How can I calculate the pitch of a hovercraft propeller

  • Thread starter Thread starter Frannas
  • Start date Start date
  • Tags Tags
    Pitch Propeller
Click For Summary
SUMMARY

Calculating the pitch of a hovercraft propeller involves understanding key variables such as desired thrust, blade length, and available shaft horsepower (HP). To determine the optimal number of blades, one must apply blade element theory and analyze rotor solidity. Practical experimentation with different blade sets is essential for achieving the best performance. This process can also be adapted for small ship propellers, such as those used in tugboats.

PREREQUISITES
  • Understanding of thrust generation in propulsion systems
  • Knowledge of blade element theory
  • Familiarity with rotor solidity concepts
  • Experience in practical testing and data recording
NEXT STEPS
  • Research blade element theory in propeller design
  • Learn about rotor solidity and its impact on performance
  • Explore thrust calculation methods for hovercraft and marine propellers
  • Investigate experimental design for testing different blade configurations
USEFUL FOR

Aerospace engineers, marine engineers, and hobbyists interested in hovercraft and small vessel propulsion systems.

Frannas
Messages
23
Reaction score
0
How can I calculate the pitch of a hovercraft propeller, what variables do I need?
How do I know how many blades must I use to get the ultimate end result?
 
Engineering news on Phys.org
I am no aeronautical engineer, but you might want to start with:
How much thrust do you want to produce?
What is the length of each blade?
How much shaft HP can you generate?
Or, How much do you have?
 
jonathanh said:
I am no aeronautical engineer, but you might want to start with:
How much thrust do you want to produce?
What is the length of each blade?
How much shaft HP can you generate?
Or, How much do you have?

mm...sorry.. i am new here. and i have exactly the same question as his.
so, when i got all those specification. what should i do then?
does this calculations can be applied to ship propeller?
let's say ship in small size , about a size of a tugboat.

thanks before.
 
Frannas said:
How can I calculate the pitch of a hovercraft propeller, what variables do I need?

That would require you to measure the angles of the blade, usually at a specified radial distance (probably 0.75R).

How do I know how many blades must I use to get the ultimate end result?

That's a loaded question, as it would require using blade element theory and an analysis of the rotor solidity. In short, just build different sets of blades yourself, test it out and record the results.
 

Thread 'Hydraulic Cylinder Held In Place Until Needed'

I have encountered a vertically oriented hydraulic cylinder that is designed to actuate and slice heavy cabling into sections with a blade. The cylinder is quite small (around 1.5 inches in diameter) and has an equally small stroke. The cylinder is single acting (i.e. it is pressurized from the bottom, and vented to atmosphere with a spring return, roughly 200lbs of force on the spring). The system operates at roughly 2500 psi. Interestingly, the cylinder has a pin that passes through its...
View full post »

Similar threads

Design of Hydropowered Turbine Propeller for Mobile Charger
  • · Replies 11 ·
Replies
11
Views
2K
Variable pitch spring calculations
  • · Replies 1 ·
Replies
1
Views
3K
Calculating the speed air comes out of a fan
  • · Replies 1 ·
Replies
1
Views
3K
Pitch axis location of aerodynamic profiles of wind turbine blades
  • · Replies 6 ·
Replies
6
Views
2K
Selection of airfoil and sizing of propeller
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Can Propeller Speeds and Wave Breaks Challenge the Speed of Light?
  • · Replies 13 ·
Replies
13
Views
2K
Propellers on an RC Quadcopter?
  • · Replies 24 ·
Replies
24
Views
4K
Function for the Thrust of a Ducted Fan
  • · Replies 2 ·
Replies
2
Views
3K
Calculating lift force of a motorised hovercraft
  • · Replies 4 ·
Replies
4
Views
9K
How to calculate the applied radial load on a bearing?
  • · Replies 5 ·
Replies
5
Views
8K