Author Topic: Multi engine ground-taxi yaw question (Read 637 times)

LePaul · « **on:** October 07, 2003, 08:47:54 AM »

Last night I survived a beating in a P-38. I lost the left engine, rudder and my remaining engine was loosing oil. Thanks to the help of some countrymen, they cleared the con and I scooted back to base. As I was landing, I landed long (kept speed up to make the runway) and wound up over running the runway by about 20 ft. Whenever a slowly applied power (right engine), I would immediately rotate to the left. Long story short, despite the brakes working and nose wheel steering, any small application of power to turn around and make the runway just resulted it sitting and spinning.

I wonder how accurate this is?? This was pretty maddening to spin in circles and settle for a ditch rather than landing my kills successfully.

MrLars · « **Reply #1 on:** October 08, 2003, 12:23:06 PM »

Same thing happened to me in an A20 recently. Had a pilot wound and an engine out so I landed perpindicular to the end of the runway...took 3-4 mins to get to the RW and exit. Throttling up enough to move only made the A/C spin in circles even with full rudder and differential braking....was weird.

I finaly went full throttle and went in circles untill the radius of the expanding circle put me on the RW.

nuchpatrick · « **Reply #2 on:** October 08, 2003, 01:17:20 PM »

A-20's you can rotate normally.. you have to dump full flap's, full rudder plus trim. You have to work the throttle a few times and then your rolling normally. It can even take off with full ord and fuel it takes a long roll out but it's funny to do and get off the ground.

The 38's suck when you lose a motor..I would like to see this fixed. As well.

ccvi · « **Reply #3 on:** October 08, 2003, 01:52:58 PM »

the problem with the p38 might be the props spinning outwards.

icemaw · « **Reply #4 on:** October 08, 2003, 05:12:19 PM »

This has been gone over before. Altho I dont have the info myself its my understanding that p38s had castor type front wheels they do not steer.

Karnak · « **Reply #5 on:** October 08, 2003, 08:12:42 PM »

I've had this happen many, many times in both the P-38 and Mosquito.

The only solution that might work is stopping completely and then very slowly advancing the throttle. Try playing with the brakes while you do so.

LePaul · « **Reply #6 on:** October 11, 2003, 12:03:16 AM »

Tried that, Karnak..brakes or no brakes, the plane just yawed/circled around and around

I know these are big engines and have yaw...I mean, have these planes, in real life, lost an engine and been able to land and taxi? I'm certainly not jumping and dancing "i think this is a bug"...because I just dont know. We're talking some mighty big motors, etc...it seems exaggerated to me...I had this happen in a Me262 once as well

Karnak · « **Reply #7 on:** October 11, 2003, 12:22:48 AM »

LePaul,

I agree that it seems wrong. I don't actually have any data on it, but it seems like it is wrong.

Rutilant · « **Reply #8 on:** October 11, 2003, 02:07:21 AM »

A20 can turn around inside a bomber hangar on one engine, almost half of one with brakes and rudder.

Urchin · « **Reply #9 on:** October 12, 2003, 04:09:48 PM »

Don't believe the P-38 had a locking nosewheel, so the nose would want to go in the direction of the torque if you only had one engine.

Ack-Ack · « **Reply #10 on:** October 12, 2003, 06:45:28 PM »

Quote

Originally posted by LePaul
Tried that, Karnak..brakes or no brakes, the plane just yawed/circled around and around

I know these are big engines and have yaw...I mean, have these planes, in real life, lost an engine and been able to land and taxi? I'm certainly not jumping and dancing "i think this is a bug"...because I just dont know. We're talking some mighty big motors, etc...it seems exaggerated to me...I had this happen in a Me262 once as well

From what I've read about the P-38 that was one of the problems with taxiing with one engine.

In AH all you have to do is just advance the throttle enough that you start to move and then use your rudder and wheel brakes to steer you onto the runway. It's easier if you're already still rolling and a little harder to do from a dead stop but it's doable.

ack-ack

OIO · « **Reply #11 on:** October 13, 2003, 05:35:19 PM »

Aye the real life 38 could not taxi on 1 engine either, the nose wheel did not turn, it was locked..and the plane would twist to the dead engine.

Your only hope to 'taxi' a 38 with a dead engine is to keep the 38 above 20mph as you taxi it towards the runway.