Chapter 28 - High speed flight

Question 1

How to work out the LSS

Answer 1

39 x square root of Temp in Kelvin = knots

Question 2

How to work out Mach Number

Answer 2

LSS

Question 3

Stall speed does what at high altitude and why

Answer 3

increases

compressibility

Question 4

Mfs is

Answer 4

Mach free stream

Question 5

Ml is

Answer 5

Mach local number

Question 6

What is Mcrit

Answer 6

Somewhere on the a/c Ml has reached mach 1

Question 7

x3 types of flow

Answer 7

Subsonic = less than mach 1
Sonic = exactly mach 1
supersonic = over mach 1

Question 8

What is the slow subsonic region up to

Answer 8

0.4 mach

Question 9

what is the transonic region

Answer 9

Mcrit to Mdet (depends on aircraft type for figures)

Question 10

What is the region for supersonic

Answer 10

everything is above Mdet

Question 11

A normal shockwave is what to the airflow and how big

Answer 11

perpendicular to the flow

0.0025 mm