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Everything posted by Gavrick

  1. Sorry, but you are wrong. First, there is no "magic mach number" ingame, after that airpalne become "unrecoverable". And at M = 0.75, effects of compressibility begin to be noticeable, and with an increase in M they intensify. But this does not mean that after 0.75 the plane cannot be recover from dive, because this is limit and what the manual says. Further. I checked right now. I tried to recover from steep dive (dive angles 50 ... 80) at mach numbers 0.8, 0.82, 0.84 (altitudes and indicated speeds, respectively ([m] / [kph]) - 3600 / 780, 5900 / 690, 5700 / 715). Fuel - 50%, trim in neutral, throttle closed. In all cases, the aircraft exits from dive with a loss of altitude of about 2-3 kilometers. It should be noted that the loss of altitude is less than what is written in the manual. This is by the way that the leadership is "taken literally." And finally, I hope that in the future the model of the influence of compressibility on the controllability of the aircraft will be fine-tuned.
  2. I accept the argument that the gear door locks should have been fixed in the regiments. At D-15, I think this really should not have been, I will correct it.
  3. Firstly, when you diving at high speed, you should not forget about the effect of compressibility. In this case, it is not speed that matters, but the Mach number. On the left side of cockpit there is a plackard with a speed limit depending on the height. You say that the 485 mph plane is poorly controlled. So, but above 5000 feet it is forbidden speed. One of the effects of compressibility is a drop of aerodynamic control surfaces efficiency. That is why they write that it is useless to use a trimmer - with a large M number, the elevator or aileron itself loses effectiveness. Further. Suppose we have a speed of 485 miles per hour near the ground. At the same time, when 50% of fuel, we can make about 4g, and this is a lot, considering the speed, and the fact that there is no getting away from the “stiffing” of the control - for example, in the same dive report it is stated that the stick force is “relatively” light in dive. And if you reset the trimmer to neutral, it will be 5g near ground at 485 mph. And at 400 miles per hour, we have 8g on the ground level with a trimmer in neutral, and we can get even more if we help with a trimmer - 10+ g. And 400 miles per hour is also pretty much speed... And finally. It should be noted that in the 44th year there was a modification of the control system. A "bobweight" was mounted on the stick. Without its installation, indeed the stick was too light, and at the same time there was a danger of easily exceeding the overload restrictions.
  4. Thank you, friends! To see that people like the result of our work is very great!
  5. Modelsvit Tu-91, 1/72. Work in progress, rebuilding cockpit:
  6. Dive brakes and trimmers on the right side of elevator linked by hydraulic line, an there is no valves in this hydraulic line. And electrical part of dive system - electromagnet and spring in the trimmer control - "blocked" with the bomb drop system, and can be turned off only with it. Do you have any document, mentioned that dive system is can be turned off some kind?
  7. You can not turn off dive system at Ju-87. Control key (LCtrl+D by default) used at Ju-88 and Pe-2. And contact altimeter is not connected with dive system, it is used only for sound warning.
  8. In game you can dive either with and without dive brakes. If you dive without dive brakes, you can engage dive system by press LCtrl+D (same key for recover).
  9. Yes. Trimmer set to "nose heavy". Or retract air brakes (at Ju-87). And... ...trimmer set back to default position, so airplane become "tail heavy" and it is help to recover from dive.
  10. Just release air brakes. And trim aircraft before dive.
  11. In manual mode water radiators can be fully opened or fully closed only.
  12. Thank you! Very interesting and useful.
  13. Please make new topic for "moon conspiracy" and other space things. It is interesting, but offtopic here.
  14. The first flight into space was the first orbital flight. Therefore, Gagarin was both the first man in space and the first in orbit. Flight of A. Shepard (second flight into space) was suborbital.
  15. Yes. In case of P-51 - 100% of fuel - wing tanks and fuselage tank are full. ~68% of fuel - fuselage tank is empty, wing tanks are full.
  16. When you fly below 3000 ft at combat or WEP mode, check throttle lever position and MAP. If you move throttle past take-off stop position, MAP more that 52 inch (or 64 at WEP mode). About critical altitude. From P-47D-28 model specification: Critical altitude is 24500 ft. Ingame - 23000 ft, 5% error. Not best result, but acceptable.
  17. It is good reference. Data from this report correlate well with data from "model specification" at 64 inch MAP (+-10 mph). Also it is corellate well with ingame P-47 at 52 inch MAP (ingame top speed 407 mph at 29500 feet and 410 from report). Probably. Ingame top speed is 700 kph TAS (485 IAS) at 7000m.
  18. In various tests from various references, the weight of the aircraft was mainly about 13,000 pounds. For example, from different references (from wwiiaircraftperformance): NACA stability and control tests of P-47D-30 - gross weight 12810 ... 11870 pounds, P-47D-10 43-75035 - 13244 pounds, P-47D 42-26167 - 13230 pounds, Comparison of P-47D-30, P-47M and P-47N Performance - 12731 pounds.
  19. With 8 guns and 50% fuel in simulator gross weight of P-47 is 13220 lb. It is near to gross weight from model specifications of P-47D-28 - 12958 lb - with 6 guns and 205 gals of fuel. If you chose this variant ingame (205 gals - 55%), you has gross weight 13025 lbs. The difference appears in general due to the fact that in the simulator only one version of the filling with oil (full tank). In reality, dressing with oil could also be partial. But 50% of the fuel and 8 machine guns - just easier to remember and advise to use.
  20. Reference for P-47D-28 top speed: Check top speed at standart atmosphere, +15C temperature and 760 mm.hg pressure AGL. In quick mission - on autumn maps. Airplane - 50% of fuel, 8 guns, standart ammunition. 64 inch MAP, 2700 rpm, auto rich mixture (80% of lever), cowl flaps and oil cooler flaps closed, intercooler flaps - neutral (50%).
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