Two dimensional lift drag data for the NACA 2412 airfoil with 2 percent camber (from Ref 12) may be curve fitted accurately as follows CL 0 178 0 109 0 00109 2 CD 0 0089 1 97E4 8 45E5 2 1 35E5 3 9 92E74 With in degrees in the range 4 10 Compare (a) The lift curve slope and (b) The angle of zero lift with theory, Eq (8 69) (c) Prepare a polar lift drag plot and compare with Fig 7 25

Question: Two-dimensional lift-drag data for the NACA 2412 airfoil with 2 percent camber (from Ref. 12) may be curve-fitted accurately as follows: CL 0.178 + 0.109

Two-dimensional lift-drag data for the NACA 2412 airfoil with 2 percent camber (from Ref. 12) may be curve-fitted accurately as follows: CL ≈ 0.178 + 0.109α – 0.00109α 2 CD ≈ 0.0089 + 1.97E−4α + 8.45E−5α 2 – 1.35E−5α 3 + 9.92E−7α4 With α in degrees in the range –4° < α < +10° Compare
(a) The lift-curve slope and
(b) The angle of zero lift with theory, Eq. (8.69).
(c) Prepare a polar lift-drag plot and compare with Fig. 7.25

Step by Step Solution

★★★★★

3.39 Rating (158 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The lift formula is not quite linear in but a reasona... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

E-ME-FM (982).docx

120 KBs Word File

Students Have Also Explored These Related Mechanical Engineering Questions!

Consider the data for the NACA 2412 airfoil given in Fig. 4.5. Calculate the lift and moment about the quarter chord (per unit span) for this airfoil when the angle of attack is 4 and the free stream...

Reconsider the lift-drag data for the NACA 4412 airfoil from Prob. 8.83. (a) Again draw the polar lift-drag plot and compare qualitatively with Fig. 7.26. (b) Find the maximum value of the...

Consider an NACA 2412 airfoil with a 2-m chord in an airstream with a velocity of 50m/s at standard sea level conditions. If the lift per unit span is 1353 N, what is the angle of attack?

Under what condition could the coefficient of multiple determination be lower than the zero order correlation coefficients? Please give a broad one-sentence explanation. No need for lengthy equations.

Among - to -year-olds, 33% say they have while under the influence of . Suppose - to -year-olds are selected at random. Complete parts (a) through (d) below. Question content area bottom Part 1 (a)...

The airfoil data shown below were obtained in the NACA two - dimensional Low Turbulence Pressure Tunnel at the NACA Langley Memorial Laboratory. This facility went into operation in Spring 1 9 4 1 ....

Target Costing Basic Motor Corporation uses target costing. Assume that Basic marketing personnel estimate that the competitive selling price for the QuikCar in the upcoming model year will need to...

Client Amount 1-Oct 8-Oct 15-Oct 22-Oct 1 $300 X 2 $275 X X 3 $350 X 4 $400 X X X X 5 $350 X 6 $500 X X 7 $425 X X X Table 1: Demand from Local Business.

We studied the case of the lifting flow over a circular cylinder. In real life, a rotating cylinder in a flow will produce lift; such real flow fields are shown in the photographs in Figure 3.34b and...

The graph provided consists of an experimental data for lift coefficient and moment coefficient about the quarter - chord point for an NACA 2 4 1 2 airfoil. Calculate the lift and moment about the...

SRP Ltd has the following unadjusted trial balance as at 31 Dec 2015. Account Titles Debit ($) Credit ($) Cash 19,600 Accounts Receivable 7,000 Supplies 1,300 Prepaid Insurance 900 Equipment 27,000...

In Exercises, for each function: a) Determine whether it is one-to-one. b) If the function is one-to-one, find a formula for the inverse. 1. f(x) = x + 4 2. f(x) = 7 - x

Movie companies need to predict the gross receipts of individual movies once a movie has debuted. The following results, stored in PotterMovies , are the first weekend gross, the U.S. gross, and the...

You and your colleague, James, work in accounting department. You have been with the company for ten years, and James was hired a few month ago. He is equally trained in the field, but he tends to...

Rory has run a successful proprietorship for the past four years 12 stay in Protected View Information for XX Corporation for 2024 follows: stay in Protected View, # 2 Information for XX Corporation...

The Komodo Dragon is the largest species of lizard on earth. It is found in a small group of Indonesian Islands and grows to a maximum length of 9.8 ft. They are aggressive, venomous and have septic...

A 0.55 m-diameter horizontal circular cylinder is located 35 m below the still water level at an offshore site where the water depth is 75.0 m (Figure Q1). Waves 5.5 m high with period 12.5 s pass...

Detail fully how you would attempt to identify and analyse developments in management and organisational behaviour.

Beth Miller does not believe that the international Fisher effect (IFE) holds. Current one-year interest rates in Europe are 6 percent, while one-year interest rates in the United States are 9...

What does Relative Valuation typically require? Short - term forecasts Long - term forecasts Historic revenue data

Complete the following textbook problems: Ch. 1, p. 22 & 23, #16 as either depository or nondepository. Explain the general difference between depository and nondepository institution sources of...