How many HP is 30lb thrust?

Pounds of Thrust to Horsepower Chart
Pounds of Thrust (lbs) Amps Horsepower
30 30 0.36
40/45 42 0.5
50/55 50 0.6
70 42 1.01
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May 29, 2020

How much thrust does a 6hp outboard have?

How Many Pounds Of Thrust Does A 6hp Outboard Have? The thrust of a propeller designed for 3 kn speed (typical electric system) is *50 lbs/hp, but the thrust of a 6 hp outboard designed for 6 kn would be less than 30 lbs/hp.

How many HP is 55 lbs of thrust?

Using this formula the popular Newport Vessels NV-Series 55lb Thrust Trolling Motor is rated as 624 watts at the highest forward speed and so 624/746 = 0.84 and would be roughly equivalent to a 0.84 horsepower motor.

How many pounds of thrust does a 3.5 hp outboard motor have?

A Bollard pull test showed that the Mercury 3.5hp and Tohatsu 3.5hp were the most powerful at 90lbs of thrust (These two engines along with the Mariner are virtually identical). The least effective was the Honda 2.3hp at 66lbs of thrust.

How much thrust does an outboard motor have?

Trolling motors are rated in pounds of thrust. As a rule of thumb 72 to 75lb. of thrust roughly equals one horsepower or 746W of electrical power. A typical 12V motor that draws 60A consumes approximately 720W.

How fast will a 5hp outboard motor go?

It would do around 67 mph on the race course. On a small hydroplane race boat about 55 mph with a 15hp johnson or mercury and a racing lower unit. Anything else will be slower. This is me in a little bigger boat with a 30hp engine.

How many pounds of thrust do I need for my boat?

Boat weight is key when determining how much thrust you need. General rule of thumb: you need at least 2 lbs. of thrust for every 100 lbs. of fully-loaded boat weight (people and gear included).

How much thrust does 5hp motor have?

A 5 hp probably has somewhere near or over 200 pounds of thrust.

How fast will a 55lb trolling motor go?

Assuming perfect riding conditions, the use of the best fuel i.e. the distillate marine diesel, and moderate load, 55-pound trolling motors are likely to attain a maximum speed of only 5 miles per hour. This would take around two hours for the deep cycle battery charge to get completely depleted.

How many HP is a pound of thrust?

At 550 ft per second, one pound of thrust = 1 horsepower.

How do you calculate pounds of thrust?

Divide the converted horsepower by the velocity to calculate the thrust. For this example, 330,000 lb. ft/minute divided by 40 feet/minute equals 8,250 lbs. The thrust is 8,250 lbs.

What is the strongest trolling motor?

Minn Kota has introduced the most powerful trolling motor on the market featuring 112 pounds of thrust.

How long will a deep cycle battery run a trolling motor?

Almost 5 hours doesn’t seem too bad, but that is really a max runtime in ideal conditions. Reality is likely to be less. If the battery is old, damaged or not fully charged then you will not get the rated amp hours from it, reducing your runtime.

What is a good thrust-to-weight ratio?

5:1
Acceptable Thrust to weight(rocket and installed motors) ratio: A minimum ratio of 5:1 is typically required. This can be as low as 3:1 at the RSO’s discretion. This decision will require low ground level winds and stable design (Cg more than 1 caliber ahead of Cp).

How do you calculate thrust needed?

  1. Thrust is the force which moves an aircraft through the air. Thrust is generated by the engines of the airplane. …
  2. F = ((m * V)2 – (m * V)1) / (t2 – t1) …
  3. F = m * a. …
  4. m dot = r * V * A. …
  5. F = (m dot * V)e – (m dot * V)0. …
  6. F = (m dot * V)e – (m dot * V)0 + (pe – p0) * Ae.

What is the best thrust-to-weight ratio?

The F-22’s thrust-to-weight ratio in typical combat configuration is nearly at unity (1:1) in maximum military power (no afterburner), and 1.25 in full afterburner. This aircraft, like many similar fighters can accelerate while in a vertical climb depending its weight.

What happens if thrust is greater than drag?

As long as the thrust continues to be greater than the drag, the aircraft continues to accelerate. When drag equals thrust, the aircraft flies at a constant airspeed.

Is higher thrust to weight ratio better?

Thrust-to-weight ratio reflects the amount of forward momentum an engine can generate in comparison to its weight. Aircraft and rockets use thrust to overcome drag and move through the air. The higher the thrust-to-weight ratio, the quicker the craft will be able to accelerate, and the faster it can go.

How much thrust does a Cessna 172 produce?

For Cessna172 (ZS-MWL) the static thrust was ranged from 32Kg at “idle” position to 211Kg at “full throttle” position. The diameters of propeller of the above aircrafts increased gradually which meant the bigger the propeller was the more the static thrust produced at the same RPM.

What force overcomes lift?

thrust
And like lift, drag acts through the aircraft center of pressure. To overcome drag, airplanes use a propulsion system to generate a force called thrust. The direction of the thrust force depends on how the engines are attached to the aircraft.

What happens if thrust becomes less then drag?

When thrust become smaller than drag, the aircraft slows. However, the magnitude of lift is often dependent on speed. Hence, the plane will begin to fall. However again, as the craft falls it gains speed and a weight-balancing lift is reestablished.