- Primary roles: Airliner, transport
- First flight: Dec. 17, 1935
- Number built: 607 (civil production, 1936-1942)
- Capacity: 21 to 32 passengers or 6,000 lb (2,700kg) cargo
- Wingspan: 95ft 2" (29.0m)
- Length: 64ft 8" (19.7m)
- Height: 16ft 11" (5.16m)
- Max. speed: 230mph (370 km/h)
- Engines: Wright R-1820 Cyclone or Pratt & Whitney R-1830 Twin Wasp
March 2021 winner:
Joshua Crooks, Quality Manager, REB Technologies Inc. (REBTECH), Bedford, Texas
How long have you been in the aerospace business? 10 years
How did you become interested in aircraft? I’ve always liked learning about historical events and items used during World War II. Learning more about the aerospace industry only increased when I took a job at REB Technologies.
What is your favorite aircraft and why? P-51 Mustang. My grandfather flew those in World War II.
Flying S Inc.
Sr. Design Engineering Mgr.
To enter the contest, visit https://www.aerospacemanufacturinganddesign.com/form/namethatplane and fill out the provided entry form. Only completed forms will qualify. A full set of rules is provided.
Have fun, and good luck!
The entry deadline for this issue’s contest is June 30, 2021. Winners will be announced in the August 2021 issue.
Look what Josh won!
Enter today to win your own high-quality desktop aircraft replica!
A question I’ve been asked many times through the years is, “Do you need to have balanced tooling?” Many tool makers advertise balance by design, but does that mean the tooling is balanced? The tool may be balanced by design, but the minute you put a tool in the holder it’s no longer balanced and you have to decide if you’re going to use the tool as it’s assembled or if you must balance the total assembly.
When you look at any toolholder without a tool in it, determine if it looks like it could be a balanced tool. Let’s take an end mill holder for instance. You’ll find that on one side it has two tapped holes where set screws are used to hold an endmill in place. Knowing that you have two drilled and tapped holes on one side and none on the other means this can’t be a balanced tool. Look at the end mill you will use. In many cases it has two flats milled on one side so the set screws can be tightened against them to hold the tool. Looking at this you know the end mill isn’t balanced, therefore the tool assembly isn’t balanced either.
You will find similar instances in all the tooling on your machine. When a tool is out of balance it puts stress on spindle bearings. Throughout time, continued pressure will cause spindle problems and ultimately require premature spindle replacement. Another concern is that unbalanced tooling causes your tooling to reach end of life earlier due to uneven cutting forces. Also, surface finishes are harder to obtain when tooling is out of balance.
Higher spindle rpm and faster running machines require balanced tooling to protect you and your equipment. Safety being the most important issue here in protecting your most valuable assets – your employees. There are many other benefits as we have already discussed: better quality of parts, longer tool life, and longer machine life.
I suggest that you balance all your rotating tooling prior to use. Work with your local providers for balancing tooling assemblies. I’m sure you’ll see the benefits and your returns will far outweigh the cost.
The iSpeed5 is a fully tool changeable, high speed electric spindle system. As a 350W (0.5hp) variable speed system, it is available in 60,000rpm or 80,000rpm max. speeds. The controller can run multiple motor spindles at different parameters and fully integrates with a machine tool CNC control. The system eliminates the need for external motor cords or air lines, allowing for continuous lights-out high-speed machining. The motor spindles connect to the controller through a constant clean stop block. The iSpeed5 delivers less than 1µm TIR. Spindles are available in most CAT, BT, and HSK tapers. NSK America Corp.
CT metrology system
New features have been added to the 225kV microfocus X-ray computed tomography (CT) system, including:
Rotating.Target 2.0: More efficient cooling enables 3x smaller focal spot size for clearer imaging; data quality, image resolution maximized; doubles running time before preventive maintenance is required
Half.Turn CT: Novel method for nearly halving the angle through which a specimen rotates during the X-ray cycle, speeding the process without losing image quality
Motorized focal spot to imager distance (FID) adjustment: No need to increase X-ray power; shorter FID may be selected, giving faster scan times or a higher signal-to-noise ratio when using low-energy X-ray power
Local.Calibration: Allows rapid, repeatable, automated calibration of voxel size at any CT scan position
Auto.Filament Control: Controls X-ray source, doubling lifetime of the filament, lowering cost, increasing system uptime without losing microfocus resolution
Quick.Change plug-and-play filament cups: Easily repeatable process that reduces downtime, eliminates human error
The 130mm double-acting hydraulic vise with high holding forces offers quick clamping and repeatability for improved speed and part tolerance. The vise comes with multiple mounting patterns, jaw options, and easily accessible plumbing and maintenance ports.
Positioning the jaws just outside the workpiece minimizes travel when clamping, and combined with hydraulic workholding speed, reduces clamping and unclamping operations to 1 second. These repeatable operations lead to measurable machine uptime and productivity increases, especially for high-mix, low-volume manufacturers.
Hydraulic pump kits include everything to hook up and control a vise including the compact pump – mounted horizontally or vertically – and a manual or solenoid zero leak valve to control clamping.
LED profile projector
The PJ-Plus series of profile projectors uses LED lighting, provides reliable measurements, and offers stable dimension and angle measurements in harsh environments.
The LED illumination source eliminates the need for a cooling fan in the main unit, decreasing the entry of oil, mist, and dust into the measuring instrument. It also uses a more efficient stepless illumination control instead of the conventional 2-step illumination adjustment system, allowing for lighting levels to be set to suit the surface texture and workpiece color.
Counterbalance support hinge
The CB counterbalance support hinge can be used in tandem with the CB counterbalance hinge, for applications where the counterbalance hinge supports full torque requirements of the panel or lid.
It enables ergonomic lifting and position control when combined with a CB counterbalance hinge by using stored energy to balance the weight distribution of a lid or panel. Hinges are fully adjustable, allowing opening and closing performance to be tailored to the application’s requirements.
With robust, all-aluminum construction, the hinges offer improved corrosion resistance and consistent performance in hot and cold temperatures and increased life cycle, reducing the need for maintenance.
Thommen manufactures displays, air data computers, altimeters, interior lighting, digital clocks, and chronographs for helicopters, fixed-wing aircraft, and unmanned aerial systems (UAS) for new aircraft and the retrofit market.
Preo Aerospace was co-founded by Pete Ring and Kyle Williams. Ring has more than 20 years’ experience in various aerospace leadership roles. Williams is a 15-year industry veteran specializing in building, managing, and growing Part 145 repair stations, MRO facilities, and aftermarket resellers for avionics manufacturers. Both are pilots.
Constant Aviation earns FAA Safety Management System certification
Cleveland, Ohio-based maintenance, repair, and overhaul (MRO) business Constant Aviation’s Safety Management System (SMS) has earned compliance with the Federal Aviation Administration’s (FAA’s) Voluntary SMS Program. Constant Aviation becomes only the fourth MRO among more than 4,500 maintenance organizations nationally and the first independent business jet MRO Part 145 Repair Station to achieve this designation.
SMS has become the global standard for aviation safety programs. While they are optional for MROs, domestic customers and foreign certificate holders increasingly request them.
FAA’s Part 5 SMS program provides aviation organizations with systematic procedures, practices, and policies to manage safety risk through applicant, participant, and conformant levels.
Constant has been operating under these processes for the past year, and in that time, has reduced incident severity and workplace injuries by more than 55%. The company’s incident costs were also reduced more than 200%, for direct savings greater than $250,000.