Fuel Weight & Performance | Revised

Question 1

What is one USG in litres?

Answer 1

3.785kg

Question 2

One kilogram to pound?

Answer 2

2.2Ib

Question 3

One imperial gallon to litre?

Answer 3

4.54 Litre

Question 4

One imperial gallon to USG?

Answer 4

1.2 USG

Question 5

What is the weight of one litre of water in kg?

Answer 5

One litre of water = 1 kg

Question 6

What is the weight of one imperial gallon of water in pounds?

Answer 6

10 pounds

Question 7

What is the weight of one USG of water in pounds?

Answer 7

8.333 Pounds

Question 8

Define SG

Answer 8

Specific gravity is a ratio, it compares the weight of a volume of liquid to an equal volume of water.

Question 9

What is the SG of one litre of water?

Answer 9

One litre of water will have an SG of 1

Question 10

What is the specific gravity of avgas?

Answer 10

The SG of avgas is 0.74, meaning that it weight 0.74 of a kilogram.

Question 11

Define SFC

Answer 11

Specific fuel consumption, in the case of a piston-engined aeroplane, is defined as the fuel flow per unit of power and is usually expressed in terms of mass, kilograms per hour or pounds per hour.

Question 12

Define Specific Air Range

Answer 12

Specific air range is TAS / fuel flow, or fuel flow / TAS, in zero wind conditions. The distance is expressed in air nautical miles (ANM)

Question 13

Define Specific Ground Range

Answer 13

Specific ground range is GS / fuel flow, or fuel flow / GS, taking account of wind. The distance is expressed as ground nautical miles (GNM)