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The Harmon Flying Field launch site is located in Aurora, Portage County, Ohio, at 619 Bartlett Road, about one-third mile southeast of Page Road on the north side of Bartlett Road (41°16'46.5"N, 81°19'7.5"W). The range will be set up to the northeast of the oil and gas well tanks near the center of this 140-acre field. Portions of that acreage are tree-covered, but there is a clear recovery area of about 2500' east-to-west by 1000' north-to-south. There are existing homes across Bartlett Road to the south. In comparison to our other fields, this field is like a smaller version of the old Pioneer Trail field (3000' by 1800'). It is significantly smaller north-to-south than the old Summit County Fairgrounds field, but bigger east-to-west.

Use of this field will be shared with the Flying Aces of Aurora radio control aircraft club, but they will not be flying as a group on dates when we are launching.

Group rocket launching at this field is permitted only on dates scheduled with the City of Aurora Director of Parks and Recreation. MTMA members who hold a current NAR membership may launch on other dates, between 10:00 am and dusk, provided that they coordinate their activities with any members of the Flying Aces of Aurora that may be using the field at that time. Any person not complying with the NAR Model Rocket Safety Code shall be personally liable to the City of Aurora for the result of their actions.

There is no high-power (Class 2 or higher) rocket waiver for this field. Rockets flown shall be limited to NFPA 1122 Model Rocket and FAA Class 1–Model Rocket. According to NFPA 1122, a model rocket weighs no more than 1,500 g with motors installed; is propelled by one or more model rocket motors having an installed total impulse of no more than 320 N-sec; and contains no more than 125 g of propellant weight. A model rocket motor has a total impulse of no greater than 160 N-sec, an average thrust of no greater than 80 N, and a propellant weight of no more than 62.5 g. A model rocket's structural parts, including the body, nose cone, and fins, shall be made of paper, wood, or plastic and shall contain no metal parts (metallic reloadable motor casings are permitted). According to FAR 101.22, Class 1–Model Rocket means an amateur rocket that (1) Uses no more than 125 grams (4.4 ounces) of propellant; (2) Uses a slow-burning propellant; (3) Is made of paper, wood, or breakable plastic; (4) Contains no substantial metal parts; and (5) Weighs no more than 1,500 grams (53 ounces), including the propellant. (This is a combination of the old "Model Rocket" and "Large Model Rocket" designations.)

All rockets to be launched are subject to approval by the Range Safety Officer (RSO) and the Launch Control Officer (LCO). For rockets weighing more than 16 ounces, the RSO will consult the "Waiver Table" from Rocketry Online's Info-Central ( If the predicted maximum altitude of any rocket / motor combination exceeds 1,000 feet in that table, a flight simulation shall be required. Flight simulations may be prepared using RockSim, wRASP, wRASP32, or ALTMARK - Model Rocket Altitude Predictor with an initial Cd of 0.35. A higher Cd will only be accepted if previously verified by altimeter-equipped flights.

Click here to open a new window with interactive directions to the Harmon Flying Field launch site.

Click here to open a new window with a Google map of the vicinity of this launch site.

Click here to view this launch site as a placemark in Google Earth.

Click here to open a new window with a Microsoft Research Maps aerial photo of this launch site.

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Information about this page:
Maintained by: Mark Recktenwald.
Created: July 30, 2008.
Last updated: March 8, 2013.
Portions Copyright ©1997-2013 by Mark Recktenwald.
Portions Copyright ©2000 by Chuck Straka.
Portions Copyright ©1999-2013 by MTMA.