RV-6 Weight and Balance Calculator

Enter weights, arms, fuel, and baggage data. Check total moment and center of gravity quickly. Confirm limits with aircraft documents before flight planning today.

Calculator Form

This tool is for planning and education. Use the aircraft weighing report and operating limits for real decisions.

Formula Used

Moment = Weight × Arm

Total weight = Sum of all station weights

Total moment = Sum of all station moments

Center of gravity = Total moment ÷ Total weight

Fuel weight = Fuel gallons × Fuel density

Landing fuel = Fuel onboard - Taxi fuel - Trip fuel burn

The calculator checks the entered gross weight, landing weight, CG range, fuel capacity, reserve target, baggage limit, and aerobatic reference values.

How to Use This Calculator

  1. Enter the empty weight and empty arm from the aircraft record.
  2. Enter pilot, passenger, baggage, fuel, and other items.
  3. Confirm each arm value from your aircraft documents.
  4. Enter limits for gross weight, CG range, fuel, and baggage.
  5. Press the calculate button.
  6. Review takeoff and landing CG results.
  7. Download CSV or PDF reports if needed.

Example Data Table

Item Weight Arm Moment
Empty aircraft 965 lb 69.06 in 66643 lb-in
Fuel, 38 gallons 228 lb 70.00 in 15960 lb-in
Pilot 180 lb 87.40 in 15732 lb-in
Passenger 180 lb 87.40 in 15732 lb-in
Baggage 97 lb 117.00 in 11349 lb-in
Total 1650 lb 76.00 in CG 125416 lb-in

RV-6 Weight and Balance Overview

An RV-6 weight and balance check is a physics problem. Each load has weight. Each load also has an arm. The arm is the distance from the chosen datum. Weight times arm creates moment. The aircraft center of gravity is total moment divided by total weight. This calculator follows that process.

Why Accurate Inputs Matter

No two RV-6 aircraft are identical. Builders choose engines, props, paint, panels, interiors, and batteries. Those choices change empty weight and empty arm. A safe calculation must start with the current aircraft weighing report. Do not copy another airplane’s numbers. Use the exact data for the aircraft being loaded.

Planning Takeoff and Landing

Fuel is often the largest moving load. It burns during flight. That can move the center of gravity. The calculator compares ramp, takeoff, zero fuel, and estimated landing conditions. This helps show whether the loading remains inside the selected envelope. It also shows useful load and remaining capacity.

Interpreting the Results

A pass message means the entered values are within the limits typed into the form. It does not approve a flight. It only checks arithmetic. A warning means one or more values exceed the entered limits. Review gross weight, baggage weight, fuel capacity, and center of gravity. Then correct the loading plan.

Good Operating Practice

Keep a saved record of common loading cases. Use conservative fuel burn estimates. Include taxi fuel. Enter baggage in the correct station. Check aft baggage carefully. Heavy items behind the seats can move the center of gravity aft. Small errors can matter when the airplane is near a limit.

Using the Tool Wisely

This tool is useful for education and planning. It also helps pilots compare loading choices. Still, the aircraft documents remain controlling. Use the operating limitations, current weight report, and approved placards. When uncertain, consult a qualified instructor, mechanic, or inspector before flight.

Record Keeping

Print or save results for repeat trips. Label each scenario clearly. Note fuel, passengers, baggage, and date. Recheck after any equipment change. New radios, paint, propellers, or upholstery can shift empty data. Update the form defaults when new weighing data is available. Good records make future planning faster and more consistent for each flight.

FAQs

1. What is RV-6 weight and balance?

It is the process of finding total aircraft weight and center of gravity. It uses each station weight, arm, and moment. The result helps compare loading against selected limits.

2. Can I use the sample numbers for flight?

No. Sample numbers are only examples. Use your aircraft weighing report, current equipment list, operating limitations, and placards. Every aircraft can differ.

3. What does arm mean?

Arm is the distance from the selected datum to the load station. It is usually measured in inches. The arm is multiplied by weight to find moment.

4. What is moment?

Moment is weight times arm. It shows how strongly a load affects balance. Loads farther from the datum create larger moments.

5. Why calculate landing CG?

Fuel burns during flight. That changes weight and moment. An aircraft may be within limits at takeoff but closer to a limit at landing.

6. What fuel density should I enter?

Use the density required by your documents or local planning method. Aviation gasoline is often estimated near six pounds per gallon, but users should confirm the proper value.

7. What happens if baggage is too heavy?

The calculator shows a check message. Reduce baggage, move approved loads, reduce fuel if allowed, or change the flight plan. Never exceed structural or balance limits.

8. Does this replace aircraft documents?

No. It only performs arithmetic from your entries. Aircraft records, operating limitations, placards, and qualified guidance control real flight decisions.


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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.