 13 13 5 points Question 13 is unpinned. Click to pin. Question at position 13 A projectile with a greater __________________________ can be used to create a flatter trajectory. A projectile with a greater __________________________ can be used to create a flatter trajectory.

Sectional density Ballistic coefficient Mass Diameter Question at position 14 14 5 points Question 14 is unpinned. Click to pin. Question at position 14 A projectile fired to the east with one second of flight time will hit roughly 2” _________________ due to the Eotvos effect. A projectile fired to the east with one second of flight time will hit roughly 2” _________________ due to the Eotvos effect. Low High Question at position 15 15 5 points Question 15 is unpinned. Click to pin. Question at position 15 A suppressor mitigates sound by _______________________________________. A suppressor mitigates sound by _______________________________________. Trapping the exiting gasses and redirecting them back into the barrel and action. Making a "gas bubble" around the projectile so that the projectile cannot break the sound barrier. Trapping the exiting gasses, slowing them and allowing them to cool before exiting the suppressor. Speeding the gasses up to initially outpace the exiting projectile.

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Question at position 16 16 5 points Question 16 is unpinned. Click to pin. Question at position 16 If you are shooting in the Northern Hemisphere, the Coriolis effect will always cause a _______________ deflection. If you are shooting in the Northern Hemisphere, the Coriolis effect will always cause a _______________ deflection. Lefthand Righthand Question at position 17 17 5 points Question 17 is unpinned. Click to pin. Question at position 17 What are the three types of recoil? (select all that apply) What are the three types of recoil? (select all that apply) Hidden Recoil Vibrating Recoil Surmountable Recoil Free Recoil Felt Recoil Recoil Impulse Question at position 18 18 5 points Question 18 is unpinned. Click to pin. Question at position 18

Muzzle brakes and compensators work by ___________________________________. Muzzle brakes and compensators work by ___________________________________. Redirecting the energy of the exiting gases in such a way that causes them to push forward on the baffles of the compensator to compensate for felt recoil while the gases propelled upward mitigate muzzle rise. Redirecting gasses exiting the muzzle to compensate for recoil and muzzle rise, which typically imparts energy forward and upward. Redirecting gasses exiting the muzzle to compensate for recoil and muzzle rise, which typically imparts energy backward and downward. Redirecting gasses exiting the muzzle to compensate for recoil and muzzle rise, which typically imparts energy forward and downward. Question at position 19 19 5 points Question 19 is unpinned. Click to pin. Question at position 19 Hotter air is ______________ dense, which means the projectile will experience ______________ drag. Hotter air is ______________ dense, which means the projectile will experience ______________ drag. More, More More, Less Less, More Less, Less Question at position 20 20 5 points Question 20 is unpinned. Click to pin.

Question at position 20 Pressure on the nose of the projectile, parallel to its rotational axis, is known as _____________, while pressure acting upon any part of the projectile not in-line (parallel) with its rotational axis is known as _________________________. Pressure on the nose of the projectile, parallel to its rotational axis, is known as _____________, while pressure acting upon any part of the projectile not in-line (parallel) with its rotational axis is known as _________________________. Drag and Lift Yaw and Roll Lift and Drag Precession and Pitching Submit

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FTT 122 Week 6 Quiz

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