1. Space Goal Cannon Mac Os Download
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WARNING: Back up your persistence.sfs files before using this. It has a tendency to explode on occasion after using the warp drive and the debris can cause s. The Magnetic Accelerator Cannon, also known as a Mass Accelerator Cannon,1, is a large coilgun that serves as the primary offensive weapon for UNSC warships. Larger versions are used as orbital defense platforms. MACs are the only non-nuclear weapons in the UNSC arsenal capable of effectively reducing or destroying Covenant capital ships' energy shields. Smaller ship-borne versions can take as. Just like Space Marines are Starcraft Marines or Master Chief but with more shoulder pads and rule of cool over the top ness, the Nova Cannon is the the relatively common sci-fi big railgun thing (MAC, Yamato cannon) but because it’s 40k it also shoots black hole shells or holes in reality sometimes.

This is the MAC cannon from my Mini MAC Heavy Battlestation. I uploaded this in case anyone wanted to either attach it to their ship or build a ship around it. All of its parts are fully calibrated and in working order. It was test fired before being published. This weapon is fully automated and fully conveyored. All Mac models and devices from 2009 like Mac Book, iMac, and Mac Book Retina and 2010 models such as Mac Mini, Mac Pro, Mac Book Air, and Mac Book Pro are compatible with the MacOS High Sierra. However, if you are unsure which mac os version you’re using, you can find it by going to the device information of your Mac, to do this, open the.

A space gun, sometimes called a Verne gun because of its appearance in From the Earth to the Moon by Jules Verne, is a method of launching an object into space using a large gun- or cannonlike structure. Space guns could thus potentially provide a method of non-rocket spacelaunch. It has been conjectured that space guns could place satellites into Earth's orbit (although after-launch propulsion of the satellite would be necessary to achieve a stable orbit), and could also launch spacecraft beyond Earth's gravitational pull and into other parts of the Solar System by exceeding Earth's escape velocity of about 11.20 km/s (40,320 km/h; 25,050 mph). However, these speeds are too far into the hypersonic range for most practical propulsion systems and also would cause most objects to burn up due to aerodynamic heating or be torn apart by aerodynamic drag. Therefore, a more likely future use of space guns would be to launch objects into Low Earth orbit, from where attached rockets could be fired or the objects could be 'collected' by maneuverable orbiting satellites.^{[citation needed]}

In Project HARP, a 1960s joint United States and Canada defence project, a U.S. Navy 410 mm (16 in) 100 caliber gun was used to fire a 180 kg (400 lb) projectile at 3,600 m/s (12,960 km/h; 8,050 mph), reaching an apogee of 180 km (110 mi), hence performing a suborbital spaceflight. However, a space gun has never been successfully used to launch an object into orbit or out of Earth's gravitational pull.

Technical issues[edit]

The large g-force likely to be experienced by a ballistic projectile launched in this manner would mean that a space gun would be incapable of safely launching humans or delicate instruments, rather being restricted to freight, fuel or ruggedized satellites.

Getting to orbit[edit]

A space gun by itself is not capable of placing objects into stable orbit around the object (planet or otherwise) from which it launches them. The orbit is a parabolic orbit, a hyperbolic orbit, or part of an elliptic orbit which ends at the planet's surface at the point of launch or another point. This means that an uncorrected ballistic payload will always strike the planet within its first orbit unless the velocity was so high as to reach or exceed escape velocity. As a result, all payloads intended to reach a closed orbit need at least to perform some sort of course correction to create another orbit that does not intersect the planet's surface.

A rocket can be used for additional boost, as planned in both Project HARP and the Quicklaunch project. The magnitude of such correction may be small; for instance, the StarTram Generation 1 reference design involves a total of 0.6 km/s (1,300 mph) of rocket burn to raise perigee well above the atmosphere when entering an 8 km/s (18,000 mph) low Earth orbit.^[1]

In a three-body or larger system, a gravity assist trajectory might be available such that a carefully aimed escape velocity projectile would have its trajectory modified by the gravitational fields of other bodies in the system such that the projectile would eventually return to orbit the initial planet using only the launch delta-v.^[2][3]

Space Goal Cannon Mac Os Download

Isaac Newton avoided this objection in his thought experiment by placing his notional cannon atop a tall mountain and positing negligible air resistance. If in a stable orbit, the projectile would circle the planet and return to the altitude of launch after one orbit (see Newton's cannonball).^[4]

Acceleration[edit]

For a space gun with a gun barrel of length (${\displaystyle l}$), and the needed velocity (${\displaystyle v_e}$), the acceleration (${\displaystyle a}$) is provided by the following formula:^{[citation needed]}

${\displaystyle a=\frac{v_e^2}{2l}}$

For instance, with a space gun with a vertical 'gun barrel' through both the Earth's crust and the troposphere, totalling ~60 km (37 miles) of length (${\displaystyle l}$), and a velocity (${\displaystyle v_e}$) enough to escape the Earth's gravity (escape velocity, which is 11.2 km/s or 25,000 mph on Earth), the acceleration (${\displaystyle a}$) would theoretically be more than 1,000 m/s² (3,300 ft/s²), which is more than 100 g-forces, which is about 3 times the human tolerance to g-forces of maximum 20 to 35 g^[5] during the ~10 seconds such a firing would take.

Practical attempts[edit]

V3 Cannon (1944-45)[edit]

The German V-3 cannon program (less well known than the V-2 rocket or V-1 flying bomb), during the Second World War was an attempt to build something approaching a space gun. Based in the Pas-de-Calais area of France it was planned to be more devastating than the other Nazi 'Vengeance weapons'. The cannon was capable of launching 140 kg (310 lb), 15 cm (5.9 in) diameter shells over a distance of 88 km (55 mi). It was destroyed by RAF bombing using Tallboyblockbuster bombs in July 1944.^[6] The V-3 cannon used staged propulsion, which gave it a far greater range.^{[citation needed]}

Super High Altitude Research Project (1985-95)[edit]

The US Ballistic Missile Defense program sponsored the Super High Altitude Research Project (SHARP) in the 1980s. Developed at Lawrence Livermore Laboratory, it is a light-gas gun and has been used to test fire objects at Mach 9.

Project Babylon (1988-90)[edit]

The most prominent recent attempt to make a space gun was artillery engineer Gerald Bull's Project Babylon, which was also known as the 'Iraqi supergun' by the media. During Project Babylon, Bull used his experience from Project HARP to build a massive cannon for Saddam Hussein, leader of Ba'athist Iraq. Bull was assassinated before the project was completed.^[7]

Quicklaunch (1996-2016)[edit]

After cancellation of SHARP, lead developers John Hunter founded the Jules Verne Launcher Company in 1996 and the Quicklaunch company. As of September 2012, Quicklaunch was seeking to raise $500 million to build a gun that could refuel a propellant depot or send bulk materials into space.^[8][9][10]

Ram accelerators have also been proposed as an alternative to light-gas guns. Other proposals use electromagnetic techniques for accelerating the payload, such as coilguns and railguns.^{[citation needed]}

In fiction[edit]

The first publication of the concept may be Newton's cannonball in the 1728 book A Treatise of the System of the World, although it was primarily used as a thought experiment regarding gravity.^[11]

Perhaps the most famous representations of a space gun appear in Jules Verne's 1865 novel From the Earth to the Moon and his 1869 novel Around the Moon (loosely interpreted into the 1902 film Le Voyage dans la Lune), in which astronauts fly to the Moon aboard a ship launched from a cannon. Another famous example is used by the Martians to launch their invasion in H. G. Wells' 1897 book The War of the Worlds. Wells also used the concept in the climax of the 1936 film Things to Come. The device was featured in films as late as 1967, such as Jules Verne's Rocket to the Moon.

In the 1991 video game Ultima: Worlds of Adventure 2: Martian Dreams, Percival Lowell builds a space gun to send a spacecraft to Mars.

The 1992 video game Steel Empire, a shoot 'em up with steampunk aesthetics, features a space gun in its seventh level that is used by the main villain General Styron to launch himself to the Moon.

In Hannu Rajaniemi's 2012 novel The Fractal Prince, a space gun at the 'Jannah-of-the-cannon', powered by a 150-kiloton nuclear bomb, is used to launch a spaceship from Earth.

The 2015 video game SOMA features a space gun used to launch satellites.

Gerald Bull's assassination and the Project Babylon gun were also the starting point for Frederick Forsyth's 1994 novel The Fist of God. In Larry Bond's 2001 novella and 2015 novel Lash-Up, China uses a space gun to destroy American GPS satellites.

In the 2004 role-playing game Paper Mario: The Thousand-Year Door, a village of Bob-ombs operates a space gun to send Paper Mario and company to the X-Naut's base on the Moon.

Gerald Bull and Project Babylon are integral to the plot of Louise Penny's 2015 novel The Nature of the Beast.

See also[edit]

• Geostationary orbit: circular orbit 35,786 km (22,236 miles) above the Earth used by communications satellites

References[edit]

1. ^'StarTram2010: Maglev Launch: Ultra Low Cost Ultra High Volume Access to Space for Cargo and Humans'. startram.com. Retrieved April 28, 2011.
2. ^Clarke, Victor C., Jr. (1970-04-10), An Essay On the Application and Principle of Gravity-Assist Trajectories For Space Flight(PDF), Jet Propulsion Laboratory, California Institute of Technology, p. 7, archived from the original(PDF) on 2016-04-18, retrieved 2013-08-13, By induction then, it is obvious that the process of diverting a spacecraft from one planet to another might be continued indefinitely, if the planets were in favorable positions.
3. ^Minovitch, Michael (August 23, 1961), A Method For Determining Interplanetary Free-Fall Reconnaissance Trajectories(PDF), Jet Propulsion Laboratory Technical Memos, pp. 38–44
4. ^Newton, Isaac (1728). A Treatise of the System of the World. F. Fayram. pp. 6–12.
5. ^'David Purley Bio'. Anton Sukup's Autographs of F1 Drivers. Retrieved July 31, 2006. Purley was subjected to the highest G-forces ever survived by a human being - 179.8G - when the car went from 108mph to zero in just over half a meter
6. ^RAF staff (6 April 2005). 'RAF History - Bomber Command 60th Anniversary'. Bomber Command: Campaign Diary. RAF. Archived from the original on 6 July 2007. Retrieved 23 October 2013.
7. ^Lowther, William (1991). Arms and the Man: Dr. Gerald Bull, Iraq, and the Supergun. Presidio Press. ISBN978-0-89141-438-4.
8. ^'Quicklaunch Affordable Space Access'. TekLaunch Inc. Archived from the original on 2011-07-24.CS1 maint: unfit URL (link)
9. ^'Jules Verne Launcher Company Concept'. astronautix.com. Retrieved November 11, 2011.
10. ^Elahi, Amina (January 15, 2010). 'A Cannon for Shooting Supplies into Space'. Popular Science. Retrieved November 11, 2011.
11. ^Greg Goebel (1 November 2019). '[4.0] Space Guns'. Spaceflight Propulsion (v1.4.0 ed.).

External links[edit]

The Terminal app allows you to control your Mac using a command prompt. Why would you want to do that? Well, perhaps because you’re used to working on a command line in a Unix-based system and prefer to work that way. Terminal is a Mac command line interface. There are several advantages to using Terminal to accomplish some tasks — it’s usually quicker, for example. In order to use it, however, you’ll need to get to grips with its basic commands and functions. Once you’ve done that, you can dig deeper and learn more commands and use your Mac’s command prompt for more complex, as well as some fun, tasks.

Curated Mac apps that keep your Mac’s performance under control. Avoid Terminal commands, avoid trouble.

How to open Terminal on Mac

The Terminal app is in the Utilities folder in Applications. To open it, either open your Applications folder, then open Utilities and double-click on Terminal, or press Command - spacebar to launch Spotlight and type 'Terminal,' then double-click the search result.

You’ll see a small window with a white background open on your desktop. In the title bar are your username, the word 'bash' and the dimensions of the window in pixels. Bash stands for 'Bourne again shell'. There are a number of different shells that can run Unix commands, and on the Mac Bash is the one used by Terminal.

If you want to make the window bigger, click on the bottom right corner and drag it outwards. If you don’t like the black text on a white background, go to the Shell menu, choose New Window and select from the options in the list.

If Terminal feels complicated or you have issues with the set-up, let us tell you right away that there are alternatives. MacPilot allows to get access to over 1,200 macOS features without memorizing any commands. Basically, a third-party Terminal for Mac that acts like Finder.

For Mac monitoring features, try iStat Menus. The app collects data like CPU load, disk activity, network usage, and more — all of which accessible from your menu bar.

Basic Mac commands in Terminal

The quickest way to get to know Terminal and understand how it works is to start using it. But before we do that, it’s worth spending a little time getting to know how commands work. To run a command, you just type it at the cursor and hit Return to execute.

Every command is made up of three elements: the command itself, an argument which tells the command what resource it should operate on, and an option that modifies the output. So, for example, to move a file from one folder to another on your Mac, you’d use the move command 'mv' and then type the location of the file you want to move, including the file name and the location where you want to move it to.

Let’s try it.

1. Type cd ~/Documentsthen and press Return to navigate to your Home folder.

2. Type lsthen Return (you type Return after every command).

You should now see a list of all the files in your Documents folder — ls is the command for listing files.

To see a list of all the commands available in Terminal, hold down the Escape key and then press y when you see a question asking if you want to see all the possibilities. To see more commands, press Return.

Unix has its own built-in manual. So, to learn more about a command type man [name of command], where 'command' is the name of the command you want find out more about.

Terminal rules

There are a few things you need to bear in mind when you’re typing commands in Terminal, or any other command-line tool. Firstly, every character matters, including spaces. So when you’re copying a command you see here, make sure you include the spaces and that characters are in the correct case.

You can’t use a mouse or trackpad in Terminal, but you can navigate using the arrow keys. If you want to re-run a command, tap the up arrow key until you reach it, then press Return. To interrupt a command that’s already running, type Control-C.

Commands are always executed in the current location. So, if you don’t specify a location in the command, it will run wherever you last moved to or where the last command was run. Use the cdcommand, followed by a directory path, like in Step 1 above, to specify the folder where you want a command to run.

There is another way to specify a location: go to the Finder, navigate to the file or folder you want and drag it onto the Terminal window, with the cursor at the point where you would have typed the path.

Here’s another example. This time, we’ll create a new folder inside your Documents directory and call it 'TerminalTest.'

1. Open a Finder window and navigate to your Documents folder.

2. Type cd and drag the Documents folder onto the Terminal window.

3. Now, type mkdir 'TerminalTest'

Go back to the Finder, open Text Edit and create a new file called 'TerminalTestFile.rtf'. Now save it to the TerminalTest folder in your Documents folder.

In the Terminal window, type cd ~/Documents/TerminalTest then Return. Now type lsand you should see 'TerminalTestFile' listed.

To change the name of the file, type this, pressing Return after every step:

1. cd~/Documents/Terminal Test

2. mv TerminalTestFile TerminalTestFile2.rtf

That will change the name of the file to 'TerminalTestFile2'. You can, of course, use any name you like. The mv command means 'move' and you can also use it to move files from one directory to another. In that case, you’d keep the file names the same, but specify another directory before typing the the second instance of the name, like this:

mv ~/Documents/TerminalTest TerminalTestFile.rtf ~/Documents/TerminalTest2 TerminalTestFile.rtf

More advanced Terminal commands

Terminal can be used for all sorts of different tasks. Some of them can be performed in the Finder, but are quicker in Terminal. Others access deep-rooted parts of macOS that aren’t accessible from the Finder without specialist applications. Here are a few examples.

Copy files from one folder to another

1. In a Terminal window, type ditto [folder 1] [folder 1] where 'folder 1' is the folder that hosts the files and 'folder 2' is the folder you want to move them to.

2. To see the files being copied in the Terminal window, type -v after the command.

Download files from the internet

You’ll need the URL of the file you want to download in order to use Terminal for this.

1. cd ~/Downloads/

2. curl -O [URL of file you want to download]

If you want to download the file to a directory other than your Downloads folder, replace ~/Downloads/ with the path to that folder, or drag it onto the Terminal window after you type the cd command.

Change the default location for screenshots

If you don’t want macOS to save screenshots to your Desktop when you press Command-Shift-3, you can change the default location in Terminal

1. defaults write com.apple.screencapture location [path to folder where you want screenshots to be saved]

2. Hit Return

3. killall SystemUIServer

4. Hit Return

Change the default file type for screenshots

By default, macOS saves screenshots as .png files. To change that to .jpg, do this:

1. defaults write com.apple.screencapture type JPG

2. Press Return

3. killall SystemUIServer

4. Press Return

Delete all files in a folder

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The command used to delete, or remove, files in Terminal is rm. So, for example, if you wanted to remove a file in your Documents folder named 'oldfile.rtf' you’d use cd ~/Documents to go to your Documents folder then to delete the file. As it stands, that will delete the file without further intervention from you. If you want to confirm the file to be deleted, use -i as in rm -i oldfile.rtf

To delete all the files and sub-folders in a directory named 'oldfolder', the command is rm -R oldfolder and to confirm each file should be deleted, rm -iR oldfolder

Just because you can use Terminal to delete files on your Mac, doesn’t mean you should. It’s a relatively blunt instrument, deleting only those files and folders you specify.

Another way to free up space

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If your goal in removing files or folders is to free up space on your Mac, or to remove junk files that are causing your Mac to run slowly, it’s far better to use an app designed for the purpose. CleanMyMac X is one such app.

It will scan your Mac for files and recommend which ones you can delete safely, as well as telling you how much space you’ll save. And once you’ve decided which files to delete, you can get rid of them in a click. You can download CleanMyMac here.

As you can see, while Terminal may look scary and seem like it’s difficult to use, it really isn’t. The key is learning a few commands, such as those we’ve outlined above, and getting to know the syntax for those commands.

However, you should be careful when using Terminal, it’s a powerful tool that has deep access to your Mac’s system files. Check commands by googling them if you’re not sure what they do. And if you need to delete files to save space, use an app like CleanMyMac X to do it. It’s much safer!