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31st Mar 2021, 08:41
Replies: 72
Views: 15,080
Posted By Thax

My last type was the Agusta Westland (now...

My last type was the Agusta Westland (now Leonardo) A109LUH - wife bought me '109LUH' for my last birthday.
Forum: Rotorheads
12th Jul 2020, 01:05
Replies: 111
Views: 13,246
Posted By Thax

I struggle with much of the 'black magic' that is...

I struggle with much of the 'black magic' that is helicopter aerodynamics, and so attempt to look for the simple answers (which is not to ignore that a lot is occurring behind the scenes). Since the...
Forum: Rotorheads
2nd Feb 2019, 02:54
Replies: 19
Views: 2,891
Posted By Thax

I think some posters have failed to understand...

I think some posters have failed to understand the value (literally and figuratively) of simulation. The Royal New Zealand Air Force conducts basic and advanced helicopter training on the AW109LUH...
Forum: Rotorheads
3rd Aug 2015, 09:54
Replies: 17
Views: 6,506
Posted By Thax

Brain in Crisis


Just recently read your book - very good read. As an A109 driver now I read about your T/R failure with some interest.

As for how the brain works, I regret I can report having landed...
Forum: Rotorheads
29th Jul 2015, 11:10
Replies: 86
Views: 12,799
Posted By Thax

Rejected Helipad Take-off

The other advantage of the rearwards departure is that the rejection profile (forward and down) allows a little additional airspeed (airflow over the disc) which improves performance, while the...
4th Jul 2014, 10:16
Replies: 42
Views: 10,421
Posted By Thax


To paraphrase Field Marshal Viscount Slim of Burma:

Leadership is the combination of obligation, persuasion and example that causes men to do what you want.

Not a bad starter for ten ....
Forum: Rotorheads
18th Feb 2014, 23:50
Replies: 72
Views: 30,873
Posted By Thax

Basic Training on a Twin

Ref Post #9.

Not many organisations (especially those on a budget) would propose spending $3000 per hour on hover training. As noted, the RNZAF has introduced the A109LUH as it's basic and...
Forum: Rotorheads
9th Sep 2013, 09:56
Replies: 29
Views: 8,485
Posted By Thax

4-Axis A109

The A109LUH has a 4-axis AFCS. We use ALTA and IAS for a non-precision approach (along with either HDG or LNAV). The ALTA mode uses VS, which can be trimmed to a desired value, but still provides...
21st Aug 2013, 11:08
Replies: 107
Views: 22,660
Posted By Thax

Captain's Name ...

Many years ago, UH-1H gets airborne from a Southern island and contacts Flight Information to file an abbreviated VFR flight plan for the return to home base.

"Iroquois 3805 airborne .... at 15,...
Forum: Rotorheads
14th Mar 2013, 22:45
Replies: 25
Views: 5,900
Posted By Thax

Conventional Wisdom

The helicopter .... a triumph of engineering over common sense.
Forum: Rotorheads
2nd Feb 2013, 05:33
Replies: 38
Views: 8,008
Posted By Thax

Re Original Question

Gents (and any Ladies hiding out there)

Re Vtoss and Vy, Geoffers has it spot on.

Re the original question (why droop NR during OEI flyaway?), Crab is spot on. The aim of the published Cat-A...
Forum: Rotorheads
6th Jan 2013, 16:19
Replies: 99
Views: 14,408
Posted By Thax

RNZAF Bell 47

Just before the mighty Bell 47 Sioux was retired from 'operational' service in the RNZAF (circa 1986), an attempt was made to reach the promulgated service ceiling (20,000ft). Our AvMed folks...
27th Oct 2012, 02:49
Replies: 646
Views: 136,908
Posted By Thax

Australasian Wit

Very boyish looking trainee pilot nicknamed 'Phoetus' (which stuck throughout his RNZAF career), followed a few years later by an even younger looking pilot who became 'Embryo'.

My last two...
13th Jul 2007, 09:17
Replies: 1,075
Views: 753,454
Posted By Thax

Out of the Mouths of Babes

Circa early 1980's and the FLTCDR on No 14 Sqn RNZAF takes one of his bograts for a bit of 2 v 2 practise in the Mighty BAC167 Strikemaster. Mid-way through the first engagement the FLTCDR...
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