L15 - Airworthiness Requirements. Aircraft Flying and Handling Qualities

Question 1

Define airworthiness

Answer 1

Airworthiness is the measure of an aircraft’s suitability for safe flight.

Question 2

Handling qualities are made up of what two categories?

Answer 2

Flying Qualities and External Factors

Question 3

Name some flying qualities?

Answer 3

Agility
Stability
Pilot interface
Safety anywhere

Question 4

Name some external factors that affect handling qualities?

Answer 4

Mission task element
Urgency level
Wind/Turbulence
Environment

Question 5

Which qualities deal with short term and seperately long term

Answer 5

Flying qualities - Long term tasks

Handling Qualities - Short term response

Question 6

What are the two types of airworthiness requirements?

Answer 6

Civil aircraft - CAA,FAA,JAA

Military Aircraft/Rotorcraft - Ministry of Defence

Question 7

What do flying qualities requirements depend on?

Answer 7

Aircraft Class
Flight Phase
Level of flying qualities

Question 8

What are the different aircraft classes?

Answer 8

Class 1 - Small, light aircraft, primary trainers
Class 2 - Medium weight, low-to-medium manoeuvrability aircraft, e.g. search and rescue, medium transport/ cargo, reconnaissance aircraft.
Class 3 - Large, heavy, low-to-medium maneuverability aircraft such as heavy transport airplanes, tankers, or bombers.
Class 4 - High maneuverability aircraft such as tactical reconnaissance, observation and trainer.

Question 9

What are the three flight phases?

Answer 9

Cat A - Non-terminal, rapid manoeuvering, accurate tracking (air to air combat, low level flying)
Cat B - Non-terminal, gradual manoeuvering, less precise tracking (climb, cruise, descent)
Cat C - Terminal, gradual manoeuvering, precise tracking (takeoff, approach, landing)

Question 10

What are the 3 levels of flying qualities?

Answer 10

Level 1 - Qualities are adequete for mission
Level 2 - adequete for mission but requires extra pilot workload
Level 3 - Degraded flying qualities (still controllable)

Question 11

What is the purpose of flight testing?

Answer 11

aircraft perfomrance analysis (all flight phases, stability, control, structures, certification)

Question 12

What does the prior information in flight testing include?

Answer 12

Rigid body equations of motion

aerodynamic and engine data

Question 13

What are Flight test manoeuvres?

Answer 13

They are designed to excite the dynamic respoinse of an aircraft.

Question 14

What are the various methods of testing?

Answer 14

Analytical models:

• Linearised
• Non linear

Experimental:

• Flight simulators
• Wind tunnel
• Real flight test

Question 15

What is the name of the scale for handling qualities?

Answer 15

The aggregated Cooper-Harper scale or the thumbprint scale.