Current Version 0.6.3
Initial Release 08. September 2022
Last Updated 21. September 2022
File Size 154.74 MB
Downloads 3,379

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Designed and built in 1934, the D.H. 88 Comet was DeHavilland's solution to winning the MacRobertson air race of October 1934 between the newly completed Mildenhall aerodrome, England and Flemington Racecourse, Australia. Just a few days after their delivery, the first 3 comets took part in the race, with G-ACSS 'Grosvenor House' winning the race in a record breaking time of 70 hours, 54 minutes and 18 seconds, beating the newly introduced DC-2 and Boing 247D. Many have marked the 1934 MacRobertson Air Race as one of the key points which catapulted the civil air industry into a new era, publily highlighting the technologicial achievements and advancements of monoplane design, not just in Britain, but across the globe. The comet was the latest design by DeHavilland aircraft and their lead engineer A.E.Hagg, who collated a wide range of modern and experimental techniques which resulted in a wooden monoplane with a very streamlined and smooth appearance. This was all powered by DeHavilland's latest and best engine design - the DeHavilland Gipsy Six I, with special racing variants produced specifically for the comets, with a higher compression ratio allowing for 225 hp to be produced, and allowing for the engine to be run at full throttle at cruise altitude for maximum performance and efficiency.

The TPAeronautics D.H. 88 Comet is a scratch-built MSFS native aircraft, taking no modelling or flight modelling information from the original FS2004 comet. The exterior model has been built up from a mix of available plans, and historical photos wherever possible, resulting in a design very close to the original comets produced in 1934. In addition to this, a fully functioning (yet placeholder!) cockpit has been modeled, again taking whatever information has been retained over the last 88 years of the original cockpit design of the comet. This, tied in with the custom flight model based off of the original 1934 flight test data and modern accounts of her recent and current pilots have resulted in a unique and entertaining aircraft to take to the skies.

The aim of this release is to give as many people the chance to experience the thrills and joys of taking a 1934 endurance racing machine into the skies to test her (lack of) metal! This all being said, i am fully aware that we are only human, and in the end, this is all for entertainment, not record-braking runs. As a result, a basic autopilot has been built in and hidden away on the rear panel to allow those who wish to attempt the 11 hour record breaking flights a little bit of respite from the controls. There is also a 'hidden' comms radio and transponder, however with none modeled, if you wish to make use of these, you will need dedicated hardware unfortunately...

Please be aware that this is a very early release version of a product i fully intend to keep working on in the coming year, and improving upon. As a result, all of the texturing is somewhat rough and ready, and the modelling of the interior cockpit is very basic. Further to this, with a lack of personal funds, i have not been able to start work on a custom sound set for the comet as of yet, and so have included the default C152 sound (this only results in you hearing the port engine however!). Further support to help fix some issues you may occur can be found on TPAeronautics dedicated discord server (link below).

PLEASE BE AWARE: This is built as a SIMULATION of the original 1934 racing comets. I have done my very best as a result to replicate their tendencies, as well as their flaws. It is very well known that these were very tricky aircraft to fly - there's a good reason that there are fewer pilots allowed to fly the remaining airworthy comet than there are many other arguably more historical aircraft! Do not jump in expecting her to be as comfortable and forgiving to take-off, land or complete any other action in. She requires patience and knowledge to handle correctly.
IF you were wanting a simplified more 'arcade' experience, then i suggest you look to install the mod i have produced to download separately which re-writes a number of pieces of the flight and engine models to make it a much more hands-free flying experience. However be aware, this naturally will take away some of the fun of learning such a vintage machine.

Please check before each flight:
Check your CG limits. This should now be fixed as a full-forward CG on the limit, however any changes to fuel contents will affect this. If it is too far forward you WILL nose-over while taxiing.
2. Check your directional gyroscope is set correctly - this changes at the start of every flight, and will drift around 12' every 15 minutes while the engines are on (as per the prototype). Use the compass to your right knee to help set this correctly (takes around 45 seconds to do when you get used to it!)

This pack includes:
when you get used to it!)


This pack includes:

v0.6.3 D.H.88 Comet

Detailed 1934 exterior model

Fully functional 1934 cockpit

Custom flight model including original automatic 2-pitch pneumatic ratier propellers

Custom fuel system which mimics that found in the original 1934 aircraft

Basic autopilot to assist in long-haul flights

4 Historical liveries including: G-ACSP Black magic, G-ACSS Grosvenor house, G-ACSR the 'green' comet and G-ACSR Reine astrid

Togglable pilot models for the interior cockpit (clickspot on seats) 

Manual of Instructions

Performance statistics:
Cruise speed: 191 kts
Cruise altitude: 10,000 ft
Range: 2530 NM
Take-off run: 1350 ft

Please feel free to join the TPAeronautics discord for specific support and updates on the progress of this project!

I hope that you enjoy your flight... and try not to let that CG get out of balance!
~ Shepbur

There are no engine sounds coming from the starboard engine.

Sadly, this is intended for the moment! There are no appropriate sound sets from the base game which really fit the comet short of the 152. The alternative was the Da62 which, while it would give you sound form both engines, sounds completely inappropriate for the type of engine and fuselage you are sitting in! The end goal with the release of a payware comet will be to first and foremost build up the funds to record and produce a custom and accurate sound set for the comet to finally let us hear the roar of her engines.

Fix: If you own the premium or premium deluxe version of MSFS, you can use the Baron G58 sound set which gives you some better sounds and the use of both engines! All you need to do, is copy the file from "asobo-aircraft-baron-g58/SimObjects/Airplanes/Asobo_Baron_G58/sound/Asobo_Baron_G58.PC.PCK" into the equivalent file location for the D.H.88 Comet (don't worry about deleting the existing C152 file!). Once you have done this, open the "sound.xml" file and change <MainPackage Name="Asobo_C152"/> to '<MainPackage Name="Asobo_Baron_G58"/>. Then restart the game and you will have sounds in both your engines!

The gear is not retracting after take-off.

Patience! The gear system is modeled off the original manual gear of the comet. This was a essentially a cable winding around a drum and turning a threaded screw on the gear, the original system took around 14 turns of the hand wheel (located on the front right of the cockpit) to completely raise or lower the gear, and as a result took around 5 minutes to complete. On the plus side, you can keep watch of the turning wheel in the cockpit to check if it's still being raised/ lowered, or alternatively, if when the gear is not fully down and the throttles are both below 10%, the gear warning lamp will illuminate on the top left of the front panel. 

I am unable to stop or brake without the aircraft nosing-over.

This is most likely due to the aircraft's CG being outside the stated limits. The comet was VERY tricky to balance correctly, and it took a lot of work to control the fuel levels in each take to keep her safe to fly. Ensure that you have no more than 80 gallons of fuel in the front tank if your rear tank is empty!

The autopilot is throwing me into a dive every time i turn it on!

The auto pilot is very crude and pretty much un-tested... In addition to this, scrolling the vertical speed up actually makes the aircraft dive, and visa versa... A fix will be coming...for now just take baby-steps away and if she starts diving, kill the auto pilot and try to re-set the vertical speed by cycling it a few times...

Copilot is in the way when you move to the rear seat so you can't see anything!

There is a clickspot on the copilot's seat which enables you to hide/ unhide them to make flying a little more comfortable. Just click on the base of the seat/ crotch and they should disappear!
Exactly the same situation for the pilot too, if you want to pretend to be Amy Johnson on the way to Karachi, just press ctrl+5 to move to the copilot seat, hide the copilot, and press the base of the pilots seat infront and boom! your very own jim will appear for you to lose the maps, and forget his compass bearings!

Pretty empty over here.

  • Version 0.6.3 September 21, 2022

    v.0.6.3 Changelog (SU10 compatible):
    New 'modern' fuel system which better represents the original 1934 fuel system
    Additional fuel tank controls for the new system
    Modified fuel burn to better suit cruise and high-altitude performance figures
    Fix for spawning will full fuel in the front tank causing extreme forward CG and nosing-over
    Cleaner electrical system with new battery which is a little longer lasting, but much slower charging! (you can still charge on 1 engine if you're giving it some juice)
    Swap from Engine Oil Temperature gauges to Engine Oil Pressure gauges as per the 1934 prototype
    Updated manual to make corrections/ additions for the new cockpit layout, fuel system and fuel burns - please read!

  • Version 0.6.2 September 11, 2022

    NOT A MAJOR UPDATE - 0.6.3 will be released after SU10 with hopefully a new and improved fuel system!

    Changed the textures for the gear warning lamp - hopefully it is less likely to flicker white now!
    Increased the size of the illuminated bulbs for the landing and all 3 navigation lights
    Corrected a few errors in the Manual of Instructions
    Added additional instructions for the gear wheel in the Manual of Instructions

  • Version 0.6.1 September 08, 2022

    Corrected engine detonation when engine stress damage enabled in-game.
    Added description in the manual to describe mixture and flame trap control positions
    Corrected labeling of engine starter switches in the manual
    Corrected naming of elevator bias (trim) lever in the manual

  • Launched September 08, 2022

    Initial release of this file just launched. Welcome aboard!