Robinson 22 POH Section 1: General (10/27/22)

Question 1

R22 Dimensions (5 items)

Answer 1

• Width 76 inches (Approx. 6 feet)
• Length 345 inches (Approx. 30 feet)
• Height 107 inches (Approx. 9 feet)
• Blade diameter 25 ft, 2 inches
• Rotor blade diameter 42 inches (Approx. 3.5 feet)

Question 2

Describe the rotor

Answer 2

Semi-rigid, “free to teeter and cone, rigid in-plane”

Question 3

Describe the tail rotor

Answer 3

Free to teeter, rigid in-plane

Question 4

Describe the engine Beta (8 items)

Answer 4

O-320-B2C, Lycoming, 4 cylinder, horizontally opposed, direct drive, air cooled, carbureted, normally aspirated

Question 5

Describe the cooling system (2 items)

Answer 5

Direct drive, squirrel-cage blower

Question 6

Engine normal rating (BHP and RPM)

Answer 6

145 BHP and 2700 RPM

Question 7

5 min takeoff (BHP and RPM)

Answer 7

131 BHP and 2652 RPM

Question 8

Max. continuous (BHP and RPM)

Answer 8

124 BHP and 2652 RPM

Question 9

Datum location

Answer 9

100 inches forward of main rotor

Question 10

Brake Horsepower

Answer 10

Actual power output of the engine

Question 11

MCP

Answer 11

Maximum Continuous Power

Question 12

TOP

Answer 12

Takeoff Power

Question 13

Critical Altitude

Answer 13

Altitude at which full throttle produces maximum allowable power (MCP or TOP)

Question 14

Standard Empty Weight

Answer 14

Weight of standard helicopter including unusable fuel, full operating fluids, and full engine oil

Question 15

Basic Empty Weight

Answer 15

Standard empty weight plus weight of installed optional equipment

Question 16

Assuring that the helicopter is in airworthy condition is the _______________________

Answer 16

Responsibility of the owner

Question 17

Determining that the helicopter is safe for flight is the ____________________________

Answer 17

Responsibility of the pilot in command

Question 18

What does rigid in-plane mean?

Answer 18

It means that the blades are free to move up and down, but they are “rigid” in the plane of rotation meaning that they can’t lead and lag.

Question 19

What does teetering mean?

Answer 19

It means that the blades “teeter” like a see-saw would. If one goes up, the other goes down, in normal operation.

Question 20

What is the primary reason for derating a helicopter engine? (2 reasons)

Answer 20

Primary reason: To increase the altitude capability of the helicopter. If a 160 hp (O-320-B2C) is derated to 145 BHP, it will produce 145BHP all the way to the critical altitude.

Secondary reason: higher reliability and longer engine life.