The aircraft, un-useable fuel. No pax,pilots or baggage
The absolute empty weight of an aircraft, cargo container etc.
Unusable fuel and undrainable oil.
It's not so much "needed" as it is a physical consequence. The empty weight is the weight of the aircraft itself - without fuel, crew, passengers, cargo or weapons.
Gross weight (Empty weight) of the F-14 is 43,735 lb.
The Gross Weight (Empty weight) of an X-15 is 14,600 lb.
The A380-800's empty weight is 276,800 kg (610,000 lb), and the A380-800Freighter's empty weight is 252,200 kg (556,000 lb).
If the cg is not with in range the airplane will crash.
855 lbs Empty weight (with oil) Reference Source: Company Website athttp://www.robinsonheli.com/r22main.htm
DOW (Dry Operating Weight) in aviation refers to the weight of an aircraft when it is empty and without any fuel or payload. It includes the weight of the structure, systems, equipment, and furnishings of the aircraft. DOW is used to calculate the aircraft's performance, fuel calculations, and maximum payload capacity.
Well, first you will need to put the body of the aircraft inside a wind tunnel capable of at least 200 mph wind, see how many pounds of lift it creates. Depending on how much lift there is will determine how much weight it can take off with. maximum take off weight is calculated using the aircrafts basic empty weight and adding the weight of fuel, passengers, and cargo. this should be found in your POH (pilot operating handbook). once you have calculated the weight of the amount of fuel you will need, passengers and where they will be sitting, and the weight of your cargo, you should refer to your weight&balance charts.
Basic empty weight 667kgs. Max take off weight 1043 kgs
There is no weight in an empty balloon. Empty balloons will not stay on the ground long enough to have any real weight.