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May 2001
News in brief

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The New Laminar MR/MRx

 

The new glider model is already in the market, as many of you might already know, the first competitions have been flown and the first comments have arrived: it is time to do the first review.

First of all I would like to emphasize that the MRx has been developed specifically for competition pilots; therefore I strongly recommend those pilots who are not interested, or for some reason cannot be involved in competition in a serious manner, to buy the MR instead of the MRx.

Both versions (MR/MRx) of the new glider, may feel a little different in flight than the previous models and it may even take some flights getting used to it. This is all perfectly normal.

I have received pretty positive comments on the glider, for instance our American dealer Rich Burton wrote a couple of days ago: "I didn’t think that you guys could impress me with the new glider since I still love my MR2000 so much, but I was wrong."

THE GLIDER

The carbon rod on the trailing edge of the MR/MRx supports 5 battens (4 on the previous model). This, combined with the compensator function of both swivels, allowed us to pass the DHV’s pitch test even with the VG totally off. In addition, the new batten profile gives you a very comfortable feeling in flight, even with quite turbulent conditions.

The variable geometry (VG) has a longer range than the one in the previous models. There are some tips I would like to share with you.

TAKE OFF

Basically, with the VG-off, the twist is quite big meaning that the glider has a good take off behavior (hard to stall).

On the other hand, you could also take off with full VG in zero wind (i.e. gliding contests, Speed Gliding…etc.); in this case, the nose angle must be decreased. With this setting you a shallower twist and, if your nose angle is not low enough, especially in a somewhat flat launch area, you could stall and/or blow your take off.
I suggest you pull the VG a little for take off.

IN FLIGHT

Having the proper trim speed wise is exceptionally important.
With the VG slightly pulled, you should be able to let the speedbar lose (no force applied) and still have a speed just above the stall, pre-stall velocity.

If this is not your case, you must move your CG forward, which means trimming the glider faster. A too slowly trimmed glider gives you slower roll response and, when you thermal, the glider tends to roll into it.

As I said, the MR/MRx has a long VG path. In flight with the VG full off, the roll reaction time is the lowest (very quick response). In strong and narrow thermals where quick glider response, as well as a good behavior in steep turns is needed, this is the proper VG position.
In regular thermals you could pull the VG-on a little, this will increase your climb performance. Only when flying on a very turbulent and bumpy thermal would I say to have the VG full off.

With the VG full on, the performance is the highest as well as the roll reaction time (slow response, quite hard to turn). In turbulent conditions or close to a slope it is and advantage to pull the VG somewhat off, approx. half or ? of the VG path.

LANDING

The stall behavior is better with less twist (more VG). With a little VG-on (approx. ? ) you have a good compromise between good roll reaction time and good stall behavior. I consider this to be a most favorable setting for landing. It is of course, possible to land with the VG full off; but because of the big twist, it is not as easy to stall (when you flare) as when flaring with less twist.

In any case, with a pretty good landing technique it should not be a problem to land the glider with VG-off, either. But the more VG you use, the better stall behavior you will have. For instance, with very calm conditions I often land with full tight VG. When landing in regular conditions I pull between ? and ½ of the VG. Only with very windy and turbulent conditions, in small landing fields, when you definitely need fast response from your glider, do I land without, or almost without VG.

I strongly suggest you do not land with the VG full off, just pulling a little bit will make a big difference!

THE MRX

The MRx enables you to reach very high speeds with VG full on. It is definitely a lot of fun to have your speedbar down to your stomach (or belly, depending on the pilot’s profile, J!) reaching more or less 100 km/h, with light bar pressure, and still knowing it is still possible to go faster.

In very calm conditions you should definitely NOT surpass the 120 km/h. In regular thermal conditions, due to the turbulent air mass and the resulting unsteady G-load variation, it is not advisable to fly so fast. Depending on the turbulence you should stay below 80 or 100 km/h.

If for some reason you are forced to dive down in order to lose height very quickly, then, it’s better to do this with the VG no more than ½ pulled in. This setting gives you a big enough twist to allow you to pull your speedbar down to your knees and not surpass the VNE (turbulent air mass: below 80 or 100 km/h and calm conditions below 120 km/h). Nevertheless, you will be able to reach high sink rates and decrease your altitude quite fast.

To Main Index

 


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The NXT Revealed

After nine years of dominating the competition in International Formula One Air Racing, breaking 16 world speed records, acquiring numerous international awards and having the race plane, Nemesis retired to the Smithsonian National Air and Space Museum; Team Nemesis decided it was time to share some of their secrets.

Presenting NemesisNXT

The design of the NXT is a result of extensive wind tunnel testing, thorough computer modeling, coupled with nine years of experience (and success) of the race plane, Nemesis.

The NXT is a precision handcrafted, high performance kit airplane, built with the highest quality materials. Each NXT receives meticulous attention in every detail.

The NXT is designed for fast, easy assembly

Because of the Perfect Fit Technology™ (PFT) that is incorporated into each kit, the time spent to assemble the NXT is greatly reduced. For every hour that Nemesis Air Racing, Inc. utilizes the PFT, hundreds of hours are saved for the NXT assembler. All components of each kit are handcrafted and keyed with PFT. NXT components are NOT massed produced. Each NXT receives PFT (Perfect Fit Technology) ensuring ease of assembly and fast build times.

Not only is the NXT designed for fast assembly but also for very high performance.

NXT is not for every pilot. But for every pilot who wants the feel of a fighter and jet-like speed, built with the technology of proven success – NXT is handcrafted for you!

And there is even room for an adventurous friend & an overnight night bag!

NemesisNXT kits will be available this summer!

Specifications:

Length 23 feet
Wing Span 24 feet
Wing Area 70 sq. ft
Landing Gear Retractable Mains, Steerable Tail Wheel
Seating two place, staggered side by side
Propeller Hartzell 3 Blade
Engine Teledyne Cont.TSIO 550E
Gross Weight 2200 lbs.
Empty Weight 1200 lbs.
Fuel Capacity 85 + gallons
G Loading 6+, 4-
   

Performance

Sea Level In excess of 350 mph**
At 20,000 feet In excess of 400 mph**


 


OTHER ARTICLES OF ASI MAY 2001 ISSUE

| Editorial | President's Page |
From The Secretary General's Desk | Air Waves |
| News In Brief | Letters To The Editor | World Records |
| Ballooning | Paragliding |
| Hang Gliding | Gliding |



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