midterm 2

Question 1

when and where did the first trans oceanic supersonic passenger flight took off

Answer 1

London Heathrow Airport in 1976

Question 2

flight that is faster than the speed of sound.

Answer 2

super sonic flight

Question 3

The ratio of an aircraft’s speed divided by the speed of sound is known

Answer 3

Mach number

Question 4

1. The Concorde cruised at about
   Mach ____when not over land. Some
   military aircraft fly at even higher supersonic speeds.

Answer 4

2.02 (roughly twice the speed of sound)

Question 5

Flight faster than Mach 5 is known as

Answer 5

Hypersonic

Question 6

moves. The
disturbance includes air flow around the aircraft as well as traveling pressure
waves that humans perceive as____

Answer 6

sound

Question 7

In subsonic flight, sound waves may be
emitted in

Answer 7

all directions

Question 8

In supersonic flight, because the aircraft is flying faster
than sound travels, all disturbances are

Answer 8

behind the aircraft

Question 9

Disadvantages of High-Speed Flights

Answer 9

Cost
Noise
Profitability

Question 10

how many Concorde were made

Answer 10

20

14 for british airways and air france
6 for prototypes and testing

Question 11

advantage of high speed flights

Answer 11

speed and range

Question 12

is the main attraction for supersonic flights
however due to air traffic constraints, a supersonic aircraft will not be able to
achieve meaningful time savings for flight less than 800 NM.

Answer 12

speed

Question 13

is caused by the desynchronization of the normal
sleep and wakefulness cycle of the body with local time. The problem presents
itself to travelers as lowered efficiency and malaise, the inability to sleep during
local sleeping hours after a journey and fatigue when one is re quired to be
alert. This problem is even more pressing for the crew who have to rest in an
allotted time so as to be fit to fly the aircraft again.

Answer 13

Circadian dysrhythmia

Question 14

HIGH SPEED FLIGHT LIMITATIONS

Answer 14

Circadian dysrhythmia
high altitude
Radiation

Question 15

4-in. diameter
hole would cause the cabin altitude to rise to

Answer 15

30000ft

Question 16

6-in. hole

Answer 16

42,500 ft

Question 17

8 in. diameter hole,

Answer 17

53,500 ft

Question 18

It has been estimated that an

average dosage of can be expected on transatlantic routes.

Answer 18

1-5 mrem/hr

Question 19

The International Commission on Radiation Dosage advises a limit of

Answer 19

5
rem/year

Question 20

trans siberian flight radiation

Answer 20

3.9 mrem per flight

Question 21

The intensity of the boom
will depend on the

Answer 21

size shape and weight of an aircraft

Question 21

a shock wave of pressure created by compression of sound waves
as the air is displaced by the airframe traveling at or above Mach 1.0.

Answer 21

sonic boom

Question 22

The Concorde was louder than the aircraft
meeting ICAO’s

Answer 22

stage 2 standards.,

Question 23

is used to refer to the shocks caused by the supersonic flight of
an aircraft.

Answer 23

sonic boom

Question 23

Newly designed aircraft certified after December 31, 2017, must meet US Stage 5 standards which requires aircraft to be at least 7 dB quieter than required by Stage 4 noise standards or 17 dB less than required by the Stage 3 standards cumulatively across three noise measurements (flyover, sideline, approach). As a comparison to Stage 2 compliant aircrafts, the sound produced by Stage 5 compliant aircrafts are on the order of one- fourth the sound intensity of aircraft operating on Stage 2 standards.

Question 24

explain sonic boom relation 1. Aircraft weight, shape and length

Answer 24

The bigger the aircraft is, the more air molecules push aside. Thus, a big aircraft will produce a stronger sonic boom.

Question 25

Aircraft altitude

Answer 25

The altitude of the aircraft and the strength of the sonic boom are reciprocal. As the altitude increases, the strength of the sonic boom decreases.

Question 26

Aircraft maneuvers

Answer 26

Maneuvers such as pushovers, S-turns and accelerating can amplify the intensity of the shock wave. Hills, valleys and other topographic features can create multiple reflections of shock waves thus affecting intensity.

Question 27

Location in sonic boom carpet

Answer 27

Special topographic features in each area such as mountains, hills and valleys can create multiple reflections of shock waves thus affecting intensity.