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MiG-21 for FlightGear

License: GNU General Public License v3.0

C 8.18% Nasal 91.82%

mig-21bis's Introduction

MiG-21bis

by: Petar Jedvaj, David Culp, Raptor, Stuart Cassie, Gary Brown, Brendan Black, bugman, and Tomaskom.

Currently maintained by Justin Nicholson, a.k.a. pinto.

Overview

The MiG-21bis is a point-defence fighter aircraft developed by Mikoyan-Gurevich in 1972. It was one of the later variants in a long and extensive family tree, and was used as the basis for several more modern variants.

The MiG-21 is one of the most prolific fighters in the world, with production beginning in 1959 and later variants still being fielded to this day. Originally intended as a high altiude interceptor to defend against high-flying bombers, later variants equipped with more powerful engines fully rounded out this fighter which is still included in modern air forces.

Additional documentation can be found at http://wiki.flightgear.org/Mikoyan-Gurevich_MiG-21 as well as https://github.com/l0k1/MiG-21bis/wiki

For FlightGear

The FlightGear MiG-21bis is currently undergoing substantial work, with a redone 3D cockpit, more weapons systems, accurate guidance and radar, FDM work, and much more. We are focused on quality work - everything should be done with an eye to realism and not taking shortcuts (if we can).

Further down the line, other variants of the MiG-21 are planned. Following the MiG-21bis will be the MiG-21bisD (the modern Croatian Air Force variant), a MiG-21MF, and a MiG-21 LanceR C/III. Contributions towards other variants are welcome - I will not limit the variants to this list, that's just my plan for the time being.

Current State

This plane is a heavy work in progress, so things are constantly in flux. The realism is currently flexible while things are being implemented (such as the radar - there is no warmup period or timelimit yet, and it is too powerful), but as we get closer to a final product realism will be a higher priority.

Guided missiles use the guided-missiles.nas framework, dumb bombs, guns, and rockets use FlightGear's submodel framework.

The radar-logic.nas file is fairly standard but has some custom code in it, so direct replacement is not possible at this time.

Contributing

Check the Github Projects pages for current needs, and feel free to open a pull request.

mig-21bis's People

Contributors

Stargazers

Watchers

Forkers

alexeijd fgmembers kokos345 wkitty42 swampmo rudolf339 nikolaivchr colingeniet sp-ntx

mig-21bis's Issues

Shock cone is off center and renders armament invisible

As reported by @legoboyvdlp

In my opinion it should just be replaced entirely using particles.

Smoke and explosions are duplicated

The missile smoke and missile explosions appear both at the pylon position and the missile position.

HMCS doesnt display properly over multiplayer

Nosewheel angle is janky over MP

Need to transmit the nosewheel angle over MP

Single fire missile only works once

ripple fire works ok

single fire works on the 1st instance (doesn't matter which pylon is selected) but throws up this error after launching the 1st/hitting the target:

Nasal runtime error: non-objects have no members
at MiG-21bis/Nasal/payloads.nas, line 371

no more errors show in the logs, selecting ripple fire doesn't work either

Incorrect path case for `tacview.nas`

In MiG-21-set-common.xml, line 1739

<file>Aircraft/MIG-21bis/Nasal/tacview.nas</file>

should be

<file>Aircraft/MiG-21bis/Nasal/tacview.nas</file>

(incorrect case for the i in MiG).
Causes the file to fail to load, and a bunch of nasal errors in console, on case-sensitive file systems.

Max angular depression on ASP gunsight should be 11 degrees

The title says it all.

Review R-27 Fox messages

They are wrong.

vectors.nas is out of date

Needs to be updated from https://github.com/NikolaiVChr/flightgear-saab-ja-37-viggen/blob/master/Aircraft/JA37/Nasal/vector.nas

Rewrite and complete gunsight

It's a hot mess.

Also, it needs a lead computing gunsight, and the other aiming reticle.

helicopter view and chase view are available

when I try to use my mig-21bis, I mention that I cannot turn my view in helicopter and chase views. so I wish the developer can fix this problem

Radio freqs are switched without delay

When changing any radio frequencies in the MiG-21bis, there should be a delay of some seconds.

Fix radio file select dialog

remove close()
dont recreate dialog every time its called

Pointer to FG wiki docu from readme.md

Consider adding a link from readme.md to http://wiki.flightgear.org/Mikoyan-Gurevich_MiG-21 for documentation.

Rewrite gyro compass using JSBSim

Currently the gyro compass is written using FG's native property rules, which run at frame rate. Switching from property rules to JSBSim will increase accuracy, especially on computers with low frame rate.

Missing model file 'tgtsphere.xml'

In Nasal/armament-locking.nas, line 200 loads a model which doesn't exist:

objModel.getNode("path",1).setValue("Aircraft/MiG-21bis/Models/tgtsphere.xml"); # this is the model to be loaded.

This generates a constant flow of Error in reading file : file not handled messages in the console.

Add radar view

Add a seperate view that focuses in on the radar screen.

Suggestion from discord chat by Sierra.

Contacts not disappearing in radar beam mode

When radar beam mode is enabled, sometimes the contact marker and text is not hidden. When beam mode is exited, the contact marker stays in place.

airbrakes ext'd light not working

In Fuel and Payload Settings the last location should start with "Right" instead of "Left"

Currently there are two "Left" entries

Speedometer should display a "1" when speed is over 1000

Window visible above.

Rocket backblast travels in front of the aircraft.

should be limited to directly behind the launcher.

"Detected particle system using segment(s) with less than 2 vertices"

This error message is present at startup. The cause needs to be id'd and we should get this message out of there.

Help should mention need for aux hydraulic pump to be switched

Need hydraulic, electric, and pneumatic systems

These are very important for a high fidelity aircraft. These should also be implemented in JSBSim.

Adjust allowable stores per pylon

Per pdf page 29 of the MiG-21bis manual. For instance, UB-32 pods should only be allowed on the inner pylons.

add click sound

In-sim help gui is really out of date

This is relating to the help dialog box that shows keyboard bindings.

RWR not showing all the time

Per @Kokos345 on the discord server, an F-15 flying behind him failed to appear on the RWR.

mf-75 wont load due to missing systems

Dead Reckoner is completely FUBAR

dead reckoner should be hardly moving in the above image

Autopilot needs retuning

Every autopilot function could use a nice retuning - they are sloppy after the multitude of FDM changes.

Gyro compass based on jsbsim instead of FG properties

Copied from wiki-article (https://github.com/l0k1/MiG-21bis/wiki/Navigation): the gyro compass is implemented using FG's property rules system, which may cause some issues with accuracy if frame rate is very low. this should be ported to use jsbsim instead, however this is low priority for me at this time.

Kh-66 not exploding or reporting hits

Need multiple missiles per pylon

The FAB-100 can have up to 4 bombs on the inner pylons, and the R-60 can have 2.

Rewrite dead reckoner in JSBSim

Currently the dead reckoner is written using FG's native property rules, which run at frame rate. Switching from property rules to JSBSim will increase accuracy, especially on computers with low frame rate.

Switch MSL and DAMP modes for pipper movement

Upon further reading of the manual, it appears that the MSL-GYRO will completely disable the GYRO portion of the gunsight, leaving it centered (with respect to the angular setting).

Add menu item to reload gun

Preventing to have to restart FG to get full amounts of rounds back.

Should only work when wow.

Inbound/Outbound switch behavior is wrong

Currently, the switch only works if set in the "OUTBOUND" position, and searches for another nearby NDB to switch to.

How it should work AFAIK:
If switch is set to outbound, and the channel is odd and not 9, and the gear is down: upon flying over the outer NDB marker with some degree of accuracy, the radio automatically switches to the channel indicated on the ARC dial (2,4,6 or 8) - the roman numeral I is for tuning slow (8 secs), and the II is for tuning fast (4 sec).

If switch is set to inbound, and the gear is down: the ADF is tuned to what is indicated on the knob.

Typo in gunsight algorithm

In the AFALCOS implementation, there is a typo in the definition of W2: line 152 in

        me.W2 = me.W2 + (-me.SL1 * me.SL3 + me.C7 * me.SL3) * me._getP() +

-me.SL1 * me.SL3 should be -me.SL1 * me.SL2 instead.

Corresponding code from the original paper, just in case:
W2=W2+(-SL1*SL2+C7*SL3)*P+(1.-SL2**2)*Q-(SL2*SL3.C7*SL1 )*R

Kh-66 nasal error

I have the following error when firing a Kh-66:

  269.56 [INFO]:nasal      multi-threading error:
  269.56 [INFO]:nasal      No such member: get_uBody
  269.56 [INFO]:nasal      /home/colin/flightgear/Aircraft/MiG-21bis/Nasal/guided-missiles.nas
  269.56 [INFO]:nasal      3515
  269.56 [INFO]:nasal      /home/colin/flightgear/Aircraft/MiG-21bis/Nasal/guided-missiles.nas
  269.56 [INFO]:nasal      2873
  269.56 [INFO]:nasal      /home/colin/flightgear/Aircraft/MiG-21bis/Nasal/guided-missiles.nas
  269.56 [INFO]:nasal      2106

If I did not mess up, my radar was in beam mode (on radar panel: left switch up, middle switch down, right switch up).
When firing with radar turned off, the error doesn't occur and the missile works correctly, but is of course unguided.

Drag is too low at sea level - almost supersonic is possible.
Yaw is... just... yeah.
RWR needs a good talkin' to.