All public logs
From NPrize
Jump to navigationJump to search
Combined display of all available logs of NPrize. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).
- 00:45, 6 November 2017 Vincent talk contribs uploaded File:Solar system exploration with cubesats.pdf (This presentation was made at SpaceUp Cote d'Azur (Nice, France) in October 2017. The goal was to explain the challenges of solar system exploration using small satellites, emphasizing that it will cost a lot of money on either launches or reliable spa...)
- 00:14, 12 March 2013 Vincent talk contribs uploaded File:Pegasus wings.gif (3 views of Orbital Pegasus' wings)
- 03:33, 12 December 2012 Vincent talk contribs uploaded a new version of File:Gravity drag and thrust to weight.png (Updated with the gravity drag curve and make the image larger.)
- 03:05, 12 December 2012 Vincent talk contribs uploaded File:Gravity drag and thrust to weight.png (Made with File:Rocket_mass.c v3 plus a gravity drag evaluation added in the iteration.)
- 01:42, 12 December 2012 Vincent talk contribs uploaded a new version of File:Rocket mass.c (clarification about the propellant mass. vehicle_wet_mass is the dry mass + the burnt propellant mass, but it doesn't include the propellant taken aboard and evaporated during the ascent. The output indicates the ground value now. This is still version 3.)
- 20:59, 11 December 2012 Vincent talk contribs uploaded a new version of File:Isp.png (starting at 280 instead of 270)
- 20:53, 11 December 2012 Vincent talk contribs uploaded File:DeltaV.png (Graph representing rocket dry and wet mass as function of the Delta V. Done with version 3 of File:Rocket_mass.c, overall thrust-to-weight ratio is 2.5 and Isp is 340s.)
- 20:52, 11 December 2012 Vincent talk contribs uploaded File:Isp.png (Graph representing rocket dry and wet mass as function of the Isp. This is clearly exponential on the left because a too low Isp means that orbit cannot be reached, the mass ratio gets too high. Done with version 3 of File:Rocket_mass.c. Delta V is 8300 m)
- 20:09, 11 December 2012 Vincent talk contribs uploaded a new version of File:Mass ratio.png (Updated with version 3 of File:Rocket_mass.c. Delta V is 8300 instead of 9000 m/s too, and overall thrust-to-weight ratio is 2.5 instead of 1.25.)
- 20:08, 11 December 2012 Vincent talk contribs uploaded a new version of File:Engine thrust to weight.png (Updated with version 3 of File:Rocket_mass.c. Delta V is 8300 instead of 9000 m/s too, and overall thrust-to-weight ratio is 2.5 instead of 1.25.)
- 20:06, 11 December 2012 Vincent talk contribs uploaded a new version of File:Overall thrust to weight.png (Updated with version 3 of File:Rocket_mass.c. Delta V is 8300 instead of 9000 m/s too.)
- 20:04, 11 December 2012 Vincent talk contribs uploaded a new version of File:Final acceleration.png (Updated with version 3 of File:Rocket_mass.c. Delta V is 8300 instead of 9000 m/s too.)
- 20:02, 11 December 2012 Vincent talk contribs uploaded a new version of File:Payload 0-80kg.png (fixing update)
- 19:58, 11 December 2012 Vincent talk contribs uploaded a new version of File:Payload 0-80kg.png (Updated with version 3 of File:Rocket_mass.c. Delta V is 8300 instead of 9000 m/s too.)
- 19:57, 11 December 2012 Vincent talk contribs uploaded a new version of File:Payload 0-6k.png (Updated with version 3 of File:Rocket_mass.c. Delta V is 8300 instead of 9000 m/s too.)
- 13:26, 11 December 2012 Vincent talk contribs uploaded a new version of File:Rocket mass.c (Refining the model: better structure, more realistic fairing, adding forgotten pipes and valves, tanks alignment on outer shell, composite skirts for non-structural or soft tanks.)
- 00:26, 11 December 2012 Vincent talk contribs uploaded File:Rocket model.png (Rocket model illustration for the computed rocket model: File:Rocket_mass.c)
- 03:10, 27 November 2012 Vincent talk contribs uploaded File:Rocket ignition.png (Graph of the rocket trajectory for first moments after release, assuming ignition at the time of the release, a thrust vector with 45 deg pitch, and an overall thrust-to-weight ratio of 2. No atmosphere considered whatsoever.)
- 02:01, 24 November 2012 Vincent talk contribs uploaded File:Heat transfer to rocket tank.c (Program calculating the heat transferred to a cryogenic tank (typically LOX) for balloon- or air-to-orbit vehicles. Two heat transfer approximations are done. * when the vehicle is waiting on the ground after tank filling and before it lifts-off from the )
- 02:59, 17 November 2012 Vincent talk contribs uploaded File:ISA atmospheric model.c (C Implementation of the international standard atmosphere ([https://en.wikipedia.org/wiki/International_Standard_Atmosphere ISA]) model. This is a port of http://www.digitaldutch.com/atmoscalc/ .)
- 01:37, 9 November 2012 Vincent talk contribs uploaded File:Rocket mass tanks v3.png (tank model for rocket mass version >= 3)
- 01:36, 9 November 2012 Vincent talk contribs uploaded a new version of File:Rocket mass tanks v1-2.png (white bg)
- 01:33, 9 November 2012 Vincent talk contribs uploaded File:Rocket mass tanks v1-2.png (tank model for rocket mass versions 1 and 2)
- 03:51, 7 November 2012 Vincent talk contribs uploaded a new version of File:Rocket mass.c (composite skirts, propellant venting and tank insulation (given data, not computed), mass ratio computed from delta V and Isp.)
- 02:47, 2 November 2012 Vincent talk contribs uploaded File:Rocket mass.c (Program that iterates to compute an SSTO rocket's dry and wet mass (and other parameters). Compile with gcc -O2 -Wall rocket_mass.c -o rocket_mass -lm for normal use, and add -DMAKE_GRAPH after gcc on the command line if you want to create graph data as )
- 02:15, 2 November 2012 Vincent talk contribs uploaded File:Payload 0-6k.png (Graph representing rocket dry and wet mass as function of the payload mass (or any other fixed mass subsystem), ranging from 0 to 6 kg payload.)
- 01:41, 2 November 2012 Vincent talk contribs uploaded File:Final acceleration.png (Graph representing final acceleration and engine's thrust as function of the initial acceleration (overall thrust-to-weight ratio).)
- 04:47, 1 November 2012 Vincent talk contribs uploaded File:Overall thrust to weight.png (Graph representing rocket dry and wet mass as function of the vehicle (overall) initial thrust-to-weight ratio. There is an equivalence with the acceleration in number of G's.)
- 04:45, 1 November 2012 Vincent talk contribs uploaded File:Engine thrust to weight.png (Graph representing rocket dry and wet mass as function of the engine's thrust-to-weight ratio.)
- 04:44, 1 November 2012 Vincent talk contribs uploaded File:Mass ratio.png (Graph representing rocket dry and wet mass as function of the mass ratio (fixed by Isp and Delta V).)
- 04:43, 1 November 2012 Vincent talk contribs uploaded File:Payload 0-80kg.png (Graph representing rocket dry and wet mass as function of the payload mass (or any other fixed mass subsystem).)
- 23:38, 31 May 2012 Vincent talk contribs uploaded a new version of File:Hybrid turbine.png (glimpses of an expander and minor improvements)
- 22:28, 28 May 2012 Vincent talk contribs uploaded File:Thermodynamic diagrams.png (T-S diagram for the mixed/hybrid turbofan.)
- 19:18, 28 May 2012 Vincent talk contribs uploaded a new version of File:Hybrid turbine.png (changing colors for background and flows)
- 19:03, 28 May 2012 Vincent talk contribs uploaded a new version of File:Hybrid turbine.png (background)
- 18:54, 28 May 2012 Vincent talk contribs uploaded File:Hybrid turbine.png (Hybrid turbine sketch)
- 18:54, 28 May 2012 Vincent talk contribs deleted page File:Hybrid turbine.svg (svg not working yet)
- 18:50, 28 May 2012 Vincent talk contribs uploaded File:Hybrid turbine.svg (Hybrid turbine sketch)
- 01:39, 27 November 2011 Vincent talk contribs uploaded File:Velocity triangles.png (Velocity triangles for axial compressor blades. Source is the chapter "2.0 Axial-Flow Compressors" from M. P. Broyce.)
- 01:29, 27 November 2011 Vincent talk contribs uploaded File:Blade nomenclature.png (Nomenclature of aerofoils (used in fan/compressor/turbine blades). Source is the chapter "2.0 Axial-Flow Compressors" from M. P. Broyce.)
- 20:08, 2 November 2011 Vincent talk contribs uploaded File:Combustor sketch section.jpg (Sketch of the combustor cross-section. The green part is the shaft, the transparent light blue part is the core shell.)
- 19:36, 2 November 2011 Vincent talk contribs uploaded File:Engine core and fan.jpg (Sketch of the engine, with the core and the fan duct, aft-mounted fan and first stage compressor rotor drafted. The chamber is in red/brown.)
- 19:35, 2 November 2011 Vincent talk contribs uploaded File:Engine core and fan side.jpg (Sketch of the engine, with the core and the fan duct, aft-mounted fan and first stage compressor rotor drafted. The chamber is in red/brown.)
- 23:27, 9 May 2011 Vincent talk contribs uploaded a new version of File:Compressor blades.svg (white bg)
- 23:26, 9 May 2011 Vincent talk contribs uploaded a new version of File:Compressor blades.png (white background)
- 23:20, 9 May 2011 Vincent talk contribs uploaded File:Compressor blades.png (Compressor blades 2D schematics.)
- 23:20, 9 May 2011 Vincent talk contribs uploaded File:Compressor blades.svg (Compressor blades 2D schematics (source SVG file).)
- 00:16, 5 May 2011 User account Myier talk contribs was created
- 20:58, 28 February 2011 Vincent talk contribs uploaded a new version of File:Blade fixation simple.jpg (fixing display artefact)
- 20:56, 28 February 2011 Vincent talk contribs uploaded File:Blade fixation simple.jpg (Simple way of fixing blades: insert is parallel to the shaft and a spacer is used to hold them together, actually composing the fan hub.)
- 20:23, 28 February 2011 Vincent talk contribs uploaded a new version of File:Compressor side.jpg (yellow shaft)
- 20:20, 28 February 2011 Vincent talk contribs uploaded a new version of File:Compressor noshell.jpg
- 20:09, 28 February 2011 Vincent talk contribs uploaded File:Rotor side.jpg (Rotor with its three-stages blades seen from the side.)
- 20:08, 28 February 2011 Vincent talk contribs uploaded File:Rotor front side.jpg (Rotor with its three-stages blades, seen from nearly front.)
- 19:57, 28 February 2011 Vincent talk contribs uploaded File:Stator side.jpg (Stator blades mounted on their shell and the shaft profile visible, nearly seen from the side.)
- 19:56, 28 February 2011 Vincent talk contribs uploaded File:Stator front.jpg (Stator blades mounted on their shell and the shaft seen from the front.)
- 19:46, 28 February 2011 Vincent talk contribs uploaded File:Compressor noshell.jpg (The 3-stage compressor with all blades mounted without its shell.)
- 19:46, 28 February 2011 Vincent talk contribs uploaded File:Compressor side.jpg (The 3-stage compressor with all blades mounted, seen from the side and without its shell.)
- 23:06, 23 February 2011 Vincent talk contribs uploaded File:Blade fixation2.jpg (Close-up view on the blade fixation system (rear view).)
- 23:05, 23 February 2011 Vincent talk contribs uploaded File:Blade fixation1.jpg (Close-up view on the blade fixation system.)
- 22:50, 23 February 2011 Vincent talk contribs uploaded File:Blade.jpg (Turbine or compressor blade, with its milled insert.)
- 02:03, 22 February 2011 Vincent talk contribs uploaded File:Interblade2.jpg (Exploded view of a simple compressor blade fixation design. The main shaft (orange) has one spline at least, allowing the blade support and the conic parts to be coupled to the shaft.)
- 01:58, 22 February 2011 Vincent talk contribs uploaded File:Interblade1.jpg (Exploded view of a simple compressor blade fixation design. Between each level, a conic piece like the yellow on this picture is placed and plugs onto a new gray piece like the one in the background, which supports the blades.)
- 04:01, 29 December 2010 Vincent talk contribs uploaded File:Pintle engine paper.pdf (TRW pintle engine heritage and performance characteristics Gordon A. Dressler, J. Martin Bauer. 2000. TRW copyright.)
- 03:58, 29 December 2010 Vincent talk contribs uploaded File:Rocket book.tar.gz (BOOK: HOW to DESIGN, BUILD and TEST SMALL LIQUID-FUEL ROCKET ENGINES Backup archive from http://www.risacher.org/rocket/ )
- 17:45, 24 December 2010 Vincent talk contribs uploaded File:Restone tank.jpg (Center unit of the redstone launcher, basically made of the propellant tank. From http://www.myarmyredstonedays.com/Photos/page8/shell_03.html .)
- 08:43, 17 November 2010 Vincent talk contribs uploaded File:S RD107 Head.jpg (Cut of the injector plate of the RD-107 engine)
- 14:17, 23 October 2010 Vincent talk contribs uploaded File:Datasheet DS1374.pdf (The datasheet of the DS1374 I2C 32-bit binary counter watchdog RTC with trickle charger and reset input/output.)
- 19:07, 29 January 2010 Vincent talk contribs uploaded a new version of File:Turbofan craftedshaft.svg (updating length and turbine number)
- 19:06, 29 January 2010 Vincent talk contribs uploaded a new version of File:500px-Turbofan craftedshaft.svg.png
- 17:46, 29 January 2010 Vincent talk contribs uploaded File:500px-Turbofan craftedshaft.svg.png (Design proposition for a simpler turbofan.)
- 17:46, 29 January 2010 Vincent talk contribs uploaded File:Turbofan craftedshaft.svg (Design proposition for a simpler turbofan.)
- 11:40, 29 January 2010 Vincent talk contribs uploaded a new version of File:500px-Turbofan operation.svg.png (white bg)
- 11:23, 29 January 2010 Vincent talk contribs uploaded File:500px-Turbofan operation.svg.png (Turbofan principle 500px)
- 11:21, 29 January 2010 Vincent talk contribs uploaded File:Turbofan operation.svg (Turbofan principle)
- 21:28, 25 January 2010 Vincent talk contribs uploaded a new version of File:Rocket trajectory.png (croping picture)
- 21:26, 25 January 2010 Vincent talk contribs uploaded a new version of File:Rocket trajectory.png (lines in white)
- 23:52, 22 January 2010 Vincent talk contribs uploaded a new version of File:Rocket trajectory.png (earth color change)
- 23:50, 22 January 2010 Vincent talk contribs uploaded a new version of File:Rocket trajectory.png
- 23:44, 22 January 2010 Vincent talk contribs uploaded File:Rocket trajectory.png (Schematic rocket trajectory to explain initial and final direction vectors and atmosphere crossing)