Showing posts with label Aerospace Engineering. Show all posts
Showing posts with label Aerospace Engineering. Show all posts

Thursday, 25 September 2025

Tuesday, 9 April 2024

2024 Total Solar Eclipse | NASA












Watch with us as a total solar eclipse moves across North America on April 8, 2024, traveling through Mexico, across the United States from Texas to Maine, and out across Canada’s Atlantic coast.

A total solar eclipse occurs when the Moon passes between the Sun and the Earth, completely blocking the face of the Sun.

Saturday, 25 November 2023

Friday, 21 April 2023

Monday, 29 August 2022

Tuesday, 12 July 2022

Saturday, 9 July 2022

Friday, 27 May 2022

Tuesday, 18 January 2022

Transporter-3 Mission | SpaceX


SpaceX is targeting Thursday, January 13 for a Falcon 9 launch of Transporter-3 to orbit from Space Launch Complex 40 (SLC-40) at Cape Canaveral Space F
orce Station in Florida.




Transporter-3 is SpaceX’s third dedicated rideshare mission, and on board this launch are 105 spacecraft (including CubeSats, microsats, PocketQubes, and orbital transfer vehicles).

Wednesday, 28 July 2021

Thursday, 4 March 2021

Successful Flight Test of Starship SN10 | SpaceX



Wednesday, March 3, the SpaceX team will attempt a high-altitude flight test of Starship serial number 10 (SN10) – our third high-altitude suborbital flight test of a Starship prototype from SpaceX’s site in Cameron County, Texas.


The Starship prototype will descend under active aerodynamic control, accomplished by independent movement of two forward and two aft flaps on the vehicle. All four flaps are actuated by an onboard flight computer to control Starship’s attitude during flight and enable precise landing at the intended location. SN10’s Raptor engines will then reignite as the vehicle attempts a landing flip maneuver immediately before touching down on the landing pad adjacent to the launch mount. 

A controlled aerodynamic descent with body flaps and vertical landing capability, combined with in-space refilling, are critical to landing Starship at destinations across the solar system where prepared surfaces or runways do not exist, and returning to Earth. This capability will enable a fully reusable transportation system designed to carry both crew and cargo on long-duration, interplanetary flights and help humanity return to the Moon, and travel to Mars and beyond.  

Friday, 10 July 2020

Comprendre les flammes des fusées

Les différents phénomènes visibles dans les flammes des lanceurs dans les premières secondes de leur vol, entre leur allumage et les premiers mètres parcourus.




Voici les références :

Informations sur le moteur H-1: http://heroicrelics.org/info/saturn-i-and-ib/saturn-i-ib-turbine-exhaust.html

Principale source de cette vidéo, beaucoup d'informations diverses (couleur des flammes, fonctionnement des moteurs, etc.): https://ia801307.us.archive.org/8/items/Rocket_Propulsion_Elements.....

Couleur et transparence des flammes: https://space.stackexchange.com/questions/7751/are-rocket-exhaust-flames-ever-opaque

Autre source de description des flammes: https://library.sciencemadness.org/library/books/ignition.pdf

Les flammes qui remontent le long de la Delta IV Heavy: https://www.planetary.org/blogs/jason-davis/2014/20141126-ula-burning-questions.html

Disques de Mach et autres informations générales sur les adaptations en pression des tuyères: http://www.cems.uvm.edu/~jmmeyers/ME239/Slides...
https://www.k-makris.gr/nozzle-design/

Génération d'ondes de choc obliques par détente de Prandtl-Meyer: https://fr.wikipedia.org/wiki/D%C3%A9tente_de_Prandtl-Meyer

Dilatation des flammes avec l'altitude: http://www.nimr.org/systems/rockets/72-001.htm

Décollement de flux dans les tuyères de la navette: https://www.mech.kth.se/thesis/2004/phd/phd_2004_jan_ostlund.pdf page 136

Modification de la forme de la tuyère du SSME: https://www.mech.kth.se/thesis/2004/phd/phd_2004_jan_ostlund.pdf page 92

Etudes sur la recirculation autour des moteurs: AIAA2011-0170-460
"Calculations of Rocket Plume Afterburning Coupled to Reacting Base Recirculation Regions" par A.Victor

Nuages de condensation: cherchez "Singularité de Prandtl-Glauert" sur Google, vous serez comblés.

Chauffage du bouclier thermique au bas des fusées: https://www.iccfd.org/iccfd7/assets/pdf/papers/ICCFD7-3406_paper.pdf

Séparation de flux sur la Saturn V: https://gwsbooks.blogspot.com/2015/04/saturn-v-s-ic-flow-separation-questions.html

Interprétation des figures stationnaires et variables dans les flammes de très haute altitude: http://aerospace.wpengine.netdna-cdn.com/wp-content/uploads/2012/03/bk_rocket-exhst-plum-phenom_ch1.pdf

Séquence de séparation de la Saturn 1B:  https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19740021163.pdf pages 21, 33 et 34

Monday, 29 June 2020

The king of rocket engines

SpaceX's new raptor engine is a methane fueled full flow staged combustion cycle engine and its so hard to develop, no engine like this has ever flown before!




Now this topic can be really intimidating so in order to bring the Raptor engine into context, we’re going to do an overview of a few common types of rocket engine cycles then compare the Raptor to a few other common rocket engines, like SpaceX’s current work horse, the Merlin, The Space Shuttle’s RS-25, the RD-180, Blue Origin’s BE-4 and the F-1 engine.

Wednesday, 27 May 2020

Launch Astronauts to Space Station | NASA & SpaceX

Falcon 9’s launch of Crew Dragon’s second demonstration (Demo-2) mission from Launch Complex 39A (LC-39A) at NASA’s Kennedy Space Center in Florida. This test flight with NASA astronauts Bob Behnken and Doug Hurley on board the Dragon spacecraft will return human spaceflight to the United States.



SpaceX is now targeting Saturday, May 30 for Falcon 9’s launch of Crew Dragon’s second demonstration (Demo-2) mission from Launch Complex 39A (LC-39A) at NASA’s Kennedy Space Center in Florida.

Sunday, 2 February 2020

Sunday, 8 December 2019

CRS-19 Mission - SpaceX

SpaceX is targeting Thursday, December 5 for launch of its nineteenth Commercial Resupply Services mission (CRS-19), from Space Launch Complex 40 (SLC-40) at Cape Canaveral Air Force Station, Florida. Dragon will separate from Falcon 9’s second stage about nine minutes after liftoff and attach to the space station on Saturday, December 7.



Wednesday, 27 November 2019

Tuesday, 12 November 2019

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