Drogue attached to the airframe but somewhere along the main attachment line
is an electric propeller within a double swivel circular shroud (small
enough to fit into the airframe) with a servo to steer it ie. The double
swivel circular shroud is a mechanical link along the main drogue harness
line?
Troy
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On
Behalf Of Ken Biba
Sent: Monday, 11 January 2016 11:01 AM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Flight Controller Features
A few thoughts.
There are some very good and flight proven amateur rocket recovery and
telemetry solutions on the market. Small market and very hard to get market
share. Very tough business.
I have seen about 20 university level GPS guided parachute/paraglide
recovery solutions over last 10 years as part of ARLISS program. None have
made effective progress against the wind even when demonstrating effective
control. Hard problem and avionics not the tough part. Skeptical.
A simple drogue/ballute at apogee with main chute deployment at low altitude
still seems most reliable and proven recovery.
For me small size and power consumption will be important to consider at
all.
K
Ken Biba
Novarum, Inc.
415-577-5496
On Jan 10, 2016, at 8:56 AM, Monroe L. King Jr.<monroe@xxxxxxxxxxxxxxxxxx> wrote:
first.
Would guided parachute recovery be interesting?
Parachutes provide for a rather choppy landing that may not be over
when you have touched down.
( And the payload tends to require carefull packing that comes at
significant cost in weight.)
Yeah I prefer flying back on wings but I am interested in what others
might want.
Dragchutes should work well for energy management.
True but much more is possible today nothing wrong with that to me as
long as you get your rocket back! I don't want to see anymore lost
rockets if we can help it. The telemetry alone should improve that
dramatically.
But for the actual landing something more sophisticated needs to be used.
You require point landing and very low speed final approach.
( Rocket engines are not designed or being dropped asswards on the
ground) We've seen that an active rocket landing works.
I don't think many amateurs would be interested in something that
complex unless they had a throttable and those are few. This
controller could easily do hover and such a return but thats not what
I had in mind here.
This would be something like recovery with no chute using the grid
fins and a retro fire right near the ground say 4 small solids to stop the
decent like the Russian capsule does.
What actually spoke against the Roton solution ?
Which is what?
uwe
Each type of configuration needs a reference frame to build the model
on and each frame needs a proper mixer for attitude control so right
now I'm trying to decide what reference frames and mixers to work on
Since I'm deciding how we do this I might include your idea if it's
doable and cool enough :)
