$48.95 Buy It Now or Best Offer
free,30-Day Returns
Seller Store rchobbyexperts
(73444) 99.3%,
Location: Saint Paul, Minnesota
Ships to: US,
Item: 314613648441
Restocking Fee:No
Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money back or replacement (buyer’s choice)
Unit of Sale:1
Custom Bundle:No
Year Manufactured:2023
MPN:EST9720
Item Length:26.9 in. (68.3 cm)
Bundle Listing:No
Vintage:No
Item Height:26.9 in. (68.3 cm)
Style:Rocket
Unit Quantity:1
Item Width:3 in. (76 mm)
Non-Domestic Product:No
Assembly Status:Unassembled Kit
Color:White/Orange
Scale:26.9 in. (68.3 cm)
Age Level:12-16 Years
Franchise:Estes
Subject:Rocket
Modified Item:No
Estes:Estes
Type:Space Rocket
Year:2023
Customized:No
Skill Level:3 – Intermediate
Baby Bertha:Baby Bertha
Theme:Rockets & Space
Item Weight:10 oz. (283.5 g)
The Ban on Nuclear Testing and the Hardtack SeriesBefore we start, we need to cover the prehistory of Doorknob Model Rocket. During the mid-1950’s, the US and Russian nuclear testing caused public concerns over nuclear fallout to reach a fevered pitch. In response, President Eisenhower announced a ban on further nuclear testing on or before October 31, 1958.US scientists disregarded the ban and conducted the Hardtack Series of tests to collect data on radioactivity effects from both underwater and above-ground detonations. The program consisted of 35 detonations in the Pacific Proving Grounds from April to August 1958.Measuring the Effects of RadioactivityScientists were chiefly concerned about damage to the ozone layer and possible effects of long-range radioactive fallout. To measure the earth’s upper atmosphere, they developed single and two-stage Doorknob rockets. They could capture radioactive data for analysis at altitudes of approximately 50 miles.Early results indicated minimal or no damage to the ozone layer from the nuclear testing. Additionally, it’s possible that water detonations generated enough ozone to compensate for any loss caused by above-ground testing.The Estes 1:5.3 Scale Model DoorknobThe Estes 1:5.3 scale Doorknob model rocket is a big and impressive kit that is both simple to build and fun to fly. It will be a hit in both the sport and scale rocket categories. There are two sets of decals available for those who want to turn this scale model into a sports modelKey points:President Eisenhower announced a ban on further nuclear testing on or before October 31, 1958, due to public concerns over nuclear falloutDespite the ban, US scientists carried out the Hardtack Series of tests from April to August 1958Scientists were concerned about damage to the ozone layer and possible effects of long-range radioactive falloutSingle and two-stage Doorknob rockets were developed to capture radioactive data at altitudes of approximately 50 milesThe Estes 1:5.3 scale model Doorknob is a fun and simple kit to build and fly. Moreover, it has two sets of decals available for customization. Technical SpecificationsRecommended Engines F15-4, F15-6, E16-4w/Engine Adapter : D12-3Launch System Porta-Pad E Projected Max Altitude 1100 ft. (335 m) Recovery System 18 in. (45.7 cm) Parachute Length 26.9 in. (68.3 cm) Diameter 3 in. (76 mm) Weight 10 oz. (283.5 g) Fin Material Laser Cut Wood
Frequently Asked Questions About Estes Doorknob Door Knob Scale Pro Series II Model Rocket Kit EST9720 9720 in My Website
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