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Join expert discussion on aerospace and astronautics. Technology and industry concerned with aviation, space flight and space exploration. Plane, Shuttle and Rocket design, news and concepts. SpaceX, Blue Origin and NASA space agencies.
Boeing Starliner launches to space (but not ISS) (reached ISS in 2022)
  • anorlunda
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Can Vacuum Airships Overcome Structural Challenges for Feasible Flight?
  • Joes12
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Bi-propellant Liquid Fuel Engine Pressures Before Thrust Chamber
  • Ozen
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Electric fan to get ramjet airborne?
  • rhb
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Help with thrust and HP needed to hover 300 pounds at 30' off the ground
  • sesefdfsd
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Boeing China Eastern 737 Crash: What Caused the Unusual Cruise Phase Tragedy?
  • russ_watters
  • · Replies 74 ·
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Which fan placement offers the most airflow for cooling electronics?
  • garyTheSnail
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Researching Turboprops: Fuel Comparison of Hydrogen, Methanol, & Jet A1
  • Michael111
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Calculate the total energy required to fly a drone on this flight plan
  • Xamaa
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Aerodynamics Monographs: Recent Advances in High Mach Subsonic Flight
  • rhb
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What is the deal with these crazy, stupid, and dangerous pilots?
  • russ_watters
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Astronauts landing on the planet Mars
  • akerkarprashant
  • · Replies 82 ·
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How difficult will it be to build a 'hybrid' Jet engine?
  • royp
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Anyone interested in Unidentified Aerial Phenomena (UAP) and how they work?
  • Spooky Action
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The Traditional Bernoulli Eqn Derivation of Rocket Exhaust Velocity
  • BrandonInFlorida
  • · Replies 24 ·
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VTOL Jet Engine Aircraft and VTOL Jet Engine
  • VTOL147
  • · Replies 9 ·
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[Aerodynamics] Bernoulli's equation and Pressure Coefficient
  • Leo Liu
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NASA Could Mars have supported life? NASA challenge wants your help
  • Tom.G
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What is the Purpose of This Aluminum Laser with No Markings?
  • dmar
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New type of rocket propulsion design, and why it might not work?
  • escape75
  • · Replies 27 ·
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VTOL RC Airplane Tricopter COG, Liftoff Weight Calculations
  • socalaerospace
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What are these loops on this jet's wing?
  • MathExplorer
  • · Replies 12 ·
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Aerosol particles, how do I calculate this?
  • Lodeeve
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How Does the OTPI Calculate the Exact Position of RF Emitters?
  • nauman
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Why do we need stators in compressors or turbines?
  • Hidd
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Who is the professor behind the Landsat program?
  • dlgoff
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[Structural Dynamics] How to model a 3D wing as a 2D Wind Tunnel Model
  • WhiteWolf98
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What is necessary for a hypothetical supersonic speed Radio Controlled Jet?
  • Noob of the Maths
  • · Replies 39 ·
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Pressure drag and the Reynolds number
  • LT72884
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How to Build an Isopropanol Rocket Engine?
  • Mazewind
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Mars - Igneous Rock, Exposed to Water, and with Organic Material
  • Tom.G
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Where Are Starship's RCS Thrusters Located?
  • darkdave3000
  • · Replies 9 ·
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How calculate lift/drag using static pressure taps in wind tunnel test?
  • Jurgen M
  • · Replies 9 ·
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Question About Electric Aircraft Propulsion
  • Anand Sivaram
  • · Replies 139 ·
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Calculate lift from pressure distribution
  • Jurgen M
  • · Replies 12 ·
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Could the Wright Flyer take off without wind?
  • MarceloJenisch
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DART mission launches to test asteroid deflection
  • berkeman
  • · Replies 25 ·
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Boeing How Safe is the Boeing 737 Max's MCAS System?
  • cyboman
  • · Replies 673 ·
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Lucy spacecraft and James Webb space telescope
  • anorlunda
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Rolls-Royce claims to have developed the world's fastest all-electric aircraft
  • berkeman
  • · Replies 9 ·
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How can I calculate critical loading conditions for max flap extension?
  • Rameez_Ul_Haq
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Ensuring Radio Connectivity on a Newly-Launched Satellite
  • Kevin Heart
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How to define the mass ratio of a multi-stage rocket?
  • Leo Liu
  • · Replies 10 ·
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How does a pulsed plasma thruster work?
  • Leo Liu
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Clarifications about the aerodynamic centre of an airfoil
  • greg_rack
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Simulate mach reflection with mach stem generation using Ansys Fluent
  • Vin B
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The 835kph Sailplane and Dynamic Soaring
  • anorlunda
  • · Replies 12 ·
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Can the Genesis Project really seed the galaxy with robots?
  • Johnny powell
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Is Orbital Solar Feasible for the Future?
  • BWV
  • · Replies 32 ·
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Can Electron Rockets Revolutionize Interstellar Travel?
  • dansmith170
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Atypical demonstration of ground effect
  • .Scott
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How to calculate airplane noise as a function of distance?
  • Wes Turner
  • · Replies 49 ·
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Turbulence and why eddy breakups take place?
  • Vashliana
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Iconic first in flight (Ingenuity helicopter on Mars)
  • neilparker62
  • · Replies 29 ·
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Change the application pole of the moment of a force
  • Marco9518
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When did aircraft begin using systematic glide paths?
  • Stephen Tashi
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Chaotic ISS attitude after Nauka misfires thrusters (resolved)
  • mfb
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Would an ICE powered Hall thrusters be efficient?
  • Stormer
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Is a Continuous Mars-Earth Transporter Using Gravity Assist Viable?
  • Stormer
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Why is Projected Area constant when varying AoA?
  • MD LAT 1492
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The vacuum optimized Raptor: No attempt at an expander-bleed cycle
  • Benjies
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Bold, Monster, Engineering Successes
  • anorlunda
  • · Replies 32 ·
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Submarines that don't use compressed air to sink and rise?
  • feynman_fan
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Single main rotor helicopter
  • Marco9518
  • · Replies 8 ·
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Laser Propulsion in space -- please see the attached diagram....
  • drjamesroe
  • · Replies 11 ·
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Probe to the Ocean of Enceladus
  • majortom
  • · Replies 19 ·
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Help With Understanding Thrust Calculations (rifle muzzle brake)
  • Ozen
  • · Replies 1 ·
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Build Domed Cities on Mars - Air, Oxygen & Nitrogen Solutions
  • GTOM
  • · Replies 21 ·
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New Electric Airplane for Package Delivery
  • anorlunda
  • · Replies 19 ·
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Gathering Ice on Mars for Paraterraforming
  • GTOM
  • · Replies 7 ·
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MQ-25 T1 Mid-Air Refueling Drone -- First Flight
  • berkeman
  • · Replies 12 ·
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NASA NASA - Venus Technology Plan (DRAFT) December, 2018
  • Astronuc
  • · Replies 0 ·
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Need help on model HHO propulsion systems
  • Limebat
  • · Replies 18 ·
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What were the early design concepts for the Apollo program?
  • Janus
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Frequency of boundary layer instability
  • shreddinglicks
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What are typical Pressures in a test section of a shock tunnel?
  • shreddinglicks
  • · Replies 19 ·
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SpaceX Starship tests: SN15 flight early May
  • mfb
  • · Replies 77 ·
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Around which point does an aircraft rotate during the landing flare?
  • Stefan428
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Question regarding converging-diverging nozzles
  • Amaelle
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Cause-effect relation between pressure & velocity
  • lahanadar
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Calculating Rate of Climb from T/W, L/D and Velocity
  • TheArrow
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NASA My rough idea on a near light drive
  • MoistOxi
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NASA Is the EmDrive still considered a verboten topic in space exploration?
  • tionis
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Catastrophic engine failure on Flight UA328
  • Astronuc
  • · Replies 53 ·
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Inspiration4: Raffle for a trip to space (US only)
  • mfb
  • · Replies 4 ·
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Hydrogen in the Aviation Industry -- Survey
  • jrob11
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Project Loon, Stratospheric balloon
  • Baluncore
  • · Replies 4 ·
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NASA What did Apollo CM use helium for?
  • saddlestone-man
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Question about boundary layer growth in convergent and divergent ducts
  • Master1022
  • · Replies 1 ·
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#dearMoon: Flight around the Moon accepts applications
  • mfb
  • · Replies 0 ·
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Active burn control by using microwaves to control the detonation of the engine
  • Andrewtv848
  • · Replies 9 ·
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Can Fusion Thrusters Revolutionize Space Travel?
  • gleem
  • · Replies 5 ·
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Would He3 make fusion easier? :- Can a fusion rocket launch from Moon?
  • Al_
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Propeller with bell lift distribution has best thrust/power ratio?
  • John Mcrain
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Propeller blade lift distribution for best thrust/power ratio?
  • John Mcrain
  • · Replies 7 ·
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F-104 Starfighter Flight Envelope (contains envelope page image)
  • chr2021
  • · Replies 5 ·
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How to Make a Vertical Stabilizer for a Model Space Shuttle Discovery
  • dlgoff
  • · Replies 10 ·
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Solving Chemical Equilibrium Concentrations Within a Rocket Nozzle
  • BrandonBerchtold
  • · Replies 8 ·
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Turboprop engine propeller efficiency data
  • Izzyg
  • · Replies 1 ·
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The Unwise Idea of Wooden Satellites
  • DaveE
  • · Replies 7 ·
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