2026-244Latest orbital launch: Falcon 9 · Starlink Group 15-16 · Oct 27, 2026 · VandenbergLaunch record →
sci-techmaventhe history of spaceflight, in data
sci-techmaven
Launch logAdvertise
  1. Home
  2. Launches
  3. 1971
  4. 1971-012
// orbital launch

DAPP Block 5A F-3

Thor Burner 2 launch from Vandenberg (United States) on February 17, 1971, carrying 4 payloads. GCAT records the launch as a success.

February 17, 1971 · 03:52 UTCLaunch 1971-012Launch no. 1,181 in the log
RocketThor Burner 2
SpaceportVandenbergpad SLC10W
OutcomeSuccess
Launch agencyADCOM 10ADSUnited States

Flight

Date and time (UTC)
February 17, 1971, 03:52
Launch designation
1971-012
Mission
DAPP Block 5A F-3
Flight name
DAPP 3526
Vehicle flight ID
249/BII-11

Orbit and payload

Initial apogee
833 km
Payload mass to orbit
0.107 t
Payloads
4
GCAT launch code
OS

Payloads

PayloadDesignationOwnerMission typeMassFate
DAPP 35261971-012ANORAD 4953USAF Space and Missile Systems OrganizationMeteorology104 kgIn orbit
S70-4 Drag Sphere1971-012CNORAD 4957Naval Research LabCalibration1 kgReentered (orbital decay) · Oct 17, 1989
S70-4 Drag Sphere1971-012DNORAD 4958Naval Research LabCalibration1 kgReentered (orbital decay) · Sep 20, 1989
S70-4 Drag Sphere1971-012ENORAD 4963Naval Research LabCalibration1 kgReentered (orbital decay) · Jan 7, 1990

Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.