1°. Equation 4. Although other factors play a role in the type and speed of the mass movement, without gravity, the material would not move, regardless of slope or any other. Two-dimensional capabilities were added to the program in version 5. The predominant equation which pervades the study of electric circuits is the equation. 0 can perform a simulation with ONLY a 2D mesh (i. Radiocarbon age dating showed that slope failures are early to mid-Holocene. 12 One kind of problem that is associated with uniform flow is what the channel slope will be if discharge Q, water depth d, and bed sediment size D are specified or imposed upon the flow. Next, save the unsteady flow data. For the calculation of the relative permeabilities according to Van Genuchten, see Material Models Manual Section 19. UNSTEADY FLOW DATA. 2. Home › Forums › HEC-RAS Help › EG Slope for distributing flow along BC Line – 2D › Reply To: EG Slope for distributing flow along BC Line – 2D. Slope is like a hill's steepness. It is also a fantastic way to confirm an existing trend. The "end" part of the connection must reference a storage area or cross section. I typically estimate the EGL slope from the terrain slope in the area where the flow is expected to be most concentrated. We are widely respected for conceptual and final design work of fish passage facilities and biological assessments relating to fish. Two-dimensional capabilities were added to the program in version 5. To comprehensively study the influence of the guide vane inlet slope on the axial-flow pump, eight groups of axial-flow pumps with different guide vane inlet slopes are designed and studied in. Unsteady flow data consists of boundary conditions (external and internal), as well as initial conditions. For EG Slope for distributing flow along BC Line, type in 0. Thanks for the reply Cameron. 01: Channel Flow Terms Figure 2F-2. 1: In a fireplace, heat transfer occurs by all three methods: conduction, convection, and radiation. 5 The slope distance between two points is 21. So, if we have three collinear points in the order A, B, and C, then these points will be collinear if AB + BC = CA. 14. (See A-2. L. 4 Measurement of soil erosion resistance of gully headwalls. First, let’s briefly review why you may need to interpolate cross sections in HEC-RAS. Guest. Blasius equation: f = 0. e. no cross sections). 11 and Figure 2. On top of what Lonnie Said; Sometimes flow doesnt just appear at the channel of the stream and if you enter anything like 0. ft Energy grade elevation at upstream end of. 2. 25, we saw that a flow net can be viewed as the solution of a two-dimensional, steady-state, boundary-value problem. 5 SLOPE 2. Home › Forums › HEC-RAS Help › EG Slope for distributing flow along BC line › Reply To: EG Slope for distributing flow along BC line. The general rule is to follow the natural slope of the ground. The development of the hydraulic grade line is a last step in the overall design of a storm drain system. Guest. The thalweg thus marks the natural direction (the profile) of a watercourse. If you play with the n value and entrance/exit loss coefficients you can. 835 m and the difference in elevation between the points is 3. Populate the Hydrograph Data i. The task is to determine whether the points (x1, y1) and (x2, y2) lie on the same side of the given line or not. The existing creek flow performance is to be maintained. EG Slope for Distributing Flow along the BC line , required to distribute the upstream boundary condition across the upstream cells. #3 – Correlation Method. In this case, the units for the y-axis of the graph are more correctly represented as lb f /ft or N/m. } It is the slope of the line (chord) from the origin through the point on the curve. Remove that BC line and make sure the 1D reach is connected to the 2D Area. We will employ this technique here. Study with Quizlet and memorize flashcards containing terms like Triangle DEF and triangle DGF are shown in the diagram. e. Try selecting Specified Interval from the drop down menu, then enter in 1. Boundary conditions: can be used to specify the values of all basic solution variables (displacements, rotations, warping amplitude, fluid pressures, pore pressures, temperatures, electrical potentials, normalized concentrations, acoustic pressures, or connector material flow) at nodes; can be given as. HEC-RAS 2D Flood Modelling Tutorial HEC-RAS 2D Flood Modelling Tutorial 2 Civil Site Design and HECRAS 2D Flood Modelling HECRAS version 5 and later includes functionality… Return-Path: X-Original-To: ml-node+s1091112n1348h77@n5. This topic has 0 replies, 243 voices, and was last updated 4 years, 7 months ago by markjualo. It's related to the slope of the channel bottom and the velocity together. Include child pages. the equation 3 2 d dt. Click OK to close the Flow Hydrograph dialog. The uniform flow distribution is achieved independently of L/d, when Reynold number (Re) is less than 100. Telephone: 1 888 221-7141. If you put an hydrograph in US Boundary Condition, then don´t forget to provide an initial EG slope. In other term, the slope of a line. Bathymetric data reveal abundant submarine landslides along the deformation front of the northern Cascadia margin that might have significant tsunami potential. The term is also sometimes used to refer to a subterranean stream that. O the BC line is diagonal because the amount spent on both goods is less or equal to incomo O the consumer will tind thvat every point along the 13 line is outside the budgot constraint O the consumer will find the highest utility ***** x and y just touch the 12 line Correct o all of the above and the consumer can choose any point on or below the. Unsteady Flow Data The user is required to enter boundary conditions at all of the external boundaries of the system, as well as any desired internal locations, and set the initial flow and storage area conditions at the beginning of the simulation. E. Simply supported beam. This is because subcritical flow calculations move upstream. Given two integer points (x1, y1) and (x2, y2). 5 cm [1 in. 1114. A steep of 1 in 40 – 1 in 80 is preferred for house sewers. FOR THE COMMANDER: RUSSELL L. US. Dist Center R ft Distance from center of channel to right encroachment. hydraulic jumps, transition from narrow cross section to wide cross section). In fact, in many ways it’s a lot easier. PF 1 stands for profile flow 1. 1 Gravity mains must be designed with the following minimum grades: Gravity Main Minimum Grade 8” 0. Enter “Simple Geometry” for the name. The Coast and Insular mountain ranges (Holland, 1976) extend for about 1200 km along the Pacific coast of British Columbia (including islands), from the 49th Parallel to the border of Alaska (Fig. 1. Select “4 Hour” from the Data time interval drop-down. 8m. 3. 2. This forum has 2,836 topics, 5,051 replies, and was last updated 10 hours, 7 minutes ago by Christine Blackshaw. Rberg. ) 1. The term landslide is almost synonymous with. Equations for Hydraulic Grade Line and Energy Grade Line. Top 3 Formula to Calculate Beta. gradually varied flow. Modeling the flow evolution of a slope governed by solid mass has been recognized as a challenge, yet most stability analyses are only based on stability number or Safety Factor (FOS). Transcript. Equation (5. If José had unlimited income or if goods were free, then he could consume without limit. A series of laboratory experiments were conducted under slope gradients of 5°, 10°, 15°, and 20° and flow rates of 2, 4, and 8 L min−1 to measure the water flow velocities over eroding and non-eroded loess soil slopes, under saturated conditions by using electrolyte tracing. HEC-RAS. The project will enable Westcoast to provide incremental firm transportation service from receipt points along the Fort Nelson Mainline between CS N4 and CS N5; and from receipt points on the Aitken Creek Pipeline in T-North. In the empirical method, the slope soil above the shear zone is assumed as a rigid body. 13-2CThe inflow boundary conditions for the test problems were chosen so that the function U(x, y, z) = cos(ω (y + z – (t y + t z)x)) is the exact continuous solution of the homogeneous f i 1, i 2, i 3 = 0 problem (2). varied flow at the point where the jump condition for the sequent depths is correct. Application 1) This Part applies to all plumbing systems covered in this Code. nabble. has to be analyzed by the Newton Raphson method for pipe flows for given pipe lengths L and pipe diameters D. It's related to the slope of the channel bottom and the velocity together. We offer a full spectrum of services beginning with detailed. José has a total of $56 to spend. Always remember this… It is the slope of the energy grade line (EGL). That sum is the total energy or EGL. 3 Using the slope-deflection method, determine the end moments of the members of the non-sway frames shown in Figure. For this example, we’ll use HECRAS to undertake a 2D flow analysis of. Dist Center L ft Distance from center of channel to left encroachment. Water surface doesn’t necessarily have to though (i. 2. Rberg. 1: A uniform open-channel flow: the depth and the velocity profile is the same at all sections along the flow. FUHRMAN Major General, USA Chief of StaffFigure [Math Processing Error] 4. Our water resource engineering team is composed of technical experts in hydrology, hydraulics and civil engineering who interact with our fisheries, aquatic and terrestrial scientists to provide cost-effective, ecosystem-based solutions. Then, a horizontal line pierces through point B. Below this lies the continental slope , a much steeper zone that usually merges with a section of the ocean floor called the continental rise at a depth of roughly 4,000 to 5,000. It contains all of the combinations of temperature and pressure at which the liquid boils. 5. V = K * i. For EG Slope for distributing flow along BC Line, type in 0. W(z 1)=U ∞ z 1 e −iα+κ 2π 1 z 1Influence line is a diagram that shows the variation for a particular force/moment at specific location in a structure as a unit load moves across the entire structure. Repeat steps 3–4 to create a line on the right side of the domain named “Outflow”. so that its tangent is at every point in the direction of the local fluid velocity (Fig. Viewing 17 topics - 1 through 15 (of 2,815 total) Providing Integrated Solutions to Meet Your Project Needs. Flight tracks are indicated by the dotted lines; those segments along which significant turbulence was encountered are denoted by pluses. 3. 000048 m/min, 0. The easiest way to get this is to assume the Energy Grade slope will be close to the bed slope. Make sure each cell has only one point in it. 2. This work was financially supported by the “ National Natural Science Foundation of China ” under Project No. Arterioles distribute blood to capillary beds, the sites of exchange with the body tissues. θ (Theta) ：这个参数一维和二维都有，但意义似乎. Hydrostatic pressure p is a component of the hydraulic head. 4. Specifically this tutorial discusses importing files into HEC-RAS that were generated by SMS. . Note that Methods 1 through 4 are compared in Figure 9-67 with a. Under Rain only condition, the EG channel flow regime distribution for the 20°, 50 mm h −1 treatment were in the similar range as the 15°, 50 mm h −1 treatment with large uncertainty. The initial approximation was interpolated from the solution on the previous coarse grid. HRAS/Readme. The influence of a certain force (or moment) in a structure is given by (i. With continued cultivation and erosion, some slope positions (e. In the background, these parameters are generated which results in a reduction of the permeabilities above the phreatic line. Next, save the unsteady flow data. Reply To: EG Slope for distributing flow along BC line Home › Forums › HEC-RAS Help › EG Slope for distributing flow along BC line › Reply To: EG Slope for distributing flow along BC line July 29, 2016 at 10:38 pm #10000 6. Here I’ve named it “Profile 1” and it is stored in the Profile Lines bin. e. If P (x1,y1) and Q (x2,y2) are the two points on a straight line, then the slope formula is given by: Slope, m = Change in y-coordinates/Change in x-coordinates. 2. In open channel flow, the assumption of hydrostatic pressure distribution is valid in gradually varied flow along flat slope. Then the distribution of depth-averaged velocity along the lateral section will be the line joining of individual depth-averaged velocities at each vertical. Double click to end the line and when prompted, give it a name. 25 4) For transitional turbulent, it is the region where (f) varies. In the Bailong River Basin, central China, landslides and debris flows are very well developed due to the large differences in terrain, the complex geological. Type in True for the next 2 questions. 6. Click the “+” button to draw a new profile line on your 2D area. Initial conditions for 2D flow areas can be accomplished in several ways. main window. 00001 * 0. sin 3 in the last line on the left earned the second point. So we get angle ABF = angle BFC ( alternate interior angles are equal). The choice of the slope limit in this study was made after analyzing the descriptive statistics of the slope distribution in the analyzed river corridor . The goal is to investigate the numerical solution of a hydraulic jump performed by HEC-RAS. (A weir line has not been entered for this storage area connection. 141 Main Street Pittsfield, ME 04967 888-224-5942 Info@KleinschmidtGroup. In Section 2. Sample: 5B . Started by: Rberg in: HEC-RAS Help. (1) Retrogressive thaw slumps result from icy permafrost being exposed by either man-induced excavation or fluvial-thermal. Expedited Debris Flow Modeling with HEC-RAS. 658 m. Solution. uniform flows, energy line slope, hydraulic grade line slope (water surface slope) and channel bottom slope are equal to each other and will be parallel as well. 12. Dual or triple piecewise fitting functions are empirically proposed for distribution of the velocity along the profile of a slope. A contour canal is an artificial canal also renowned for being dug navigable by following the contour line of the land. If you have not previously registered and would like to comment or post on the forum, please click here to register. × Home › Forums › HEC-RAS Help › EG Slope for distributing flow along BC Line – 2D › Reply To: EG Slope for distributing flow along BC Line – 2D October 9, 2018 at 7:57 pm #11818 Lonnie A Reply To: EG Slope for distributing flow along BC line Home › Forums › HEC-RAS Help › EG Slope for distributing flow along BC line › Reply To: EG Slope for distributing flow along BC line July 27, 2016 at 5:14 pm #9998 Kleinschmidt has provided biological and engineering fish passage and hatchery consulting services for more than 250 projects located throughout the United States and Canada. 14 ft. A clearcut block above a logging camp in British Columbia. To prove that ΔDEF ≅ ΔDGF by SSS, what additional information is needed?, In the diagram, BC ≅ EF and ∠A and ∠D are right angles. SIZING THE DISTRIBUTION PIPES. 13. 12. October 12, 2018 at 6:38 am #11821. We will supply an upstream boundary condition of flow or discharge at Station 100 as 20,000 cfs. Our water resource engineering team is composed of technical experts in hydrology, hydraulics and civil engineering who interact with our fisheries, aquatic and terrestrial scientists to provide cost-effective, ecosystem-based solutions. Select data interval time to 6 Hour or according to the discharge data in your. 1 The Velocity Potential. The actual physical capacity of the pipeline may, at times, be higher than the assumed operational capacity. At this. 14. This is an average just to get a feel for the overall flow. Precipitation intensity increased in water with increase in temperature, with low water flow are able to produce many forms of water pollution, along with sedimentation, pathogens, etc. 1), developed in the rainy seasons 1995–1996, 1996–1997, 1997–1998 and measured in the wheat surface once a year before harvesting (end of May). The difference in elevation of the water surfaces in successive. velocity distribution curve along a vertical line of a channel section, refer to a standard text book/reference on Fluid Mechanics/Hydraulics/Open Channel Flow. Vel Chnl = The average flow velocity for the channel in meters per second. 08 = 0. {displaystyle R_{mathrm {static} }={frac {U}{I}},. -2x = 1/2x+5. Describe the contour-line evidence that supports your answer. perform one-dimensional (1D) steady flow, and 1D and two-dimensional (2D) unsteady flow river hydraulics calculations. 13. 2,344; 5; 4 years, 9 months ago. At every point along this line, the liquid boils to form a gas and the gas condenses to form a liquid at the same rate. We are interested in finding a particular solution to this initial-boundary value problem. 9 gpm, we’re off the scale. 2. Download Download Download Close. Using Correlation Method – Example #1. From the 2D User manual: The Energy Slope is used to compute Normal Depth from the given flow rate and the cross section data (underlying terrain data) along the Boundary Condition Line for each computational time step. displacement and velocity along the whole profile of a slope from the slip surface to the slope surface during slow movement. d , dt. Slope = The is just the slope of the above Grade Line. 2 The depth of the lateral at the property line (measured from the crown of pipe) must be no less than 36 inches and no greater than 48 inches below design grade. The figures. When the soil flume was set at a certain slope gradient, the water from the sand layer at the upper part of each segment started to infiltrate the bottom soil. At what time is the object at that point? (c) Find the time at which the speed of the particle is 3. After your first run you can look at the WSE slope in the area to see if adjustment to you initial estimate is necessary. 0 (February 2016) 56 Figure 109 ‐ Add TR‐66 breach hydrograph data to the upstream boundary condition EG Slope for distributing flow along BC Line – 2D. 3. June 7, 2016 at 9:55 pm in reply to: Editing the Weir Data #9957. 39. ° H = 210. 4 illustrates the possible distribution of water level in the soil profile, along the slope and the principle of ensuring saturation status of the soil profile along the soil slope. 2. Click OK to assign the flow conditions to the boundaries specified 41. If I need to get some subsurface flow accounting I’ll typically use a storage area connector with culverts for the pipes. or gradually varied flow. (See Article 1. The solution requires knowledge of the region of flow, the boundary conditions on the. The washed-out section of Highway 1, along the Thompson River on Nov. 16 A conventional absorption field shall not be allowed where the percolation rate exceeds 30 minutes per 2. Find the values of t at which the line tangent to the path of the particle is horizontal or vertical. The piezometric head in a flow can be measured through an flat opening parallel to the flow. Vel Chnl = The average flow velocity for the channel in meters per second. 11). Participant. com. But uniformity is an abstraction: real flows are never perfectly. Single looped network. It seems that in downhill the very best are well taken care of financially, with over 10% of our riders. Flow Distribution along Boundary • Flow is distributed to the appropriate cells based on EG Slope Conveyance or actual water surface • If the 2D area starts dry, and the flow. Point 2 (S2 Curve): y > yn Sf < So dE/dx > 0 depth decreases downstream 3. 500 kV line 65 m 45 m 30 m 20 m 10 m 287 kV line 230 kV line 138 kV line 69 kV line Typical transmission corridor widths Low Zone Step 4: Locate your geographic region. Guest. P SOLUTION From FBD of pin C: ∑F y=FFigure 5. 4. The. I don't understand why there is a difference and. Unsteady flow data consists of boundary conditions (external and internal), as well as initial conditions. 141 Main Street first 0. at a given instant in time . Tan slope angle = . Calculate the bed slope of the channel if the specific energy is 3. 1. Using isentropic flow conditions between. 3. #1- Covariance/Variance Method. ) To fix errors in the mesh, use the Editing Tools to Add, Delete, or Move points. Flow is then distributed between 2D cells adjacent to the boundary condition line (whose. TheTo calculate the slope of the line joining two points, we use the slope formula. Flow hydrograph of the input data at the upstream boundary condition line is shown below in Figure-15. expansion. 3. For flow to occur in a channel, the total head or energy line must slope negatively (downward) in the direction of flow. This is not obvious. Road drainage design has as its basic objective the reduction and/or elimination of energy generated by flowing water. 3 gpm, the pressure drop is 3 inches. In the shorter (altitudinal) wavelength than ∼200 meters, several positive SP peaks of more than 100 mV in magnitude are present, which indicate shallow perched water discharges along the slope. 7. It follows that the total head or the energy grade line and, thus, also the hydraulic grade line, is always decreasing along the flow passage. Fig. Now select the pointer from the toolbar at the top and then right-click anywhere on your profile line. Guest. In the Flow Hydrograph form, highlight all Flow cells from 0:00 to 48:00 and press Ctrl+V 39. Figure 7. Connect all seven plots with a line to complete the profile. In the Flow Hydrograph form, highlight all Flow cells from 0:00 to 48:00 and press Ctrl+V. The yellow dashed line shows the incident direction of diurnal internal tides near the M1 site, producing an incline angle γ with respect to the y-axis. 7. We can say that the given points A (2, 5), B (24, 7), and C (12, 4) are collinear. 332. In the ‘Baseflow’ column, calculate the slope of a line connecting the pre-storm baseflow to the post-storm baseflow in units of L/s per hour as follows: Find the point on the falling limb where the recession is “complete”. A person who has. If the channel is to convey 600 Cusec under the condition of maximum discharge for a given area find the values of and . Anonymous. The carpenter uses two braces along the diagonals to support the bookcase. Understanding the physics of microstructure evolution during cooling slope slurry formation is important to satisfy the need of semi-sold slurry with desired shape, size and. required if flooding is occurring downstream. An alternative approach for solving a multiple opening problem is to model the flow paths of each opening as a separate river reach. . 5 (150%) By changing the pipe,. 1. 2, increases exponentially as its velocity increases. #2 -By Slope Method in Excel. Participant. The slope of CD is . 9 or about 7 times higher than the original pipe. These two fixed points are the foci of the ellipse (Fig. General. Examples of Beta Formula. 3. Next, create the Plan with the dates and parameters of the simulation in a similar way to the 1D Unsteady case. 5 inches, about 7 times the original. Slope steepness is one of the key factors in determining landslide debris flow hazard chain. Rahul Chowdhury. 27%). The magnitude of the soil ANS is related to the soil physical condition (Li et al. 0 N. Right-click on the Geometries group and choose Add New Geometry. Now let the oncoming flow be at an angle of attack α below the horizontal. The project is located in the Peace River Regional District between Wonowon, BC and Chetwynd, BC. e. Acknowledgements. The given line segment has a midpoint at (−1, −2). outbound. com. For example, if a box of 1. l (iv) Where the slope is mild (i. They can be used for most one and two family dwellings if the minimum water pressure is at least 50 pound per square inch (psi). (Mesh problems should show up with cell points colored red. 73%) were larger than those with negative MAR EG (40. The values that come first in ordered pairs are plotted along the horizontal line (x-axis) while the second number of ordered pairs is. In a straight reach of a channel, the maximum velocity generally occurs at a distance of 0. This is a standard deviation value and is generally considered accurate with datasets of 20 or more values. nabble. And at 0. 1) u ( x, 0) = f ( x). Flow along the uneven seafloor, perturbations at the base of the mixed layer or fluctuating ocean currents can all generate internal. The slope of BC is . [NFPA 99:3. Go to the "Post-Processing" menu and click on "Plan View. The easiest way to get this is to assume the Energy Grade slope will be close to the bed slope. Because of the emergency management implications of post-wildfire work, decision makers are often looking to understand their communitExpedited Debris Flow Modeling with HEC-RAS. and press Ctrl+V. Figure 1 illustrates how surface roughness α and flow regime m affect the relation between U and h. the top of a mountain range, and. Also, graph Mach number distribution along the nozzle axis (i. Arteries transport blood away from the heart and branch into smaller vessels, forming arterioles. For the plot T, the subsurface inflow was assumed as zero. “Kleinschmidt as a whole is made of up of individuals with an immense variety and depth of knowledge of the hydropower industry. 1. EG erosion is a transitional erosion type from rill erosion to gully erosion, which plays a special role in the slope-gully system (Zhu, 1956; Ding et al. Traffic flow is defined as the rate at which cars pass through an intersection, measured in cars per minute. Next, save the unsteady flow data. Secondly and well hidden: in the check boundary conditions. S is the slope of the line between those two points. Click OK to close the Flow Hydrograph dialog. For an opaque surface, the absorptivity () α , transmissivity () τ and reflectivity () ρ are related by the equation : (A) α ρ τ + = (B) 0 ρ α τ + + = (C) 1 α ρ + = (D) 0 α ρ + = MCQ 7. AP® Calculus BC 2004 Scoring Guidelines. Layout of Distribution System: Depending upon the layout of various pipes of a distribution system there are four different systems of layout of distribution system as indicated below: 1. Press “Apply Data” button. d: y =3/2 x + 1. If you have not previously registered and would like to comment or post on the forum, please click here to register. There are many versions of aqueducts. click on the last point in the line to end the line and bring up a dialog 4. m = (y2 – y1)/ (x2 – x1) Therefore, based on the above formula, we can easily calculate the slope of a line between two points. Click OK to assign the flow conditions to the boundaries specified. or gradually varied flow. (After Fig. 7 Pada Boundary Condition pilih Flow Hydrograph Use Simulation Time 1 Hour pada “Data time interval” Masukka hidrograf banjir rencana masukkan nilai slope pada “EG Slope for distributing flow along BC Line” OK Catatan: hidrograf banjir yang dimasukkan adalah hasil perhitungan HSS DAS, kala ulang 100 the Flow Hydrograph form, highlight all Flow cells from 0:00 to 48:00. textbooks, but is every bit as important for understanding many important flow phenomena, a good example being how lift is generated on wings. What value did you use for the EG Slope for distributing flow along the BC Line? The smaller the value the more flow will spread out across your BC line and cause the flooding you see. Unstable for initial iteration. Debris flow, the most extensive and most severe geological hazard along the Karakoram Highway, frequently blocks the Karakoram Highway. Next, save the unsteady flow data. com Delivered-To: ml-node+s1091112n1348h77@n5. 4, BC lines can now be entered as internal boundary conditions inside the 2D Flow Area. 1a, the number of T-shirts José will buy is on the horizontal axis, while the number of movies he will buy José is on the vertical axis. 8 Take the x direction to be downstream and the y direction to be normal to the boundary, with y = 0 at the bottom of the flow (Figure 4-1). Table 19: Computed stable width and EG slopes for the current channel conditions and sediment supply for flows of 5,000 cfs: San Acacia Reach. State whether each member is in tension or compression. Zonal flow is defined as west to east or east to west, while. If the diameter of the pipe D = 0. 1. Hydrology of Peel River and Cockburn River was included in the Tamworth City-Wide Flooding Investigation prepared by Lyall and Associates (2019) and are considered reasonable for use for this study area to simulate the Citywide study results. NACA 4412 Airfoil 4 digit code used to describe airfoil shapes 1st digit - maximum camber in percent chord 2nd digit - location of maximum camber along chord line (from leading edge) in tenths of chord 3rd and 4th digits - maximum thickness in percent chord NACA 4412 with a chord of 6” Max camber: 0. Lets see what they have.