Improving rowing performance by adjusting oar blade size and angle

Area of Science:

• Fluid Dynamics
• Sports Engineering
• Biomechanics

Background:

• Rowing performance is influenced by blade hydrodynamics.
• Previous research identified an optimal blade angle of 15 degrees.
• Optimizing blade design can lead to significant improvements in rowing efficiency.

Purpose of the Study:

• To investigate the effect of a forward-tilted rowing blade on water motion efficiency.
• To demonstrate that modified blades increase boat speed at equal input power.
• To validate previous findings on optimal rowing blade angles.

Main Methods:

• A 1:5 scaled rowing boat model was used for performance testing.
• Rowing blades with varying sizes and angles were analyzed.
• Towing tank experiments were conducted to measure boat speed and input power.

Main Results:

• Modified rowing blades resulted in a 0.4% increase in boat speed at the same input power.
• The optimal blade angle was confirmed to be 15 degrees relative to the oar shaft.
• A 4-6% increase in blade area compensated for efficiency improvements to maintain input power.

Conclusions:

• Forward-tilted rowing blade design enhances hydrodynamic efficiency.
• Optimized blade angles and increased blade area contribute to improved rowing performance.
• This research validates and refines previous findings on rowing blade optimization for increased boat speed.