Tag Archives: direction

Is it possible to fly an rc airplane even if……?

It has only 3 channels…elevator,aileron and throttle control but without a rudder control which turns the aircraft left or right direction.So is it possible to turn rc airplane using only the ailerons and how safe is it to perform (turning) with it?

What is the estimated flight pattern of a typical model rocket?

How long does the fuel burn for in a usual model rocket (let’s say 5-10 oz.)? What is the estimated height? How does wind direction affect results? What is the best recovery route?

Can anyone help me (rc car)?

Can anyone help me with how to build a RC helicopter from my old RC car(or point in the direction of someone that can. I took everything apart. I have the motherboard, engine, and the things that make it turn. The engine is very powerful, so it should be able to lift a good size helicopter.

Pilots: local wind speeds online?

Where can I get a map of local wind speeds and direction online? I want to get detailed maps if I can. This is so I can determine the proper locations to fly various RC planes. I have some that can take no wind, some that need less than 10mph, some that can handle 20mph… so I need accurate speeds that are current. This is in Lakewood, CO and the wind speeds change by the hour. The obvious weather sites don’t seem to have what I need. I checked Weather.com,local news sites and NOAA, and NCAR. All I can get is the readings from Buckley AFB, DIA, and Jeffco Airport, which are all miles from here. Is that as accurate as it can get?
If I’m at the area already I can estimate wind by looking at trees, flags, and whatever, but yeah I’d like to know before I get there… so I can pick whether to fly at this park or the one across town or if it’s best to stay home or whatever…

please help! im so stressed with these 3 problems?

1. A worker pulls a sled with a force of 80 N directed at an angle of 60 degrees above the horizontal over a level distance of 6 m. If a frictional force of 24 N acts on the sled in a direction opposite to that of the worker, what net work is done on the sled?

a. 240 J, b. 216 J, c. 144 J, d. 96 J

2. A model rocket sits on the launch pad until its fuel is ignited, blasting the rocket upward. During the short time of blast-off, as the ignited fuel goes down, the rocket goes up because:

a. momentum is conserved in this process
b. the fuel pushes on the ground
c. air friction pushes on the escaping fuel
d. the downward force of gravity is less than the downward momentum of the fuel

please explain why you believe the answers are what they are just in case yours are different than mine. thanks a lot guys!
3. A 10 g bullet with an initial speed of 100 m/s is fired horizontally into a 90 g wodden block initially at rest on a frictionless horizontal surface. The bullet passes completely through the block and emerges with a final speed of 20 m/s in the horizontal direction. How much mechanical energy is lost in this process?

a. 44.4 J
b. 50 J
c. 26.4 J
d. 20 J

Physics problems, just want to double check my answers?

1. A worker pulls a sled with a force of 80 N directed at an angle of 60 degrees above the horizontal over a level distance of 6 m. If a frictional force of 24 N acts on the sled in a direction opposite to that of the worker, what net work is done on the sled?

a. 240 J, b. 216 J, c. 144 J, d. 96 J

2. A model rocket sits on the launch pad until its fuel is ignited, blasting the rocket upward. During the short time of blast-off, as the ignited fuel goes down, the rocket goes up because:

a. momentum is conserved in this process
b. the fuel pushes on the ground
c. air friction pushes on the escaping fuel
d. the downward force of gravity is less than the downward momentum of the fuel

please explain why you believe the answers are what they are just in case yours are different than mine. thanks a lot guys!
3. A 10 g bullet with an initial speed of 100 m/s is fired horizontally into a 90 g wodden block initially at rest on a frictionless horizontal surface. The bullet passes completely through the block and emerges with a final speed of 20 m/s in the horizontal direction. How much mechanical energy is lost in this process?

a. 44.4 J
b. 50 J
c. 26.4 J
d. 20 J

HELP!? RC radio control plane crystal problems? The transmitter no longer controls the plane?

I used to fly a Parkzone Stryker C radio control airplane. I put the electronics ( receiver, servos, etc.) into a nitro plane and the plane has been flying great for nearly 2 seasons. Last week a gust of wind caused me to have a fairly rough crash landing… i guess thats what i deserve for flying just before a storm. Anyways, I brought the plane home only to find that the transmitter no longer controlled the reciever. The parkzone transmitter has fully charged batteries and is in good shape. The reciever also has fully charged batteries and the servos still jitter like normal when the reciever is turned on. When both the reciever and transmitter are on, however, the transmitter doesn’t control the servos. I can toggle the joysticks all I want and still get no response. Occasionally, however, the servos seem like they are trying to move in the direction that the transmitter is directing them to – they jitter in the direction of directed motion for a few seconds before going dead once again. So based on my tests, i have concluded that both the transmitter and reciever are getting power, and once in a while a weak signal gets through. I was thinking that maybe the hard landing caused the crystals to go bad? Is this a possibility? Any other ideas? any help would be greatly appreciated.