posted 05-12- 05:26 PM               

OK, so thats the major question, how do I keep both high alt and low alt speeds while decreasing clim rate?
I've worked through the general rules of the HLC settings (gurus will no doubt know them) and also of tweaking the prop elements, gear ratio and so on, and still the best I've got is the correct speeds and high climb rate.

Is there a way to fix this, or is this a trade off and we can't have all 3 correct, if so I'll be leaving the climbrate to high since the major issues with the Mig were handling and speed and not realy about climbrate, meaning, a Mig-3 is meant to be fast at high altitude, slow at low alt, and handles like a pig giving a cow a piggy back ride, thats what I want to show with the FM more than anything, and climbrate comes in last in the importance list for this aircraft, but I would like to have it closer to being right if at all possible, but I wont sacrifice the speeds to get it.

Any help or advice will be very much appreciated

~Nat~

posted 05-13- 11:25 AM               

THe HLC setings in the FM FAQ leave out one important thing. Prop area and aspect ratio.

Althought it mentions adjusting these as an afterthought, I've found prop area to be more effective some times. For a given diameter the width of the blade can drastically alter high speed and climbing chcaractereistics, as well as affect the pitch needed. look at the difference in climb rates of a P-47 with and without a paddle bladed prop. The prop alone added over 400 fpm to the climb rate.

Unfortunately, as you know, adjusting any parameter affects all the others.

Sometimes its worth setting the parameters to a point where the aircraft underperforms equally in all aspects, then bring the performance up gradually in all areas.

posted 05-13- 03:28 PM               

Climb rate is given with the engine operating at 100% power with no WEP or emergency boost applied.

Since most engines in SDOE are rated with the emergency, take off, or WEP HP, here's what you have to do to get the correct climb rate.

This does make a huge difference. The climb rate listed for the TA-152 at war power is 3,300 fpm. With injection it jumps to 4,500 fpm under 10,000 feet.

At 1,000 HP and 2500RPM the Wildcat will climb at 2500 fpm below 10,000 ft, at the takeoff/WEP power rating of 1200HP and 2700RPM it hits over 3000fpm.

Go back to OPS and change the HP & RPM to the normal Max HP/RPM and do your climb test. If it's ok at that point, then go back into OPS after the test and restore the higher ratings.

If you have to make any adjustments, It will mean doing some bouncing back and forth with the HP/RPm ratings as the max speed will be affected too.