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Search: Posts Made By: SimFlightTest
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Forum: Rotorheads
2nd Apr 2021, 13:19
Replies: 14
Views: 1,705
Posted By SimFlightTest

Just because a pitot-static system is on a...

Just because a pitot-static system is on a certified aircraft doesn't necessarily imply that it is accurate. It simply implies that it is accurate against what is presented in the RFM. For example,...
Forum: Rotorheads
23rd Dec 2020, 11:31
Replies: 147
Views: 16,653
Posted By SimFlightTest

The primary reason the rotor disk follows the...

The primary reason the rotor disk follows the ship deck is because the swashplate stays aligned to the deck, and the rotor disk follows the swashplate. Disconnect the pitch links and the rotor...
Forum: Rotorheads
18th Dec 2020, 17:18
Replies: 147
Views: 16,653
Posted By SimFlightTest

From a physics standpoint, a "gyro" can be...

From a physics standpoint, a "gyro" can be defined as an object whose effects due to rotational motion dominate the behavior of the object. In this regard, a rotor is a gyro because the effects of...
Forum: Rotorheads
18th Dec 2020, 16:41
Replies: 147
Views: 16,653
Posted By SimFlightTest

Gyros and rotors both obey the same fundamental...

Gyros and rotors both obey the same fundamental laws of physics that perfectly describe their behavior. F=MA applies equally to both. The differences lie in the forces that exist and where they get...
Forum: Rotorheads
18th Dec 2020, 16:24
Replies: 147
Views: 16,653
Posted By SimFlightTest

There are subtle effects that can result in a...

There are subtle effects that can result in a teetering rotor from producing exactly 90 deg phase lag. For example, any of the following will result in a deviation from an exact 90-deg phase lag:
-...
Forum: Rotorheads
18th Dec 2020, 15:15
Replies: 147
Views: 16,653
Posted By SimFlightTest

The reason a gyro precesses at 90 deg while some...

The reason a gyro precesses at 90 deg while some rotors exhibit phase lag less than 90 deg is because rotors with hinge offset (or effective hinge offset) inject an additional moment into the disk...
Forum: Rotorheads
19th Aug 2020, 14:08
Replies: 9
Views: 1,536
Posted By SimFlightTest

You might give flight simulation a consideration....

You might give flight simulation a consideration. You will get to develop and fly the simulators, as well as flight test actual aircraft. It's given me the chance to fly all sorts of aircraft that...
Forum: Rotorheads
20th Feb 2020, 13:53
Replies: 61
Views: 17,253
Posted By SimFlightTest

Being fixed pitch fans, I wonder how the system...

Being fixed pitch fans, I wonder how the system will perform during autorotation where it will have to produce both positive and negative thrust in order to control yaw? I would imagine the negative...
Forum: Rotorheads
15th Jan 2020, 20:10
Replies: 31
Views: 8,904
Posted By SimFlightTest

Does anybody know what autopilot Leonardo stuffed...

Does anybody know what autopilot Leonardo stuffed into the 119 to get it IFR. Is it the old analog SHZ-109A or SP-711?
Forum: Rotorheads
15th Jan 2020, 12:25
Replies: 31
Views: 8,904
Posted By SimFlightTest

The FSTDs are actually part of a separate bid. ...

The FSTDs are actually part of a separate bid. The provider for the training services has yet to be determined.
Forum: Rotorheads
31st Dec 2019, 18:49
Replies: 25
Views: 6,306
Posted By SimFlightTest

An effective simulation flight model is more...

An effective simulation flight model is more about matching pilot workload than it is about matching QTG plots. Unfortunately, the regulatory bodies like the FAA and EASA insist on flight models that...
Forum: Rotorheads
26th Apr 2019, 12:53
Replies: 12
Views: 4,141
Posted By SimFlightTest

NTSB prelimary report: ...

NTSB prelimary report:
https://app.ntsb.gov/pdfgenerator/ReportGeneratorFile.ashx?EventID=20190416X22532&AKey=1&RType=Prelim&IType=FA
Forum: Rotorheads
22nd Apr 2019, 20:07
Replies: 12
Views: 4,141
Posted By SimFlightTest

The aircraft was instrumented for data...

The aircraft was instrumented for data collection, including having an air-data boom, so I'm sure the presence of that equipment was the reason for it being experimental.
Forum: Rotorheads
18th Apr 2019, 14:26
Replies: 12
Views: 4,141
Posted By SimFlightTest

I spent many hours in a heli collecting flight...

I spent many hours in a heli collecting flight test data with Rucie. Great guy and great pilot. Hopefully a cause for the crash can be found.
Forum: Rotorheads
3rd May 2017, 12:58
Replies: 23
Views: 4,849
Posted By SimFlightTest

I've been involved in several flight tests where...

I've been involved in several flight tests where we "pumped" each control axis at various frequencies, and never has there been any appreciable change in the average NR or torque values during or...
Forum: Rotorheads
26th Apr 2017, 18:56
Replies: 62
Views: 23,203
Posted By SimFlightTest

Simulating tail rotor failures (as well as...

Simulating tail rotor failures (as well as fenestron failures) have far fewer unknowns in the low speed regime compared to the cruise environment. In general, such failures are relatively straight...
Forum: Rotorheads
12th May 2016, 15:30
Replies: 50
Views: 11,530
Posted By SimFlightTest

The AS350B3e increases NR based on pedal...

The AS350B3e increases NR based on pedal position. It does it for all altitudes.


The Eurocopter THM for this aircraft indicates that the increase is for "good performance in case of engine...
Forum: Rotorheads
9th May 2016, 12:08
Replies: 74
Views: 31,661
Posted By SimFlightTest

BPOL has their own sims for EC135, EC155, and...

BPOL has their own sims for EC135, EC155, and AS332.
Forum: Rotorheads
11th Apr 2016, 12:51
Replies: 29
Views: 9,891
Posted By SimFlightTest

My understanding is that supplemental S92 data...

My understanding is that supplemental S92 data might have been collected by CAE on some other operator's machine, but the bulk of the data used by CAE comes from the data Frasca collected from BHL's...
Forum: Rotorheads
11th Apr 2016, 12:19
Replies: 29
Views: 9,891
Posted By SimFlightTest

The CAE S92 actually uses Frasca flight test data.

The CAE S92 actually uses Frasca flight test data.
Forum: Rotorheads
2nd Mar 2016, 19:04
Replies: 77
Views: 11,765
Posted By SimFlightTest

Crab, While a heavier aircraft does...

Crab,


While a heavier aircraft does displace more air in a hover than a lighter one, this does not imply a higher downwash speed. The rotor diameter can be increased, hence resulting in more...
Forum: Rotorheads
29th Oct 2015, 18:29
Replies: 538
Views: 65,919
Posted By SimFlightTest

In order for a training organization to...

In order for a training organization to effectively integrate a simulator into their training syllabus, they first need to know the limitations of the simulation. Once they have a handle on that,...
Forum: Rotorheads
29th Oct 2015, 12:51
Replies: 538
Views: 65,919
Posted By SimFlightTest

In my 17 years of experience in the simulation...

In my 17 years of experience in the simulation industry, I have never seen an OEM flight test package that doesn't have MAJOR issues with it as far as simulator development is concerned... and this...
Forum: Rotorheads
27th Oct 2015, 19:57
Replies: 538
Views: 65,919
Posted By SimFlightTest

Any good heli sim will have an underlying physics...

Any good heli sim will have an underlying physics model that gets the device a majority of the way to the correct behavior. The flight test data is then used to confirm correct simulator behavior,...
Forum: Rotorheads
20th Feb 2015, 12:49
Replies: 2
Views: 1,528
Posted By SimFlightTest

The NYPD A119 sim is being replaced by a 429 sim,...

The NYPD A119 sim is being replaced by a 429 sim, rather than being reconfigured... at least the cockpit and IOS portions.
Showing results 1 to 25 of 61
 


 
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