From: Conor on 18 Jun 2008 12:56
In article <186a8453-69e4-4d03-b014-
0f06033b5cbc(a)y21g2000hsf.googlegroups.com>, Hiram says...
> On Jun 18, 3:04 pm, Conor <conor_tur...(a)hotmail.com> wrote:
> > Not as it used to be. May only be split into two now with the second
> > period being no less than 30 minutes.
> I've learnt something new today...
Rules changed last year..think it was March.
I only please one person per day. Today is not your day. Tomorrow isn't
looking good either. - Scott Adams
From: Eeyore on 18 Jun 2008 12:58
> Eeyore says...
> > Conor wrote:
> > >
> > > Shame I've already got more hours in than you have then...
> > Didn't learn much from them obviously.
> Enough to fly
A single piston engine light aircraft. ONLY for non commercial private use. In
VFR (visual flight rules) conditions only I presume too, such as not in cloud
and not night flying.
Sorry, I forgot the night rating earlier too.
From: Eeyore on 18 Jun 2008 12:59
> Eeyore says...
> > > So that's a "Yes Conor, you're right. The aircraft will still fly.
> > Not legally.
> Irrelevent. Still grasping at straws I see.
You fancy ending up in nick or sued to hell ?
From: Eeyore on 18 Jun 2008 13:02
> Eeyore says...
> > So you'll know that ALL an autopilot does is hold speed, course, altitude and
> > stops the plane yawing/rolling (basically maitain attitude).
> I guess you've only used simple ones then.
That's what an "autopilot" does.
If you want more, then you need more than just an "autopilot". And I bet you
haven't a clue what those bits are.
> > How go you propose to get to your destination by holing all the above seconds
> > after take-off.
> Amazingly the ones that are a bit more complicated than the equivalent
> of tying bits of string to the controls will do everything apart from
> taxi the aircraft. I guess the planes you've been in the cockpit of
> were nothing more complicated than a Cessna.
Those complicated ones you're referring to aren't "autopilots".
From: Eeyore on 18 Jun 2008 13:16
> Here's a lesson for you.
Goody, goody I can't wait for this.
> Autopilots in modern complex aircraft are three-axis and generally
> divide a flight into taxi, take-off, ascent, level, descent, approach
> and landing phases. Autopilots exist that automate all of these flight
> phases except the taxiing. An autopilot-controlled landing on a runway
> and controlling the aircraft on rollout (i.e. keeping it on the centre
> of the runway) is known as a CAT IIIb landing or Autoland, available on
> many major airports' runways today, especially at airports subject to
> adverse weather phenomena such as fog. Landing, rollout and taxi
> control to the aircraft parking position is known as CAT IIIc. This is
> not used to date but may be used in the future. Some autopilots
> incorporate automated collision-avoidance; the most popular collision
> avoidance for aircraft is called Traffic Collision Avoidance System
> (TCAS). An autopilot is often an integral component of a Flight
> Management System.
What you described is a grossly simplified 'idiot explanation' of an FMS. NOT an
A flight management system or FMS is a computerized avionics component found on
most commercial and business aircraft to assist pilots in navigation, flight
planning, and aircraft control functions.
It is considered to be composed of three major components: FMC (Flight Management
Computer), AFS (Auto Flight System), and Navigation System including IRS (Inertial
Reference System) and GPS.
EFIS (Electronic Flight Instrument System) is not an FMS component, though it is an
important interface between FMS and pilots.
FMC is taken as the core of FMS, which works as a head of the whole system. Its
primary function is to:
Give out real-time lateral navigation information by showing the route programmed
by the pilots, as well as other pertinent information from the database, such as
standard departure and arrival procedures. This information combined with the
location of the aircraft creates a moving map display.
Calculate performance data and predicted vertical profile. Based on weight of the
aircraft, Cost Index and Cruise Altitude, preferably with predicted wind, FMC
calculate a most fuel efficient vertical path that AFS would follow if AFS is
engaged and both of VNAV and LNAV are engaged.
Auto Flight System
If FMC is taken as the "head" of the system who does the calculation and gives out
command, AFS is the system who accomplishes it. AFS is composed of AFDS
(A/P-Autopilot-F/D-(Flight Director) and A/T(Autothrottle) if the aircraft is
equipped with A/T. It is the one who flies the airplane with one hand on the
control wheel (when A/P is engaged), and the other hand on the throttle (when A/T
is engaged). Only when the mode LNAV and VNAV, or LNAV, or VNAV is engaged, AFS
would totally or partly follow the flight path FMC commands.
The Navigation System is mainly composed of IRS (Inertial Reference System) or AHRS
(Attitude Heading and Reference System) and GPS (Global Positioning System), as
well as existing physical navaids such as VOR-DME. The IRS or AHRS provides raw
information that is crucial to flight, such as attitude and heading. The Navigation
System sends navigation information to the FMC to calculate, to the AFS to control
the aircraft, and to the EFIS system to display.
EFIS, as a display system displays flight information including command from FMC
and real-time information such as attitude, heading, position, planned route and
flight track, etc. It is composed of EADI (Electronic Attitude Display Indicator)
and EHSI (Electronic Horizontal Situation Indicator), or on some aircraft PFD
(Primary Flight Display) and ND (Navigation Display). Either displays lateral or
vertical flight information.
Also see EICAS for most modern aircraft
Engine Indicating and Crew Alerting System (EICAS) is an integrated system used in
modern aircraft to provide aircraft crew with aircraft engines and other systems
instrumentation and crew annunciations.
EICAS typically includes instrumentation of various engine parameters, including
for example RPMs, temperature values, fuel flow and quantity, oil pressure etc.
Typical other aircraft systems monitored by EICAS are for example hydraulic,
pneumatic, electrical, deicing, environmental and control surface systems. As EICAS
has high connectivity, it provides data acquisition and routing.
EICAS is a key function of a Glass cockpit system, which replaces all analog gages
with software-driven electronic displays. Most of the display area is used for
navigation and orientation displays, but one display or a section of a display is
set aside specifically for EICAS.
The Crew Alerting System (CAS) is used in place of the annunciator panel on older
systems. Rather than signaling a system failure by turning on a light behind a
translucent button, failures are shown as a list of messages in a small window near
the other EICAS indications. The CAS system is, in essence, an electronic version
of the Idiot light.
And you would know how to programme and use this safely and effectively EXACTLY HOW
? You won't get off the ground without it.
And and how about a FLIGHT PLAN, NOTAMS and WX ?