[[Home|🏠]] <span style="color: LightSlateGray">></span> <span class="no-hover">[[Contracts & Vehicles]]</span> <span style="color: LightSlateGray">></span> OSP-4
>[!summary] Orbital Services Program-4 (OSP-4)
>**Customer**: [[U.S. Space Force]]
>**Contract Value**: $986 Million
>**Type**: IDIQ
>**Period**: Orders through **October 2028**
>**Vehicle**: [[Electron]], [[Neutron]]
>
>Orbital Services Program-4 (OSP-4) is [Space Systems Command](https://www.ssc.spaceforce.mil/)’s small-launch contract vehicle under the Rocket Systems Launch Program (RSLP). It lets DoD customers order orbital or sub-orbital launch services for payloads ≥ 400 lb (≈ 181 kg) with a 12-to-24-month launch timeline, and can be accelerated for Tactically Responsive Space (TacRS) missions (like [[VICTUS HAZE]]).
>
[[OSP-4_Starts_Here (2).pdf|🔗 RFP]]
🔗 [GovTribe Link](https://govtribe.com/award/federal-vehicle/orbital-services-program-4)
![[Pasted image 20250803155409.png|300]]
## Activity
### Initial Contract Award - 10 Oct 2019
Rocket Lab’s **Electron** was one of eight vehicles on the original OSP-4 award, making the company eligible to compete for every task order.
### [[STP-S30]] Task Order - 8 Apr 2024
SSC awarded Rocket Lab a **$14.49 M** launch-service task order to fly **[[STP-S30]]** from LC-2 (Wallops, VA). The flight will carry the [DISKSat VLEO demonstrator](https://www.nasa.gov/smallspacecraft/disksat/) and other DoD experiments NET 2026.
### Path to Medium-Class Missions
Rocket Lab has signaled that **Neutron** will be offered on future OSP-4 on-ramps, expanding its coverage to payloads up to ~13 t (reusable).
## Launch-Readiness Timeline
OSP-4 task orders require providers to deliver spacecraft **within 12-24 months** of award; timelines can be compressed further for TacRS needs.
## Awardees & On-Ramps
| Award Phase | Providers Added | Notes |
| -------------------------- | ------------------------------------------------------------------------------------- | -------------------------------------------------------------- |
| **Original (Oct 2019)** | **Rocket Lab**, SpaceX, ULA, Northrop Grumman, Firefly Black, VOX Space, X-Bow, Aevum | Base vendor pool for small-lift launches |
| **1st On-Ramp (Aug 2021)** | ABL Space Systems, Astra, Relativity Space | Added emerging small-launch vehicles (RS1, Rocket 4, Terran 1) |
| **2nd On-Ramp (Jul 2024)** | Blue Origin, Stoke Space | Added medium-class **New Glenn** & **Nova** launchers |
## Selected Task Orders
| Mission | Awardee (Vehicle) | Value | Award Date | Objective |
| --------------- | -------------------------------- | ------------ | ---------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------- |
| **[[STP-S30]]** | 🚀 **Rocket Lab ([[Electron]])** | **$14.49 M** | [08 Apr 2024](https://rocketlabcorp.com/updates/u-s-space-force-awards-rocket-lab-launch-contract-for-space-test-program-stp-s30/) | *[DISKSat](https://www.nasa.gov/smallspacecraft/disksat/)* VLEO demo + experiments |
| STP-S28 | VOX Space (LauncherOne) | $35 M | 10 Apr 2020 | 44 tech-demo cubesats |
| TacRL-2 | Northrop Grumman (Pegasus XL) | - | Jun 2021 | Rapid TacRS demo |
| STP-S29A | Northrop Grumman (Minotaur IV) | $29.9 M | 03 Oct 2022 | ESPA-class sat + cubesats |
## News
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| File | Published |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | -------------- |
| [[News/U.S. Space Force Awards Rocket Lab Launch Contract for Space Test Program (STP)-S30.md\|U.S. Space Force Awards Rocket Lab Launch Contract for Space Test Program (STP)-S30]] | April 08, 2024 |
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