causeitflies

Stan,
If you are landing in the last 300 ft and only need to use the brakes half the time, I think you are doing pretty well at slowing the Flash down. Just work on all the advice given and start moving your touchdown point toward the approach end of the runway.

My home field is about 650ft but there are trees off the approach end that force me to waste half of the runway or more most of the time. Without brakes I would run off the end about 90% of the time. I use full flap (60 deg.?) and a little crow to help to drop it in. I also use high rate on elevator and low rate on aileron for landing.

A good tip was given about seeing the bottom of the wing on the approach. Here are a few more approach and landing pics to help burn that image into memory. The last pic shows a little too much bottom That can happen when you have an insane roll rate and twitch LOL.

causeitflies

Typical Flash landing starting at about 2 min. in this video...
http://www.youtube.com/watch?v=mh1Jbh6uX6k

InboundLZ

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I have 14 hours on my flash now, with 6 flights today. I can tell you that the difference between flight #1 and flight 60ish is day and night. I can land and stop my flash in 400 feet, maybe 300....

The flash will fly very slow, a lot slower than you think. My approach is pattern hight on the down wind with a slightly positive AOA. When turning down wind to base she is really mushing along and I often carry a little throttle to keep her from dropping out...turning base to final I actually force the flash down with some nose down. What I find is it will loose altitude quickly with a little forward stick. Soon as I am lined up and have he fence made I am out of the power, set up a positive AOA and she settles right down nose high touch down. Easy. After the sixty or so flights I have now I would say that looks are deceiving and will fly much slower than you think.

Stay with it, you will get it and if you want to come up on a wednesday or Thursday(to Vegas), we can burn some kero and get it worked out for sure!

tucson

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This has become a very useful thread. I know there are pilots out there that have seen the same problem with slowing down their slippery jets as I have.

Lots of good information here.

Thanks guys

Stan

cfircav8r

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One other thing I have noticed with the vast majority of R/C pilots (even those that fly full scale) is they set the trim for cruise and leave it there for the entire flight. Trim needs adjusted for the different phases of flight, and once you find that best airspeed for approach, trim it for that and it will reduce the workload enough that you can concentrate on adjusting the throttle for the descent rate.

Ruizmilton

My Feedback: (29)

Stan;

I think you are getting excellent pointers here, every now and then I run into the same poblem with mine, the nose high attitute is the trick, on mine I add a bit of power just before the flare, as the model looses a lot of airspeed when you flare, whenever I approach like in the photo below (yes that is my Flash), the landing is perfect.

aquaskiman

My Feedback: (46)

I have over 170 flights on my Flash, a friend told me a little trick and it works on all my jets (Rookie, F-86, Falcon, and the Flash. Get the plane dirty, gear flaps speed brakes just as you would to land. Slow the plane to the speed that you should be going on the down wind leg and add elevator trim tell the plane flys level at that speed. Assuming you have your trims split from then on when you get it dirty and put the flaps in the plane will tell you if your speed is correct. If it climbs you are going to fast, if it sinks you are going to slow. With the Flash that puts it in a little bit of a nose high angle of attack. Fly it around the turn maintain your altitude with throttle and get a near perfect landing every time.

cfircav8r

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The thing to remember is trim is there to maintain airspeed or more correctly AOA. As you change throttle setting you will climb, descend or maintain altitude while maintaining a relatively constant airspeed. If you don't move the elevator when you change throttle the aircraft will raise or lower the nose to maintain airspeed, as long as you have some positive pitch stability. The great thing about jets is this works very well, more so than prop planes.

ddlstang

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Causeitflies :

Could you post some pics of your cockpit. Looks like you detailed out the stock cockpit kit, would like to see more of it.

causeitflies

Stand way off and squint cockpit

sailing1

My Feedback: (134)

Well today I tried another way to slow the Comp Arf Classic Flash down for landing. Just point it into a 40 MPH headwind and I can promise you it will slow down though not as much as you would think. First landing was into only 25 mph or so and I did it without flaps. I was surprized how hard it was to get it to slow down with all the residual thrust from the Cheetah. Not my best landing but any one you can walk away from is a winner on days like this. On the next try the wind had gotten into the 30's with gusts to 40 but was straight down the runway. I know it was a lot of breeze but if you fly in Oklahoma the big boys say you gotta expect this kind of wind from time to time. So on this landing I went right to full flaps (yea, yea I know, or at least found out). Not a good idea at all! Turned final and damn near didn't have enough power to get out of it. Thank goodness the Cheetah has quick spool up because I was way behind the power curve in my piloting abilities. Managed a go around an then went to a much shorter final with half flaps. Much better results this time. Still a handfull but safely on the ground. I had one more chance at even higher wind speed and I probably could have made it just fine. Well, Maybe.

tucson

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Have you tried it into a 40 mile crosswind yet?

Stan

JM-PORTUGAL

If someone use Gyros... where do you put it... each gyros are you using?

JM

InboundLZ

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I have a gyro installed on yaw (rudder). It is a GY401 and I have it set up so it can NEVER get into heading lock mode. It is set up so I can switch it off in flight if needed/desired. I find the gyro to be very effective in gusty crosswind conditions.

InboundLZ

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Some of my flash in St. George... you can see the high alpha attitude.....

JM-PORTUGAL

Hi.

check the landing :-)

[youtube]http://www.youtube.com/watch?v=bj-9gmZBddo[/youtube]

João Matos

Minch

How about this one (only a short bit of video of my Flash), the best one I have done to date, got everything right, including the flight time (you can here the timer countdown on the audio).

check out the link (not worked out how to upload videos yet)

http://www.youtube.com/watch?v=xHVi0zIYawo

Time:00:34 Take Off
Time:00:50 Landing

Regards
Nick

tucson

My Feedback: (1)

The last few posts have had perfect landings.

Also another Beautiful landing Nick.

Now if mine could only start to look like that.

What a great video, lots of great landings and beautiful airplanes.

Thanks,
Stan