WEIGHT AND CENTER OF GRAVITY DETERMINATION FOR THE AIRPLANE
INTRODUCTION : ...
Weight-shift-control aircraft - 14 CFR 1.1
Weight-shift-control aircraft means a powered aircraft with a framed pivoting wing and a fuselage controllable only in pitch and roll by the pilot's ability to change the aircraft's center of gravity ...
C. weight and balance and flight performance
The flight characteristics of an airplane at gross weight with the C.G. very near its most aft limits are very different from those of the same airplane lightly loaded.
Weight and Mass
Snippets From Wikipedia: In the physical sciences, weight is a measurement of the gravitational force acting on an object.
In reality, it isn't safe to assume that lift always matches weight, or thrust exactly matches drag.
Weight on Wheels (WOW): Indication of whether the aircraft has weight on its wheels, meaning airborne or on the ground; weight on wheels can be detected by a sensor on the wheels, ...
weight - The force of gravity acting on an object. The weight force pulls an aircraft toward the Earth and must be overcome by a combination of lift and thrust.
Whiskey - Designator for the letter "W" in the International Phonetic Alphabet.
Weight
If our weight requires the use of a larger aircraft such as a Piper Pa28 or Cessna C172 the cost per flight hour will be more.
Weight: Statistics show that the empty weight of most aircraft is close to 60 percent of the load carried (passengers and fuel).
Weight: The relative mass of a body or the relative reaction on a body caused by some attractive force such as gravity.
Wetted Area: In aerodynamics, the total area of an aeroplane or airship exposed to airflow.
A-WEIGHTED SOUND LEVEL (dBA) - The ear does not respond equally to different frequencies of sound. It is less efficient at low and high frequencies than it is at medium or speech range frequencies.
A-weighted sound (dBA) - A system for measuring sound energy that is designed to represent the response of the human ear to sound.
The weights, please
Jensen's no-frills cruiser has an empty weight of 1,399 and a useful load of 901 pounds. With a full fuel load of 234 pounds, or 39 gallons, there are 667 pounds left over for people, baggage, and flying supplies.
DRY WEIGHT - The weight of an engine exclusive of any fuel, oil, and coolant.
Empty weight - the weight of the structure of an aircraft, its powerplant, and all of the fixed equipment.
Weight carried by an aeroplane to increase the Wing Loading or adjust the centre of gravity.
Ball Link
Connection using a ball, and a link which rotates on the ball. Used to connect the servo to a control surface or lever.
Weight and Balance gives us general procedures for weighing the aircraft, information as to the longitudinal and lateral stations of important places in the aircraft (such as seats, baggage compartments, fuel tanks).
Weight-off-Wheels, indicates aircraft is off ground since lift off
WONW
Weight-on-Wheels, indicates aircraft is on ground since touch down ...
Weight/Mass
Standard unit is the kilogram (kg).
Will have to convert fuel quantity to weight (litres to kilograms) for performance calculations.
Weight and balance data
Remove the control wheel lock
Check that the ignition switch is off and keys are not in the ignition.
Weight in Tensile
Material - cubic feet, strength per Compression
pounds sq. in strength per sq. in pounds pounds
Spruce 27 7,900 4,300
Aluminum 162 15,000 12,000
Brass (sheet) 510 20,000 12,000
Steel (tool) 490 100,000 60,000 ...
The weight of the luggage the airline allows the traveller to check-in. Economy ticket holders are usually allowed 20kg whilst business and first class passengers able to take between 30-40kg depending on the airline.
The weight of a helicopter is divided evenly between the rotor blades on the main rotor system. If the helicopter weighs 5000 lbs and it has two blades, then each blade must be able to support 2500 lbs and so on.
Low weight / high strength relationship;
Corrosion resistance, especially with newer alloys and modern primers;
Low cost and widespread availability;
Proven durability, and resistance to sun and moisture exposure ...
WAT: Weight, Altitude, Temperature. Variables that affect takeoff performance.
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Gross Weight - 1. A 350-pound pilot (also see "Split S"). 2. Maximum permissible takeoff weight plus two suitcases, 10 cans of oil, four sleeping bags, four rifles, eight cases of beer, and the groceries.
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LANDING WEIGHT - Normal maximum weight at which an aircraft is permitted to land.
LANDING WIRES - External bracing wires, usually of streamline section, which support the wings when the aircraft is on the ground.
Zero Fuel Weight - The weight of an airplane minus usable fuel
Zulu - Universal Co-ordinated Time
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First lightweight aircraft receiver tested in England
1916
First heavy bomber, the Handley Page, goes into action ...
It bears the weight of the engine and absorbs torque
It provides lateral support to prevent oscillations in the vertical axis.
It maintains parallelism between the engine and prop shaft.
MAXIMUM GROSS WEIGHT (TAKE-OFF). The total weight of the aircraft when it is completely loaded for the mission. This is operating weight plus fuel, cargo, and passengers.
Additional fuel weight also reduces the diesel's payload. Diesel engines were theoretically developed to burn diesel fuel (big surprise), but most SMA or Thielert-powered airplanes will probably never do so, which, as it turns out, is just as well.
Maximum landing weight
MNPS
Minimum Navigation Performance Specification ...
All Cargo Landed Weight Report
Identifies total aircraft landed weight of airlines that are strictly all cargo (freighter), no passengers, and "other" airlines that have cargo in the belly of the aircraft.
Full Fuel Payload - The amount of weight that the aircraft can carry with a full fuel load. This weight is calculated by subtracting the weight of the fuel load (useable fuel quantity x 6 lbs/gal) from the published useful load.
This density is used to compute the weight and Cg of your kite and the sag of the control line. For each part you can Specify your own material density by making this selection on the drop menu.
Despite its size and weight, the F.2A could maneuver quite well, and was an opponent treated with a healthy respect by enemy seaplane fighters. By various improvisations some Felixstowe F.
'The following observations upon the wonderful difference in the weight of some birds, with their apparent means of supporting it in their flight, may tend to remove some prejudices against my plan from the minds of some of my readers.
Weight, lift, thrust and drag are the acting forces on an airplane. Assuming a straight and level flight, lift must be equal to weight and drag must be equal to thrust. If this equilibrium is violated, i.e.
Basic Operating Weight (BOW)
Empty weight typically equipped + unusable fuel and trapped liquids + 2 pilots (400 lbs.) + supplies.
BCD - Binary coded decimal.
Beam width - The included angle of a weather radar interrogation signal.
Since the light jets are of such little weight and can fly at high speeds and altitudes, its fuel consumption is less. The most expensive part of a flight for a jet is usually the taxi, takeoff, and climb times to cruise altitude.
Occasionally, an aircraft will carry more fuel than is needed for a particular flight either because fuel is more expensive at an intermediate stop, or because 'ballast' is required to provide correct weight and balance.
Early operations were complicated by lack of spares and ground facilities while ramps and taxiways deteriorated under the weight of the aircraft. The fuel system was prone to leaks and icing, and bombing and fire control computers were unreliable.
Wing Loading This is the amount of weight per square foot that has to be overcome to provide lift. It is normally expressed in ounces per square foot.
Some of the factors affecting VR and V2 are the weight of the aircraft, the air temperature and the altitude of the airport. The heavier the aircraft, the more lift, and thus speed is needed to get it off the ground.
Amount of coning depends on RPM, gross weight, and G-Forces experienced during flight. If RPM is held constant, coning increases as gross weight and G-force increase.
Payload: Revenue passengers and/or cargo, or more specifically their combined weight.
PIREP: Pilot report. Weather observations reported by a pilot in flight.
Dynamic instability may be prevented by an even distribution of weight inside the
fuselage, avoiding too much weight concentration at the extremities or at the CG.
Also, control surfaces' max throws may affect the flight stability, since a too much ...
Lilienthal's technique for con-trolling the equilibrium of his gliders was to shift the weight of his body, a flawed procedure that resulted in his death in 1896.
Major Repair: A repair (1) hat, if improperly done, might appreciably affect weight, balance, structural strength, performance, power plant operation, flight characteristics, or other qualities affecting airworthiness; ...
Centre of Gravity The point in the aircraft through which the sum of the weights of the parts which make up the aircraft may be assumed to pass whatever the attitude of the aircraft.
"Winning the Budgie ahead of long established heavy weights easyJet and Virgin Blue, among others, has again proved that South Africa compares favourably against best practice global benchmarks," said Antoncich.
load factor
The ratio of a specified load to the total weight of the aircraft. The specified load is expressed in terms of any of the following: aerodynamic forces, inertia forces, or ground or water reactions ...
Attach some coins or modelling clay to the nose of the glider to add some weight. This will improve both the length of flight and the trajectory.
Tips & Warnings
Be careful with the craft knife as the blade is incredibly sharp.
USEFUL LOAD - Volumetric capacity of the aircraft, disregarding weight.
WAC CHART - Directions to the WAC barracks.
YANKEE - Any pilot who has to ask New Orleans tower to "Say again".
Ultralight Pilot: An oxymoron.
Useful Load: Volumetric capacity of the aircraft, disregarding weight of cargo.
Up: A chant used by pilots taking off from Colorado Springs, who want to discover the meaning of life.
Aircraft of more than 12,500 pounds, maximum certificated takeoff weight.
Maintenance operational check (MOC) ...
VERY LIGHT JETS (VLJ) Newly emerging class of small jet aircraft approved for single-pilot operation with a maximum take-off weight of under 10,000 lb (4,540 kg). Typical capacity 3-7 passengers.
The recommended speed contained in aircraft manuals used by pilots when making an approach to landing. This speed will vary for different segments of an approach as well as for aircraft weight and configuration.
Apron ...
Hand luggage remains pretty much generic: one piece per passenger, restricted in size (especially for short haul flights), and up to 8kg in weight.
 See also: Aircraft, Flight, Pilot, Aviation, Speed
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