AeroTech announces availability of N4800T rocket motor

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Home / Archives / News Archive 2002 / AeroTech announces availability of N4800T rocket motor

AeroTech announces availability of N4800T rocket motor

2002 Archived News by AeroTech

Monday, June 17, 2002

LAS VEGAS, Nevada USA -- AeroTech is pleased to announce the availability of the largest certified high-power Reloadable Motor System (RMS™), the RMS-98/18000 N4800T.

Originally developed for the Gates Brothers for use in their Porthos II rocket flown at last year's Black Rock XIII launch, the N4800T will soon be available to the general certified flying public. This motor sets new standards for high-power rocketry with performance and design features never before available.

See the N4800T in action at http://www.gbrocketry.com/blackrock_xiii_october_2001.htm

The N4800T has been tested by the Tripoli Motor Testing (TMT) committee and has been granted Tripoli certification. Technical specifications are as follows:

Hardware designation:	RMS-98/18000
Reload designation:	N4800T
Case diameter:	98mm (3.875”)
Case length:	47.5”
Loaded weight:	33.0 pounds
Propellant weight:	21.1 pounds
Propellant type:	Blue Thunder
Mass fraction:	0.64
Initial thrust:	1,483 pounds
Peak thrust:	1,483 pounds
Total impulse:	4,353 pound-seconds (19,361 N-sec)
Burn time:	4.5 seconds
Specific impulse (delivered):	206.3 seconds

The N4800T uses a single propellant grain with a partial slotted-tube grain geometry bonded directly into a phenolic liner. The grain has a small center perforation for high volumetric efficiency with cruciform slots running approximately 1/3 length of the core on the aft end to boost initial thrust and create a more neutral time-thrust profile. The N4800T produces nearly 1,500 lbs. of thrust at ignition, then gradually regresses until burnout. A head-end "instant-on" ignition system is being researched and is planned for availability as an option late in 2002.

The N4800T is perfect for use in large and heavy rockets flown to moderate altitudes, but can also be used in minimum diameter airframes to achieve extreme altitudes and velocities that were previously unattainable in high-power rocketry.

Because of its special design characteristics, the N4800T will be sold as a complete "factory loaded" assembly shipped in a UN4C wooden crate. After use, the motor hardware is cleaned and returned in its crate to AeroTech for reloading. The N4800T will be available via special order through AeroTech's existing high-power motor distribution network. AeroTech will begin accepting pre-orders immediately in order to plan production at its new Cedar City, Utah motor manufacturing plant. Delivery of motors is scheduled for the fall 2002 flying season. Please contact your favorite Restricted AccessTM dealer for motor and factory reload pricing.

Important Dealer Note: The N4800T is a Restricted Access product which requires that you have a copy of a low explosive dealer license (LEDL) on file with AeroTech before placing an order for this or any Restricted Access product. And all out-of-state sales of Restricted Access products must be to appropriately certified NAR or Tripoli members who possess a valid low explosive user permit (LEUP).

Please visit http://www.aerotech-rocketry.com or contact Mike Martens by calling (702) 641-2301 weekdays from 8-5 pm PST for more information.

The AeroTech website is being updated with this news release, the Tripoli motor certification document, a video of an N4800T static test and a typical time-thrust curve. Performance data can also be found at http://www.thrustcurve.org.