402.03 Glider Handling Speed Ranges, Weight & Balance Calculations

1. 402.03 Glider Handling Speed Ranges, Weight & Balance Calculations

2. 402.02 Speed Ranges, Weight & Balance Calculations Main Teaching Points • Typical Speed Ranges for the SGS 2-33A • How to interpret Weight and Balance information

3. 402.02 Speed Ranges, Weight & Balance Calculations Air Speeds • Best Glide Dual • Best Glide Solo • Min Sink Dual • Min Sink Solo • VNE • Max Air Tow • Manoeuvering Speed • Normal Towing Speed • Minimum Forward Slipping Speed • 50 mph • 45 mph • 42 mph • 38 mph • 98 mph • 98 mph • 65 mph • 65-70 mph • 50 mph solo/55 mph dual

4. 402.02 Speed Ranges, Weight & Balance Calculations Stalling Speeds • Stall Speed Solo • Stall Speed Dual • Stall Speed Solo, Dive Brakes Open • Stall Speed Dual, Dive Brakes Closed • Stall Speed Solo, 30° bank • Stall Speed Dual, 30° bank • 34 mph • 38 mph • 36 mph • 40 mph • 36.5 mph • 41 mph

5. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts

6. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Front Seat Pilot weighs 150 lbs Rear Seat Pilot weighs 210 lbs

7. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Scenario: You weigh 190 lbs in the front seat, and your instructor weighs 200 lbs in the rear seat. Are you in limits?

8. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Scenario: You weigh 200 lbs in the front seat, and your instructor weighs 180 lbs in the rear seat. Are you in limits?

9. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Scenario: You weigh 190 lbs in the front seat, and your instructor weighs 200 lbs in the rear seat. Are you in limits?

10. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Scenario: You weigh 70 lbs in the front seat, and your instructor weighs 150 lbs in the rear seat. Are you in limits?

11. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Placards Scenarios: You weigh 200 lbs in the front seat, and your instructor weighs 150 lbs in the rear seat. Are you in limits? You weigh 100 lbs in the front seat, and your instructor weighs 125 lbs in the rear seat. Are you in limits? You weigh 200 lbs in the front seat, and your instructor weighs 165 lbs in the rear seat. Are you in limits? You weigh 130 lbs. Are you in limits to fly solo?

12. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Placards Scenarios: You weigh 220 lbs in the front seat, and your instructor weighs 150 lbs in the rear seat. Are you in limits? You weigh 100 lbs in the front seat, and your instructor weighs 125 lbs in the rear seat. Are you in limits? You weigh 210 lbs in the front seat, and your instructor weighs 170 lbs in the rear seat. Are you in limits? You weigh 130 lbs. Are you in limits to fly solo? What is the maximum payload of this aircraft? What is the basic empty weight of this glider?

13. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Scenario: You weigh 200 lbs in the front seat, and your instructor weighs 175 lbs in the rear seat. Are you in limits? Are you sure?

14. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Scenario: You weigh 200 lbs in the front seat, and your instructor weighs 175 lbs in the rear seat. Are you in limits? What is the maximum payload of this aircraft? What is the basic empty weight of this glider?

15. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Calculations Weight and balance is a lot like being on a teeter-totter (see-saw): Both weight and position (arm) are important! What happens if one child is heavier? Lighter? Moves closer or farther from the center?

16. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Calculations “Moment” is the result of multiplying the weight and the “arm” (distance from the measuring point or datum). You find the moment for each “station” (such as aircraft seats) and add up the moment, and then divide by the total weight to find the Center of Gravity. Then you can compare your number to the acceptable forward and aft C of G limits.

17. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Calculations

18. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Calculations

19. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Calculations

20. 402.02 Speed Ranges, Weight & Balance Calculations Review • Best Glide Dual • Best Glide Solo • Min Sink Dual • Min Sink Solo • VNE • Max Air Tow • Manoeuvering Speed • Normal Towing Speed • Minimum Forward Slipping Speed

21. 402.02 Speed Ranges, Weight & Balance Calculations Review • Stall Speed Solo • Stall Speed Dual • Stall Speed Solo, Dive Brakes Open • Stall Speed Dual, Dive Brakes Closed • Stall Speed Solo, 30° bank • Stall Speed Dual, 30° bank • 34 mph • 38 mph • 36 mph • 40 mph • 36.5 mph • 41 mph

22. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Scenario: You weigh 100 lbs in the front seat, and your instructor weighs 260 lbs in the rear seat. Are you in limits?

23. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Charts Scenario: You weigh 100 lbs in the front seat, and your instructor weighs 70 lbs in the rear seat. Are you in limits?

24. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Placards Scenarios: You weigh 200 lbs in the front seat, and your instructor weighs 150 lbs in the rear seat. Are you in limits? You weigh 100 lbs in the front seat, and your instructor weighs 75 lbs in the rear seat. Are you in limits? You weigh 200 lbs in the front seat, and your instructor weighs 145 lbs in the rear seat. Are you in limits? You weigh 120 lbs. Are you in limits to fly solo? What is the maximum payload of this aircraft? What is the basic empty weight of this glider?

25. 402.02 Speed Ranges, Weight & Balance Calculations Weight and Balance Calculations

26. 402.01 Introduction to the Schweizer 2-33A Glider Next class: Launch Procedures, Checks, and the Circuit