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Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft Formula

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The Maximum Lift-to-Drag Ratio is the highest ratio of lift force to drag force that an aircraft can achieve. Check FAQs

LDmax ratio = \frac{E \cdot c}{\ln (\frac{W L,beg}{W L,end})}

LDmax_ratio - Maximum Lift-to-Drag Ratio?E - Endurance of Aircraft?c - Specific Fuel Consumption?W_L,beg - Weight at Start of Loiter Phase?W_L,end - Weight at End of Loiter Phase?

Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft Example

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Here is how the Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft equation looks like with Values.

Here is how the Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft equation looks like with Units.

Here is how the Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft equation looks like.

5.0702 = \frac{452.0581 \cdot 0.6}{\ln (\frac{400}{394.1})}

5.0702 = \frac{452.0581s \cdot 0.6kg/h/W}{\ln (\frac{400kg}{394.1kg})}

5.0702 = \frac{452.0581 \cdot 0.6}{\ln (\frac{400}{394.1})}

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Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft Solution

Follow our step by step solution on how to calculate Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft?

FIRST Step Consider the formula

LDmax ratio = \frac{E \cdot c}{\ln (\frac{W L,beg}{W L,end})}

Next Step Substitute values of Variables

∴

LDmax ratio = \frac{452.0581s \cdot 0.6kg/h/W}{\ln (\frac{400kg}{394.1kg})}

Next Step Convert Units

∴

LDmax ratio = \frac{452.0581s \cdot 0.0002kg/s/W}{\ln (\frac{400kg}{394.1kg})}

Next Step Prepare to Evaluate

∴

LDmax ratio = \frac{452.0581 \cdot 0.0002}{\ln (\frac{400}{394.1})}

Next Step Evaluate

∴

LDmax ratio = 5.0702363230453

LAST Step Rounding Answer

∴

LDmax ratio = 5.0702

Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft Formula Elements

Variables

Functions

Maximum Lift-to-Drag Ratio

The Maximum Lift-to-Drag Ratio is the highest ratio of lift force to drag force that an aircraft can achieve.

Symbol: LDmax_ratio

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Maximum Lift-to-Drag Ratio

Endurance of Aircraft

Endurance of Aircraft is the maximum length of time that an aircraft can spend in cruising flight.

Symbol: E

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Formulas to find Endurance of Aircraft

Specific Fuel Consumption

Specific Fuel Consumption is a characteristic of the engine and defined as the weight of fuel consumed per unit power per unit time.

Symbol: c

Measurement: Specific Fuel ConsumptionUnit: kg/h/W

Note: Value should be greater than 0.

Formulas to find Specific Fuel Consumption

Weight at Start of Loiter Phase

Weight at Start of Loiter Phase is considered as the weight of the plane just before going to loiter phase.

Symbol: W_L,beg

Measurement: WeightUnit: kg

Note: Value should be greater than 0.

Formulas to find Weight at Start of Loiter Phase

Weight at End of Loiter Phase

The Weight at End of Loiter Phase refers to the aircraft's mass after completing a period of flying at a predetermined location or holding pattern.

Symbol: W_L,end

Measurement: WeightUnit: kg

Note: Value should be greater than 0.

Formulas to find Weight at End of Loiter Phase

The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function.

Syntax: ln(Number)

Other formulas in Jet Airplane category

Go Endurance of Jet Airplane

E = C L \cdot \frac{\ln (\frac{W 0}{W 1})}{C D \cdot c t}

Go Thrust-Specific Fuel Consumption for given Endurance of Jet Airplane

c t = C L \cdot \frac{\ln (\frac{W 0}{W 1})}{C D \cdot E}

Go Endurance for given Lift-to-Drag Ratio of Jet Airplane

E = (\frac{1}{c t}) \cdot LD \cdot \ln (\frac{W 0}{W 1})

Go Thrust-Specific Fuel Consumption for given Endurance and Lift-to-Drag Ratio of Jet Airplane

c t = (\frac{1}{E}) \cdot LD \cdot \ln (\frac{W 0}{W 1})

How to Evaluate Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft?

Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft evaluator uses Maximum Lift-to-Drag Ratio = (Endurance of Aircraft*Specific Fuel Consumption)/ln(Weight at Start of Loiter Phase/Weight at End of Loiter Phase) to evaluate the Maximum Lift-to-Drag Ratio, Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft is a measure of maximum lift to drag ratio of a jet aircraft during endurance flights, calculated by considering the aircraft's preliminary endurance, specific fuel consumption and weight changes during loiter, this enabling designers to optimize aircraft performance and fuel efficiency. Maximum Lift-to-Drag Ratio is denoted by LDmax_ratio symbol.

How to evaluate Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft using this online evaluator? To use this online evaluator for Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft, enter Endurance of Aircraft (E), Specific Fuel Consumption (c), Weight at Start of Loiter Phase (W_L,beg) & Weight at End of Loiter Phase (W_L,end) and hit the calculate button.

FAQs on Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft

What is the formula to find Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft?

The formula of Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft is expressed as Maximum Lift-to-Drag Ratio = (Endurance of Aircraft*Specific Fuel Consumption)/ln(Weight at Start of Loiter Phase/Weight at End of Loiter Phase). Here is an example- 5.069585 = (452.0581*0.000166666666666667)/ln(400/394.1).

How to calculate Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft?

With Endurance of Aircraft (E), Specific Fuel Consumption (c), Weight at Start of Loiter Phase (W_L,beg) & Weight at End of Loiter Phase (W_L,end) we can find Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft using the formula - Maximum Lift-to-Drag Ratio = (Endurance of Aircraft*Specific Fuel Consumption)/ln(Weight at Start of Loiter Phase/Weight at End of Loiter Phase). This formula also uses Natural Logarithm (ln) function(s).

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Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft Formula

Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft Example

Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft Solution

Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft Formula Elements

Other formulas in Jet Airplane category

How to Evaluate Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft?

FAQs on Maximum Lift to Drag Ratio given Preliminary Endurance for Jet Aircraft

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