is this a bug or I damaged something?
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I landed at ~170-180kts in a short strip with two full fuel tanks. Hit the brakes as soon as the MLG touched the ground. Upon trying to takeoff again the jet did this in the picture, it geared toward one direction in takeoff! Did one of the brakes malfunction?
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@Alfred HHmm…I kinda wonder if you blew the right tire.
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@Alfred pretty sure you damage the gear…
Breaking from 170kt seems to be pretty rough.
The correct landing is to do “air break” until ~100kt and then you hit the brakes.
maybe your breaks have malfunction or maybe one of your tires have blown up.
Greeting from Brazil
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@Alfred pretty sure ive seen this in 4.35 too. I thought it was a hung brake destroyed by the heat from overuse, but maybe a blown tire from the brake heat?
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See T.O. BMS1F-16CM-1 p144/145
*BMS features accurate brake energy limits based on gross weight, temperature, pressure altitude and
speed. Brakes generate a great deal of heat when used and uncontrolled heat build-up can lead to brake melting, tyre blow-outs, brake hydraulic pressure failure and even landing gear failure.As a consequence it is important in BMS to use the wheel brakes correctly.
Brake heat builds up not only on rejected take-off and landing but also when taxiing. An F-16 with a
low gross weight can start moving and even accelerating in idle power and brakes will be required to
control taxi speed. Heavy use of the brakes when taxiing will increase brake heat energy build up.
A higher gross-weight F-16 will not move on idle power, thus requiring less braking to control taxi
speed.
For comparison a 20000 lbs GW F-16 taxied at 10 knots over 20000 feet will develop around 4.3
million ft-lbs energy needing to be absorbed by the brakes. The yellow caution zone in the brake
energy limit graphic starts at 11.5 million ft-lbs energy. If a rejected take-off follows a heavy braking
taxi, brake problems are likely to happen.It takes about 5 to 9 minutes for the brake energy to build up after braking; that is when problems may
occur. To avoid problems real life taxi procedures should be followed:• Maximum taxi speed: 25 knots & 10 knots in turns
• Do not ride the brakes, allow speed to increase to 25 knots and then slow down moderately to
15 knots, allowing the speed to increase again to 25 knots
• Taxi speed is displayed in the INS UFC (LIST 6) subpage
The way the brakes are used during the landing roll greatly impacts the possibility of brake failure. It is
best to hit the brakes hard for a shorter time than to brake early but longer as your speed will be higher
and the brake will generate more heat energy doing so.Use aerodynamic braking till the nose gear drop down around 90 - 100 knots and then use the brakes
at around 90-80 knots until you reach taxi speed or come to a full stop.
Do not start braking around 110-120 knots; the heat build-up will be much higher.Refer to chapter 3.5.5 Hot brakes for further information about hot brakes.*
there is more in the manual…
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You need aero-braking first when u touch down on a runway. And then, at ~100kts, put the nose gear down and start wheel braking. The hot brake causes blown tyres or makes gear system down
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thank you for the informative replies. I do aero-braking always but wanted to challenge myself by landing successfully on a short strip with some weights on. Aero-braking would bring the speed down to 100 kts after a significant portion of the runway has been covered. It will take some experience to touch down at the tip of the runway at a safe speed. I wish some of these damage effects can be graphically modeled.
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@Alfred
Flat tyres has been modeled. In some cases, the nose gear has been collapsed but i don’t think it is possible in RL. -
@mack97 said in is this a bug or I damaged something?:
@Alfred
Flat tyres has been modeled. In some cases, the nose gear has been collapsed but i don’t think it is possible in RL.graphically? I never noticed
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@Alfred said in is this a bug or I damaged something?:
graphically? I never noticed
Yes, run the runway for a long time in high GW status. You ca n see the symptom . In the hot brake, one of tyres is flat and can’t go straight without rudder
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@mack97 said in is this a bug or I damaged something?:
@Alfred said in is this a bug or I damaged something?:
graphically? I never noticed
Yes, run the runway for a long time in high GW status. You ca n see the symptom . In the hot brake, one of tyres is flat and can’t go straight without rudder
you see this is how the tires look after I hit the runway ~230kts & the brakes hard. The jet went sideways but still the tires look very round
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We don’t really have visual effect on BMS except the gear collapse…
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@Alfred
I remembered that the flat gear had been down because the hud was slightly tilted over here. This could be my wrong memory that tire was slightly buried on the ground. No big animation here.