Hydraulic Calculator Engineer vs Rocket Calculator

Hydraulic Engineer Calculators is a practical hydraulic engineering calculator and formula app for engineers, technicians, students, contractors, operators, and anyone working with fluid flow, pipes, pumps, pressure, open channels, hydraulic cylinders, or fluid mechanics. Quickly enter your values, select units, calculate an estimate, review result details, and check the formula used. Hydraulic calculators included: Flow & Pipe Calculators - Pipe Flow Velocity - Calculate fluid velocity from flow rate and pipe diameter - Flow Rate - Calculate volumetric flow from flow area and average velocity - Required Pipe Diameter - Estimate pipe diameter from design flow and velocity - Reynolds Number - Calculate Reynolds number for internal fluid flow Head Loss Calculators - Darcy-Weisbach Head Loss - Estimate pipe friction head loss - Hazen-Williams Head Loss - Estimate water pipe friction loss - Minor Loss - Calculate losses from fittings, valves, entrances, exits, and components Pressure & Head Calculators - Pressure to Head - Convert pressure to hydraulic head - Head to Pressure - Convert hydraulic head to pressure - Hydrostatic Pressure - Calculate pressure caused by fluid depth - Bernoulli Total Head - Calculate total hydraulic head Pump Calculators - Pump Power - Estimate hydraulic pump power from flow, head, and efficiency - Pump Head from Pressure - Calculate pump head from pressure difference - NPSH Available - Estimate Net Positive Suction Head Available Open Channel Flow Calculators - Manning Rectangular Channel - Estimate rectangular channel flow - Froude Number - Calculate the Froude number - Critical Depth - Estimate critical water depth - Orifice Flow - Calculate fluid discharge through an orifice Hydraulic System Calculators - Water Hammer Pressure - Estimate pressure rise from a rapid velocity change - Hydraulic Cylinder Force - Calculate cylinder force from pressure and piston area - Hydraulic Cylinder Speed - Calculate piston speed from flow rate and bore diameter Fluid Properties Calculator - Specific Gravity - Calculate specific gravity from fluid density Useful for: - Hydraulic engineering - Fluid mechanics - Pipe flow and pipe sizing - Water flow and pressure - Head loss and pipe friction - Pump systems and pump power - NPSH calculations - Open channel flow - Hydraulic cylinders - Water hammer - Irrigation, plumbing, water, and wastewater systems - Civil and mechanical engineering Supported units include: - m, mm, cm, ft, in - m², cm², mm², ft², in² - m³/s, m³/h, L/s, L/min, US gpm, ft³/s - Pa, kPa, MPa, bar, psi - m/s, ft/s - W, kW, hp Built-in formula guide Each calculator includes its formula, and the app links to a Hydraulic Engineer Guide with additional information about formulas, variables, units, calculation steps, practical uses, and important considerations. Selected calculators also include dynamic diagrams to help visualize values used in pipe, pressure, head, open channel, tank, and hydraulic cylinder calculations. Simple workflow: - Choose a calculator - Enter your known values - Select units - Tap Calculate - Review the result and details - Check the formula - Open the related guide for more information The built-in search makes it easy to find a specific hydraulic calculator by category or name. Important disclaimer These calculators provide preliminary hydraulic estimates only. Results are not a substitute for professional engineering judgment, certified calculations, manufacturer specifications, site-specific analysis, or applicable codes and standards. Always verify input values, units, fluid properties, pipe specifications, equipment limitations, safety factors, operating conditions, site conditions, and governing requirements before using a calculation for design, procurement, installation, testing, operation, maintenance, or any safety-critical application.

ApogeeField is an offline flight calculator for low and mid-power model rocketry. Enter your rocket (dry mass, body diameter, drag coefficient, launch-guide length) and pick a motor, and it predicts your apogee, the best ejection delay, max velocity, and rail-exit velocity right at the pad — with no signal, no account, and no tracking. WHAT IT DOES - Apogee, max velocity and full altitude / velocity / acceleration flight curves — free. - Recommended ejection delay: ideal coast time mapped to the nearest delay you can actually buy, with the offset in seconds. - Rail-exit velocity with a configurable safety threshold, so you can judge whether the rocket will leave the rail under control. - Compare motors side by side and export your flight card and saved rockets. - Built-in motor database (thrust curves and certified statistics) plus import of your own .eng / .rse files. - Switch freely between metric and imperial units. HOW THE MODEL WORKS (and its limits) ApogeeField runs a deterministic 1-DOF (vertical, point-mass, with launch-angle cosine) flight integration: thrust-curve integration, variable-mass burn (propellant mass is subtracted as impulse is consumed), quadratic drag, and an ISA standard-atmosphere density model, coasting to apogee at the velocity zero-crossing. Every assumption is shown on the results screen so you can line your inputs up against OpenRocket or your own altimeter data. It is an engineering estimate for hobby use — a starting point, not a guarantee. The model does not account for wind, airframe stability, roll, or weathercocking, so real flights will differ. Always verify with an altimeter. This is not a safety, airworthiness, or legal document, and it does not replace the NAR / Tripoli safety code or local airspace rules — follow them. PRIVACY & PRICING 100% offline. No account, no network requests, no analytics, no ads. Your rockets and imported motor files stay on your device. One-time unlock — no subscription. Motor data are numerical facts drawn from publicly submitted thrust-curve files and NAR / Tripoli / CAR certification statistics, stored in our own format with the source and database version shown in the app.