Sparrow Hawk 1 Flight charcaristics

[Colin Gibson]

I have my Sparrow Hawk 1 finally flying and my instructor , who normally flys a R.A.F. has remarked about the pitching up when power is applied. He is quite light at 68 kilo which probably enhances the issue.
Watching the aircraft from the ground it appears to fly in a nose up attitude also.
He had it climbing at 1500 ft / min and that looked very steep.
Question :
Has anyone altered the length of the ' Tongue ' that the upper tail bolts onto.
If the top of the tail were to be moved back a degree then I would expect it would flatten out the attitude.
Any comments on this would be very welcome.
Colin

[Coen]

This is normal, i did my training on a Magni and RAF both HTL gyros, both these need back pressure on stick when power is added. This is bacause the prop pushes the nose down with power. The opposite is needed when cutting the power, since nose comes up and forward preesure maintains constant speed.
With the SH none of the above is relevant, because it is LTL in my oppinion, before i started flying mine i researched LTL gyro qualities on the net and found good stuff on oz forum. So when flying SH, power goes with forward stick to counter for nose up, and when cutting power back pressure is needed to counter for the nose dropping. No mods needed this normal for the SH

[C. Beaty]

A stable gyro will behave precisely the same as a FW aircraft. When power is increased without moving the stick, the nose will rise and the aircraft begins a climb while maintaining constant airspeed. When power is decreased, the machine will pitch nose down, maintaining constant airspeed while descending.

That behavior is overcompensated if LTL. If so, an increase in power will result in a reduction of airspeed and a decrease of power will cause an increase of airspeed.

[Steve McGowan]

As Chuck and others have said about adding power,,
also if you have too much trim applied.. or if your horz portion of your tail is not centered on the prop blast as you have said.

Biggest thing ,, what you and your instructor weigh may not be enough for the CG on the rotors to fly straight and level without the proper trim.

If your instructor is an RAF Driver,, he'll find the problem real quick

If it's flyin,, Your 99% there, with 100% to go.

[SARAF]

Hope you are well.

When did you train in a RAF and with who???? Have you fixed up your SH and are you flying it at the moment?

[Greg Mitchell]

Do Sparrow Hawks have and anti servo tab on their Tall Tails?

Does anyone know how much they weigh?

The surface area of the HS and the VS?

Cheers,

Mitch.

[Colin Gibson]

Hope you are well.

When did you train in a RAF and with who???? Have you fixed up your SH and are you flying it at the moment?

It was a while ago now that I did 10 hr training in a RAF.
The Sparrow Hawk is flying and my instructor and Test Pilot have flown off the endurence hours to this date.
I have not flown in it yet
My instructor still has an Issue with the stifness of the rudders and the attack angle of the horizontal stabilizer.
Colin

[Greg Mitchell]

Have my answers....Thanks.

Mitch.

[Colin Gibson]

Greg
The first model Sparrow Hawk got one as one of the upgrades. I expect the all do now.
Colin

[SARAF]

I was revering to Coen 's SH and not yours.

Enjoy the training and fly save.

Regards

SARAF